Cooperative National Geologic Map: Earth’s surface geology

Joseph P. Colgan, ORCID: 0000-0001-6671-1436 Samuel A. Johnstone, ORCID: 0000-0002-3945-2499 Juan-Marcel Campos, ORCID: 0000-0001-7811-8920 Bryant W. Platt, ORCID: 0000-0001-6389-9015 Jaime A. Hirtz, ORCID: 0000-0002-6701-0137 Nolan C. Barrette, ORCID: 0000-0002-0499-6744 Warren P. Roe, ORCID: 0000-0001-9667-1906 20250601 Cooperative National Geologic Map: Earth’s surface geology vector digital data https://doi.org/10.5066/P146VGVM Samuel A. Johnstone, ORCID: 0000-0002-3945-2499 Joseph P. Colgan, ORCID: 0000-0001-6671-1436 Warren P. Roe, 0000-0001-9667-1906 20250601 A synthesis engine for constructing geologic maps of the United States 1.0 publication U.S. Geological Survey Data Series 1210 https://doi.org/10.3133/dr1210 The USGS National Cooperative Geologic Mapping Program (NCGMP) was directed by Congress to create a new geologic map of the United States” by “bring[ing] together detailed national and continental-resolution 2D and 3D information produced throughout the Survey and by federal and state partners” (House Report 116-100). To fulfill this goal, the NCGMP created a map synthesis engine (Johnstone and others, 2025) based on the Geologic Map Schema (GeMS) standard (NCGMP, 2020) and used it to bring together source geologic maps originally published by the USGS and State Geological Surveys. This thematic map layer was derived from this database using procedures described by Johnstone and others (2025) and is intended to serve as a legible national map of the nation; while it retains full descriptions of geologic units from source materials it does not include the full search functionality (described in Johnstone and others, 2025) that is facilitated by a true relational database. The Earth’s Surface Geology layer depicts geologic units exposed at the earth’s surface over the entire conterminous United States, inclusive of everything from Quaternary glacial deposits to Precambrian crystalline bedrock. In the West and Southeast, the map is a composite of 29 state geologic maps depicting geology at the earth’s surface. In the glaciated region of the Midwest and Northeast, the map is a composite of 21 state geologic maps depicting pre-Quaternary rocks (“bedrock”), 8 state geologic maps depicting Quaternary deposits, and 18 USGS Quaternary Atlas Series maps depicting Quaternary deposits; the Quaternary Atlas maps were used where modern state geologic maps were not available. Quaternary and pre-Quaternary maps were composited by replacing bedrock, residuum, and colluvium (as identified in the GeMS Geomaterials field) on Quaternary maps with the corresponding content from the underlying pre-Quaternary maps (including line and point features). The map is structured as a single GeMS database with three additional tables (also described in Johnstone and others, 2025); a Source_DescriptionOfMapunits table preserves all source inputs, a synthesis_to_source_units table relates aggregated national units to original map units, and a Symbol_Lookup table provides definitions of all FGDC geologic map symbol code values (U.S. Geological Survey, 2006) used for stylizing the map. This data provides a consistent depiction of the geology of the conterminous United States at a national resolution (approximately 1:500,000). It is a compilation of previously published maps. Original maps have not been modified, but additional attribution allows them to be displayed as a more consistent national depiction, while still retaining original unit descriptions. In some instances, only portions of a map have been used to isolate certain thematic features (e.g., Quaternary units). ngs_gems_surface is a composite geodataset that conforms to GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps", available at http://ngmdb.usgs.gov/Info/standards/GeMS/. Metadata records associated with each element within the geodataset contain more detailed descriptions of their purposes, constituent entities, and attributes. An OPEN shapefile versions of the dataset is also available. It consists of shapefiles, DBF files, and delimited text files and retains all information in the native geodatabase, but some programming will likely be necessary to assemble these components into usable formats. These metadata were prepared with the aid of script GeMS_FGDCMetadata.py, version of 2/27/24. 1966 2017 publication date Complete As needed -128.8229 -65.2549 51.6279 22.5573 Conterminous United States USGS Metadata Identifier USGS:67c5f800-d064-42f7-b2fe-d72aa0734c5a None Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. U.S. Geological Survey NGMDB mailing

12201 Sunrise Valley Dr., MS 908

Reston VA 20192 NA ngmdb@usgs.gov Confidence that a feature exists and confidence that a feature is correctly identified are described in per-feature attributes ExistenceConfidence and IdentityConfidence. Data were produced in a relational database with numerous embedded referential integrity and value range checks. Exported data was evaluated for GeMS compliance. Individual entries are considered complete within this data set. Estimated accuracy of horizontal location is given on a per-feature basis by attribute LocationConfidenceMeters. Values are expected to be correct within a factor of 2. A LocationConfidenceMeters value of -9 or -9999 indicates that no value has been assigned. This synthesis of geology was produced by bringing together component geologic maps produced in the Geologic Map Schema (GeMS) into a map synthesis engine as described by: Johnstone, S.A., Colgan, J.P., and Roe, W.P., 2025, A synthesis engine for constructing geologic maps of the United States: U.S. Geological Survey Data Series 2025-1210, https://doi.org/10.3133/dr1210 2025 Vector Albers Conical Equal Area 29.5 45.5 -96.0 23.0 0.0 0.0 coordinate pair 0.6096 0.6096 meters North_American_Datum_1983 GRS 1980 6378137.0 298.257222101 DescriptionOfMapUnits Non-spatial table that captures content of the Description of Map Units (or equivalent List of Map Units and associated pamphlet text) included in a traditional paper geologic map. Has an internal hierarchy expressed by attribute HierarchyKey GeMS OBJECTID Internal feature number ESRI Unrepresentable domain MapUnit Short plain-text identifier of the map unit. Foreign key to DescriptionOfMapUnits table. GeMS Qv Volcanic rocks This Report PZpCm Metamorphic rocks This Report Psm Sedimentary rocks This Report Qpm Peat and muck This Report MZPZu Undifferentiated Mesozoic and Paleozoic rocks This Report Yms Sedimentary and metasedimentary rocks This Report Ymg Mafic intrusive rocks This Report Qg Glacial till, undifferentiated This Report water Water and ice This Report Kse Sedimentary rocks This Report TpCim Igneous and metamorphic rocks of unspecfied age This Report Zg Granitic rocks This Report Xmsq Quartzite This Report MZgr Granitic rocks This Report Xi Igneous and metaigneous rocks This Report Yl Igneous rocks This Report Qai Intermediate alluvial sediment This Report Ti Intrusive rocks This Report Xig Granitic rocks This Report PZpCmg Metaigneous rocks This Report Ql Lacustrine sediment This Report TRs Sedimentary rocks This Report MZim Undifferentiated igneous and metamorphic rocks This Report Ai Intrusive rocks This Report PNsm Sedimentary rocks This Report MZms Sedimentary and metasedimentary rocks This Report PZpCu Undifferentiated Paleozoic to Precambrian rocks This Report Zm Metamorphic and igneous rocks This Report Ds Sedimentary rocks This Report Qls Debris flows, landslides, and other localized mass-movement sediment This Report Pse Sedimentary rocks This Report mTs Sedimentary rocks This Report paTs Sedimentary rocks This Report PNs Sedimentary rocks This Report Dsme Sedimentary rocks This Report Ks Sedimentary rocks This Report Ss Sedimentary rocks This Report PZu Undifferentiated Paleozoic rocks This Report TMZum Ultramafic rocks This Report CAs Sedimentary rocks This Report TMZu Undifferentiated Tertiary and Mesozoic rocks This Report oTs Sedimentary rocks This Report Ksl Sedimentary rocks This Report PZpCg Igneous rocks This Report Qp Playa sediment This Report paTKs Clastic sedimentary rocks This Report scz Shear zone rocks This Report Xms Metasedimentary rocks This Report Qa Alluvial sediment, undifferentiated This Report ngTs Sedimentary rocks This Report Qcsr Carbonate sediment and evaporite This Report Dsl Sedimentary rocks This Report Os Sedimentary rocks This Report Mzgm Mafic intrusive rocks This Report Ymc Marble and calc-silicate rocks This Report Tva Intermediate volcanic rocks This Report Tvs Volcaniclastic rocks This Report Xu Undifferentiated Paleoproterozoic rocks This Report QTv Volcanic rocks This Report Qu Quaternary units, undifferentiated This Report Ymss Clastic sedimentary rocks This Report MZum Ultramafic rocks This Report Ms Sedimentary rocks This Report PZm Undifferentiated metamorphic rocks This Report Qay Young alluvial sediment This Report Qcz Coastal zone sediment This Report Cs Sedimentary rocks This Report PNse Sedimentary rocks This Report PZum Ultramafic rocks This Report TMZs Clastic sedimentary rocks This Report Zms Metasedimentary rocks This Report MZm Metamorphic rocks This Report PPNs Sedimentary rocks This Report CAm Metamorphic rocks This Report TMZg Intrusive rocks This Report Qgo Older glacial till This Report Qic Ice-contact and ice-marginal sediment This Report Tvm Mafic volcanic rocks This Report MZv Volcanic rocks This Report QTs Clastic sediments, undifferentiated This Report Xmss Slate and sandstone This Report Zs Clastic sedimentary rocks This Report Psl Sedimentary rocks This Report Qe Eolian sediment This Report Ygg Granitic rocks This Report pC Undifferentiated Precambrian rocks This Report Aum Ultramafic rocks This Report pgTs Sedimentary rocks This Report eTs Sedimentary rocks This Report plTs Sedimentary rocks This Report Js Sedimentary rocks This Report Au Undifferentiated Archean rocks This Report Xif Iron formation This Report Aig Granitic rocks This Report PZi Paleozoic igneous and metaigneous rocks This Report PRu Undifferentiated Proterozoic rocks This Report Xim Gabbro and mafic lava flows This Report CAZms Metasedimentary rocks This Report Qm Marine sediment This Report Ps Sedimentary rocks This Report Tvr Felsic volcanic rocks This Report Qs Clastic sediments, undifferentiated This Report af Artificial fill This Report PNsl Sedimentary rocks This Report unmapped Unmapped areas This Report Tu Tertiary rocks This Report Tvi Extrusive igneous rocks This Report Oes Sedimentary rocks This Report Ams Metasedimentary rocks This Report PZpCms Metasedimentary rocks This Report Zmg Metaigneous rocks This Report PZms Sedimentary and metasedimentary rocks This Report Olms Sedimentary rocks This Report PRum Ultramafic rocks This Report Yu Undifferentiated Mesoproterozoic rocks This Report Qico Older ice-contact and ice-marginal sediment This Report Ts Sedimentary rocks This Report MZvs Volcaniclastic rocks This Report PZpCum Ultramafic rocks This Report Qao Old alluvial sediment This Report Aif Iron formation This Report Name Name of map unit, as shown in boldface in traditional DMU, e.g., "Shnabkaib Member". Identifies unit within its hierarchical context. GeMS Unrepresentable domain FullName Name of map unit including identification of containing higher rank unit(s), e.g., "Shnabkaib Member of Moenkopi Formation". GeMS Unrepresentable domain Age Age of map unit as shown in Description of Map Units. Examples of values are "late Holocene", "Pliocene and Miocene", "Lower Cretaceous". GeMS Unrepresentable domain Description Free-format text description of map unit. Commonly structured according to one or more accepted traditions (e.g., lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints) and terse. GeMS Unrepresentable domain HierarchyKey String that records hierarchical structure. Has form nn-nn-nn, nnn-nnn, or similar. Numeric, left-padded with zeros, dash-delimited. Each HierarchyKey fragment of each row MUST be the same length to allow text-based sorting of table entries. GeMS Unrepresentable domain ParagraphStyle Token that identifies formatting of paragraph(s) within traditional Description of Map Units that correspond to this table entry. GeMS DMUHeading2 Heading style for second-order headings within Description of Map Units table. Such headings are subsidiary to the primary heading "Description of Map Units". Times New Roman, bold, 10 pt, 12 pt leading, all caps, centered, 12 pt space before. USGS Science Publishing Network DMUHeading3 Heading style for third-order headings within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, all caps, centered, 10 pt space before USGS Science Publishing Network DMUUnit2 Paragraph style for description of a second-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, -10 pt 1st line indent, 3 pt space before USGS Science Publishing Network DMUUnit3 Paragraph style for description of a second-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, 0 pt 1st line indent, 9 pt space before USGS Science Publishing Network DMUUnit1 Paragraph style for description of a first-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, -20 pt 1st line indent, 3 pt space before. USGS Science Publishing Network DMUHeading4 Heading style for fourth-order headings within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, centered, 8 pt space before USGS Science Publishing Network Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain AreaFillRGB {Red, Green, Blue} tuples that specify the suggested color (e.g., "255,255,255", "124,005,255") of area fill for symbolizing MapUnit. Each color value is an integer between 0 and 255, values are zero-padded to a length of 3 digits, and values are separated by commas with no space: NNN,NNN,NNN. GeMS Unrepresentable domain AreaFillPatternDescription Text description (e.g., "random small red dashes") provided as a convenience for users who must recreate symbolization. GeMS Unrepresentable domain DescriptionSourceID Source of map-unit description; foreign key to table Datasources. GeMS vocab1 This Report This report GeoMaterial Categorization of map unit based on lithologic and genetic character, term selected from NGMDB standard term list defined in Appendix A of GeMS documentation, available at http://ngmdb.usgs.gov/Info/standards/GeMS.. GeMS Water or ice Water or ice GeMS Sedimentary and extrusive igneous material Either (1) sedimentary rock and (or) unconsolidated material (sediment) and extrusive igneous material (volcanic rock and [or] sediment) or (2) volcanic rock and (or) sediment and such material after erosion and redeposition. GeMS Ice-contact and ice-marginal sediment Mostly sand-, silt-, and gravel-sized particles or clasts derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Eolian sediment Silt- and sand-sized sediment, deposited by wind. GeMS Felsic-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano or caldera. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Because of their high-silica content and resulting high viscosity, parental magmas tend to erupt explosively. Includes rhyolite, dacite, trachyte, latite; rocks are commonly light-colored. GeMS Other materials Other materials GeMS Coastal zone sediment Mud and sand, with lesser amounts of gravel, deposited on beaches, on barrier islands, or in nearshore-marine, deltaic, or various low-energy shoreline (mud flat, tidal flat, sabka, algal flat) environments. GeMS Mostly carbonate rock Mostly carbonate rock, interbedded with other sedimentary rock types. GeMS Metaigneous rock Rock derived from preexisting igneous rocks and altered by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Coarse-grained intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. GeMS Clastic sediment Sediment formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Metasedimentary rock Rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Glacial till Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. GeMS Quartzite Rock derived from preexisting quartz-rich sedimentary rocks (commonly sandstone) and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Intrusive igneous rock Rock that solidified from molten or partly molten material (magma) below Earths surface. GeMS Slate and phyllite, of sedimentary-rock origin Fine-grained rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Includes phyllite and slate (compact, fine-grained rock that possesses strong cleavage and, hence, can be split into slabs and thin plates). Mostly formed from fine-grained material such as mudstone. GeMS Carbonate sediment Sediment formed by biotic or abiotic precipitation from aqueous solution of carbonates of calcium, magnesium, or iron (for example, limestone, dolomite). GeMS Meta-carbonate rock Rock derived from preexisting carbonate sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Characterized by recrystallization of carbonate minerals in source rock. Includes marble (for which preexisting rock was dominantly limestone or other rock composed of calcite), dolomitic marble, meta-dolostone, and meta-dolomite (for which preexisting rock contained appreciable amount of magnesium). GeMS Peat and muck Unconsolidated material, principally composed of plant remains, with lesser amounts of fine-grained clastic sediment. Deposited in water-saturated environment such as swamp, marsh, or bog. With lithification, such material becomes coal. GeMS Metamorphic rock Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Igneous and metamorphic rock Consists of coarse-grained intrusive igneous rock and generally medium- to high-grade metamorphic rock. GeMS Mafic-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Low-silica parental magmas have low viscosity and tend to form extensive sheets that have generally low relief. Includes basaltic shield volcanoes, which may become very large (for example, in Hawaii). Composed of fine-grained, dark rocks, including basaltic. GeMS Sedimentary material An aggregation of particles deposited by gravity, air, water, or ice, or as accumulated by other natural agents operating at Earths surface such as chemical precipitation or secretion by organisms. May include unconsolidated material (sediment) and (or) sedimentary rock. Does not include sedimentary material directly deposited as a result of volcanic activity. GeMS Meta-ultramafic rock Rock derived from preexisting ultramafic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of magnesium-bearing minerals (for example, serpentine, talc, magnesite). GeMS Debris flows, landslides, and other localized mass-movement sediment Sediment formed by relatively localized, downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. Speed of downslope transport ranges from rapid to imperceptible. GeMS Coarse-grained, mafic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of feldspar and dark-colored minerals. Includes gabbroic rock. GeMS Clastic sedimentary rock Sedimentary rock, composed predominantly of particles or clasts derived by erosion, weathering, or mass-wasting of preexisting rock and deposited by gravity, air, water, or ice. GeMS Medium and high-grade regional metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to relatively intense regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. Includes amphibolite, granulite, schist, and gneiss. GeMS Alluvial sediment Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Grain size varies from clay to gravel. GeMS Coarse-grained, felsic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of light-colored minerals (for example, feldspar, quartz). Includes granitic, syenitic, and monzonitic rock. GeMS Deformation-related metamorphic rock Rock derived from preexisting rocks by essentially solid-state mineralogical, chemical, or structural changes in response to strong deformation, commonly in association with marked changes in temperature, pressure, and (or) chemical environment. Generally forms in narrow, planar zones of local deformation (for example, along faults); characterized by foliation or alignment of mineral grains. Includes mylonite and cataclasite. GeMS Iron-rich sedimentary rock Sedimentary rock, in which at least half (by volume) of observed minerals are iron bearing (hematite, magnetite, limonite group minerals, siderite, iron sulfides). GeMS Lacustrine sediment Mostly well-sorted and well-bedded material that ranges in grain size from clay to gravel, deposited in perennial to intermittent lakes. Much of sediment is derived from material eroded and transported by streams. Includes deposits of lake-marginal beaches and deltas. GeMS Marine sediment Mud and sand, deposited in various marine environments. May originate from erosion of rocks and sediment or may be derived from marine organisms (of carbonate or siliceous composition). GeMS Ultramafic intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed almost entirely of mafic minerals (for example, hypersthene, augite, olivine). GeMS Sandstone and mudstone Sandstone and mudstone (including shale and siltstone), in approximately equal (or unspecified) proportions. GeMS Intermediate-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Parental magma commonly erupts from stratovolcanoes as thick lava flows. Includes rocks that are, in color and in mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Sedimentary rock Consolidated material (rock) composed of particles transported and deposited by gravity, air, water, or ice, or accumulated by other natural agents operating at Earths surface, such as chemical precipitation or secretion by organisms. Does not here include sedimentary material directly deposited as result of volcanic activity. GeMS "Made" or human-engineered land Modern, unconsolidated material known to have human-related origin. GeMS Playa sediment Fine-grained clastic sediment and evaporitic salts, deposited in ephemeral lakes in centers of undrained basins. Includes material deposited in playas, mud flats, salt flats, and adjacent saline marshes. Generally interbedded with eolian sand and with lacustrine sediment deposited during wetter climatic periods; commonly intertongues upslope with sediment deposited by alluvial fans. GeMS Igneous rock Rock and fragmental material that solidified from molten or partly molten material (magma). GeMS Unmapped area Unmapped area GeMS Mostly sandstone Mostly sandstone, interbedded with other sedimentary rocks that locally may include conglomerate and finer grained clastic rocks (mudstone), carbonates, and (or) coal. GeMS Extrusive igneous material Molten material that was erupted onto Earths surface, fusing into rock or remaining as unconsolidated particles. Includes pyroclastic flows, air-fall tephra, lava flows, and volcanic mass flows. GeMS GeoMaterialConfidence Describes appropriateness of GeoMaterial term for describing the map unit. GeMS Low The overall lithology of this map unit is not adequately classifiable using this list of terms and definitions, but the term selected is the best available. Or this map unit is insufficiently known to confidently assign a GeoMaterial term. GeMS documentation High The term and definition adequately characterize the overall lithologic nature of rocks and sediments in the map unit. Regarding the subjective term "adequately characterize", we refer to context and objectives of this classification as described in the GeMS documentation. GeMS documentation Medium The term and definition generally characterize the overall lithology of the map unit, but there are one or more significant minor lithologies that are not adequately described by the selected term. GeMS documentation DescriptionOfMapUnits_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. DataSources Non-spatial table of sources of all spatial features, sources of some attributes of spatial features, and sources of some attributes of non-spatial table entries. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Source Plain-text short description that identifies the data source. GeMS Unrepresentable domain Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. URL Universal Resource Locator (URL) or Document Object Identifier (DOI), identifies a document on the World Wide Web. GeMS Unrepresentable domain DataSources_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. Glossary Non-spatial table that, for certain fields (including all Type fields, Confidence fields, and GeneralLithology), lists the terms that populate these fields, term definitions, and sources for definitions. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Term Plain-language word for a concept. Values must be unique within database as a whole. GeMS Unrepresentable domain Definition Plain-language definition. GeMS Unrepresentable domain DefinitionSourceID Source of definition; foreign key to DataSources. GeMS vocab2 Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. This report vocab10 USGS Science Publishing Network This report vocab4 Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. This report vocab3 U.S. Geological Survey, 2020, GeMS (Geologic Map Schema)--A Standard Format for the Digital Publication of Geologic Maps: U.S. Geological Survey Techniques and Methods 11-B10. This report vocab1 This Report This report Glossary_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. Source_DescriptionOfMapUnits Description of map units for "source" map units, those used in primary map publications used in the compilation. Source_MapUnit values are prefixed with a MapSourceID value to differentiate identically-named source map units from different source maps. Otherwise conceptually equivalent to the GeMS "DescriptionOfMapUnits" table. This Report OBJECTID Internal feature number ESRI Unrepresentable domain Source_MapUnit Short, easily understood ASCII-character identifier for the source map unit. Prefixed with a MapSourceID value (from Source_DescriptionOfMapUnits) to differentiate identically-named source map units from different source maps. Otherwise conceptually equivalent to the "MapUnit" field in the GeMS "DescriptionOfMapUnits" table. This Report Unrepresentable domain Name Name of map unit, as shown in boldface in traditional DMU, e.g., "Shnabkaib Member". Identifies unit within its hierarchical context. GeMS Unrepresentable domain FullName Name of map unit including identification of containing higher rank unit(s), e.g., "Shnabkaib Member of Moenkopi Formation". GeMS Unrepresentable domain Age Age of map unit as shown in Description of Map Units. Examples of values are "late Holocene", "Pliocene and Miocene", "Lower Cretaceous". GeMS Unrepresentable domain Description Free-format text description of map unit. Commonly structured according to one or more accepted traditions (e.g., lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints) and terse. GeMS Unrepresentable domain HierarchyKey String that records hierarchical structure. Has form nn-nn-nn, nnn-nnn, or similar. Numeric, left-padded with zeros, dash-delimited. Each HierarchyKey fragment of each row MUST be the same length to allow text-based sorting of table entries. GeMS Unrepresentable domain ParagraphStyle Token that identifies formatting of paragraph(s) within traditional Description of Map Units that correspond to this table entry. GeMS DMUHeading2 Heading style for second-order headings within Description of Map Units table. Such headings are subsidiary to the primary heading "Description of Map Units". Times New Roman, bold, 10 pt, 12 pt leading, all caps, centered, 12 pt space before. USGS Science Publishing Network DMUHeading5 Heading style for fifth-order headings within Description of Map Units table. Times New Roman, Italic, 10 pt, 12 pt leading, centered, 6 pt space before USGS Science Publishing Network DMUHeading3 Heading style for third-order headings within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, all caps, centered, 10 pt space before USGS Science Publishing Network DMUUnit2 Paragraph style for description of a second-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, -10 pt 1st line indent, 3 pt space before USGS Science Publishing Network DMUUnit3 Paragraph style for description of a second-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, 0 pt 1st line indent, 9 pt space before USGS Science Publishing Network DMUUnit1 Paragraph style for description of a first-order map unit within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, -20 pt 1st line indent, 3 pt space before. USGS Science Publishing Network DMUHeading4 Heading style for fourth-order headings within Description of Map Units table. Times New Roman, Regular, 10 pt, 12 pt leading, centered, 8 pt space before USGS Science Publishing Network Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain AreaFillRGB {Red, Green, Blue} tuples that specify the suggested color (e.g., "255,255,255", "124,005,255") of area fill for symbolizing MapUnit. Each color value is an integer between 0 and 255, values are zero-padded to a length of 3 digits, and values are separated by commas with no space: NNN,NNN,NNN. GeMS Unrepresentable domain AreaFillPatternDescription Text description (e.g., "random small red dashes") provided as a convenience for users who must recreate symbolization. GeMS Unrepresentable domain DescriptionSourceID Source of map-unit description; foreign key to table Datasources. GeMS 674 Mudrey Jr., M.G., Brown, B.A., Greenberg, J.K., 1982, Bedrock Geologic Map of Wisconsin: Wisconsin Geological and Natural History Survey Map M-078, scale 1:1,000,000. This report 1340 Fullerton, D.S., Cowan, W.R., Savon, W.D., Goldthwait, R.P., Ferrand, W.R., Muller, E.H., Bahling, R.E., and Stravers, J.A., compilers; Fullerton, D.S., and Richmond, G.M., eds.; 1991, Quaternary Geologic Map of the Lake Erie 4° x 6° Quadrangle, United States and Canada, U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-17), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-17/ This report 879 Spoljaric, N. and Jordan, R.R., 1966, Generalized geologic map of Delaware: Delaware Geological Survey, Special Publication 4, scale 1:297,500. This report 602 Dalton, Richard F., Monteverde, Donald H., Sugarman, Peter J., and Volkert, Richard A., compilers. Bedrock Geologic Map of New Jersey 2014. New Jersey Geological and Water Survey. 2014, Scale 1:250,000, 5 cross-sections. This report 838 New Mexico Bureau of Geology and Mineral Resources, 2003, Geologic map of New Mexico: New Mexico Bureau of Geology and Mineral Resources Geologic Map, scale 1:500,000 This report 1414 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Southern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 921 Caldwell, D.H., Erwin, R.B., and Woodward, H.P., 1968, Geologic Map of West Virginia: West Virginia Geological and Economic Survey Map 1, scale 1:250,000. This report 856 Heran, W.D., Green, G.N., and Stoeser, D.B., A digital geologic map database for Oklahoma: U.S. Geological Survey Open-File Report 03-247, scale 1:250,000. This report 929 Clayton, L., Moran, S.R., Bluemle, J.P., and Carlson, C.G., 1980, Geologic map of North Dakota: U.S. Geological Survey, scale 1:500,000 This report 591 Burchett, R.R., 1986, Geologic bedrock map of Nebraska: Nebraska Conservation and Survey Division Geologic Maps and Charts 1, scale 1:1000,000 This report 1309 Gray, H.H., 1989, Quaternary geologic map of Indiana: Indiana Geological Survey, Miscellaneous Map 49, scale 1:500,000 This report 652 Horton, J.W., Jr., and Dicken, C.L., 2000, Preliminary geologic map of the Appalachian Piedmont and Blue Ridge, South Carolina segment: U.S. Geological Survey Open-File Report 01-298, scale 1:500,000 This report 1020 Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., 2000, Geologic Map of Arizona: Arizona Geological Survey, Map 35, scale 1:1,000,000. This report 970 Milstein, R.L. compiler, 1987, Bedrock geology of southern Michigan: Michigan Department of Natural Resources Geological Publication BG-01, scale 1:500,000. This report 1102 Hardeman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic Map of Tennessee: Tennessee Division of Geology State Geologic Map, scale 1:250,000 This report 577 Thompson, Thomas L., 1995, The stratigraphic succession in Missouri (revised); Missouri Geological Survey, Volume 40-revised, 2nd series, 189 p., 42 figs., 1 tbl. | Thompson, T.L., 1970, Lower Pennsylvanian conodonts from McDonald County, Missouri; Journal of Paleontology, v. 44, p. 1041-1048, pl. 139. This report 1288 Surficial Geology Material Explanation This report 1115 Texas Water Science Center, 2015, Geologic database of Texas This report 1233 Miller, R.A., Maher, S.W., Copeland, Jr., C.W., Rheams, K.F., Neathery, T.L., Gilliland, W.A., Friddell, M.S., Van Nostrand, A.K., Wheeler, W.H., Holbrook, D.F., and Bush, W.V., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1988, Quaternary geologic map of the Lookout Mountain 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NI-16), scale 1:1,000,000 [Bush, C.A., Digital edition, 2013], https://pubs.usgs.gov/imap/i-1420/ni-16/ This report 1411 This Report This report 644 Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., Skehan, J.W., and Mosher, S., 1994, Bedrock geologic map of Rhode Island: Rhode Island Geological Survey Rhode Island Map Series Map 1, scale 1:100,000. This report 946 Osberg, P.H., Hussey, A.M. and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Geologic Map Series BGMM, scale 1:500,000. This report 1306 Minnesota Geologic Survey, D-01 database of Surficial Geology Of Minnesota, https://mngs-umn.opendata.arcgis.com/apps/UMN::d-01-surficial-geology-of-minnesota/about, accessed November 1st, 2023 This report 935 Gray, H.H., Ault, C.H., and Keller, S.J., 1987, Bedrock geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 48, scale 1:500,000 This report 1141 Gadd, N.R., Veillete, J.J., Fullerton, D.S., Wagner, P.W., and Chapman, W.F., compilers; Fullerton, D.S., ed., 1993, Quaternary Geologic Map of the Ottawa 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-18), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-18/ This report 1346 Borns, H.W., Gadd, N.R., LaSalle, Pierre, Martineau, Ghismond, Chauvin, Luc, Fullerton, D.S., Fulton, R.J., Chapman, W.F., Wagner, W.P., and Grant, D.R., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1987, Quaternary Geologic Map of the Quebec 4°x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-19/ This report 1388 Gray, H.H., Bleuer, N.K., Lineback, J.A., Swadley, W.C., Richmond, G.M., Miller, R.A., Goldthwait, R.P., and Ward, R.A. compilers; Richmond, G.M., Fullerton, D.S., and Bush, C.A., eds., 1991, Quaternary geologic map of the Louisville 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-16), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-16/ This report 1382 Cleaves, E.T., Glaser, J.D., Howard, A.D., Johnson, G.H., Wheeler, W.H., Sevon, W.D., Sheldon, J., Owens, J.P., Peebles, P.C., compilers; Richmond, G.M., and Fullerton, D.S., Weide, D.L., eds., 1987, Quaternary geologic map of the Chesapeake Bay 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-18), [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nj-18/ This report 1221 Whitfield, J.W., Ward, R.A., Denne, J.E., Holbrook, D.F., Bush, W.V., Lineback, J.A., Luza, K.V., Jensen, K.M., and Fishman, W.D., compilers, Richmond, G.M. and Weide, D.L., eds., 1994, Quaternary geologic map of the Ozark Plateau 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-15), scale 1:1,000,000 [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-15/ This report 580 Wagner, Richard E. and Kisvarsanyi, Eva B., 1969, Lapilli tuffs and associated pyroclastic sediments in Upper Cambrian strata along Dent Branch, Washington County, Missouri; Missouri Geological Survey, Report of Investigations 43, RI-043, vi+80 p., 2 pls., 27 figs. This report 1166 Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, scale 1:500,000. This report 1302 Lusardi, Barbara A; Gowan, Angela S; McDonald, Jennifer M; Marshall, Katherine J; Meyer, Gary N; Wagner, Kaleb G. (2019). S-23 Geologic Map of Minnesota - Quaternary Geology. Minnesota Geological Survey. Scale 1:500,000. This report 1091 Thompson, D.E., 2011, Geologic Map of Mississippi; after Bickler, A.R., 1969, Geologic Map of Mississippi: Mississippi Department of Environmental Quality, Office of Geology, scale 1:500,000. This report 1066 Zeller, D.E., ed., 1968, The Stratigraphic Succession in Kansas, with contributions by J.M. Jewett, C.K. Bayne, E.D. Goebel, H.G. O'Connor, A. Swineford, and D.E. Zeller: Kansas Geological Survey Bulletin 189 This report 1408 Walker, G.W., and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000 This report 1055 Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic map of Georgia: Georgia Geological Survey, scale 1:500,000 This report 1128 Howard, A.D., Behling, R.E., Wheeler, W.H., Daniels, R.B., Swadley, W.C., Goldthwait, R.P., Fullerton, D.S., Sevon, W.D., Miller, R.A., compilers; Richmond, G.M., Fullerton, D.S., Christiansen, A.C., eds., 1991, Quaternary geologic map of the Blue Ridge 4° x 6° quadrangle, United States: Quaternary Geologic Atlas of the United States Map I-1420 (NJ-17), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-17/ This report 1304 This Report This report 1031 McFarland, J.D., 1998 (revised 2004), Stratigraphic summary of Arkansas: Arkansas Geological Survey Circular 36, 38 p. This report 1185 Hallberg, G.R., Lineback, J.A., Mickelson, D.M., Knox, J.C., Goebel, J.E., Hobbs, H.C., Whitfield, J.W., Ward, R.A., Boellstorff, J.D., Swinehart, J.B., and Dreeszen, V.H., compilers; Richmond, G.M., Fullerton, D.S., and Christiansen, A.C., eds., 1994, Quaternary geologic map of the Des Moines 4° x 6° Quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-15), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-15/ This report 896 Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, Map A-1, scale 1:500,000. This report 1632 Schuster, J.E., 2005, Geologic map of Washington State: Washington Division of Geology and Earth Resources, Geologic Map GM-53, scale 1:500,000. This report 1655 Cleaves, E.T., Edwards, J., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Scale 1:250,000. This report 1645 Osborne, W.E., Szabo, M.W., Copeland Jr., C.W., and Neathery, T.L., 1989, Geologic Map of Alabama: Geological Survey of Alabama Special Map 221, scale 1:500,000. This report 835 Stewart, J.H, and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey, scale 1:500,000 This report 962 Reed, R.C., and Daniels, J., compilers., 1987, Bedrock geology of northern Michigan: Michigan Department of Natural Resources, Geological Survey Division, scale 1:500,000. This report 632 Berg, T.M., Edmunds, W.E., Geyer, A.R., Glover, A.D., Hoskins, D.M., MacLachlan, D.B., Root, S.I., Sevon, W.D., and Socolow, A.A. 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey Map 1, Scale 1:250,000. This report 1289 Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 983 Jirsa, M.A., Boerboom, T.J., Chandler, V.W., Mossler, J.H., Runkel, A.C., and Setterholm, D.R., 2011, Geologic map of Minnesota, Bedrock geology: Minnesota Geological Survey State Map Series S-21, scale 1:500,000. This report 1666 Jennings, C.W., Gutierrez, C., Bryant, W., Saucedo, G., and Wills, C., 2010, Geologic Map of California: California Geological Survey Geologic Data Map GDM-2.2010 This report 871 Love, J.D., and Christiansen, A.C., 1985, Geologic map of Wyoming: U.S. Geological Survey, scale 1:500,000 This report 1293 Combination of multiple sources: Surficial Geology Material Explanation|Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 623 Slucher, E.R., Swinford, E.M., Larsen, G.E., Schumacher, G.A., Shrake, D.L., Rice, C.L., Caudill, M.R., Rea, R.G., and Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey, Map BG-1, scale 1:500,000. This report 1073 Noger, M.C., 1988, Geologic map of Kentucky: U.S. Geological Survey, scale 1:500,000. This report 574 Thompson, Thomas L., 1995, The stratigraphic succession in Missouri (revised); Missouri Geological Survey, Volume 40-revised, 2nd series, 189 p., 42 figs., 1 tbl. This report 614 Rickard, L.V., Isachsen, Y.W., and Fisher, D.W., 1970, Geologic Map of New York: New York State Museum and Science Service Map and Chart Series 15 (Explanatory sheet published in 1971), 5 sheets, scale 1:250,000 This report 1316 This Report This report 1173 Swinehart, J.B., Dreeszen, V.H., Richmond, G.M., Tipton, M.J., Bretz, Richard, Steece, F.V., Hallberg, G.R., and Goebel, J.E., compilers; Richmond, G.M., ed., 1994, Quaternary geologic map of the Platte River 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-14), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-14/ This report 1307 Combination of multiple sources: Minnesota Geologic Survey, D-01 database of Surficial Geology Of Minnesota, https://mngs-umn.opendata.arcgis.com/apps/UMN::d-01-surficial-geology-of-minnesota/about, accessed November 1st, 2023|Lusardi, Barbara A; Gowan, Angela S; McDonald, Jennifer M; Marshall, Katherine J; Meyer, Gary N; Wagner, Kaleb G. (2019). S-23 Geologic Map of Minnesota - Quaternary Geology. Minnesota Geological Survey. Scale 1:500,000. This report 1526 Digital database of the Montana state geologic map, submitted to STATEMAP in GeMS This report 1376 Hartshorn, J.H., Thompson, W.B., Chapman, W.F., Black, R.F., Richmond, G.M., Grant, D.R., and Fullerton, D.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1991, Quaternary Geologic Map of the Boston 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420(NK-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nk-19/ This report 1284 Cadwell, D.H., Dineen, R.J., Connally, G.G., Fleisher, P.J., and Rich, J.L., 1987, Surficial geologic map of New York; Hudson-Mohawk sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1095 Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic map of South Dakota: South Dakota Geological Survey General Map G-10, scale 1:500,000. This report 908 Virginia Division of Mineral Resources, 1993, Geologic map of Virginia, Virginia Division of Mineral Resources, series unknown, 1:500,000. This report 848 North Carolina Geological Survey, 1985, Geologic map of North Carolina: North Carolina Geological Survey General Geologic Map, scale 1:500,000. This report 1160 Lineback, J.A., Bleuer, N.K., Mickelson, D.M., Ferrand, W.R., and Goldthwait, R.P., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1983, Quaternary geologic map of the Chicago 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-16/ This report 1047 Scott, T.M., 2001, Text to accompany the geologic map of Florida: Florida Geological Survey Open-File Report 80, 30 p. This report 578 Kisvarsanyi, Eva B, 1981, Geology of the Precambrian St. Francois terrane, southeastern Missouri; Missouri Geological Survey, Report of Investigations 64 (Contribution to Precambrian Geology No. 8), vi+58 p., 1 pl., 9 figs., 10 tbls. This report 940 Witzke, B.J., Anderson, R.R., and Pope, J.P., 2010, Bedrock Geologic Map of Iowa: Iowa Geological Survey Open-File Map OFM-2010-01, scale 1:500,000. This report 1209 Goebel, J.E., Mickelson, D.M., Ferrand, W.R., Clayton, Lee, Knox, J.C., Cahow, Adam, Hobbs, H.C., Walton, M.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1983, Quaternary Geologic Map of the Minneapolis 4° x 6° Quadrangle, United States: U.S. Geological Survey iscellaneous Investigations Series Map I-1420(NL-15), scale 1:1,000,000, [Digital edition, 2007], https://pubs.usgs.gov/imap/i-1420/nl-15/ This report 1400 Thompson, Woodrow B., and Borns, Harold W., Jr. (editors), 1985, Surficial geologic map of Maine: Maine Geological Survey, 42" x 52" color map, scale 1:500,000. Maine Geological Survey Maps. 15. http://digitalmaine.com/mgs_maps/15 This report 1035 Tweto, Ogden, 1979, Geologic map of Colorado: U.S. Geological Survey, scale 1:500,000 This report 576 Ellis, Trevor, 2016, Bedrock geologic map of the Bunceton 7.5' quadrangle, Cooper County, Missouri; Missouri Geological Survey, Open File Map, OFM-2016-672-GS, scale 1:24000. | Starbuck, E.A., 2009, Bedrock geologic map of the Luystown 7.5' quadrangle Osage County, Missouri; Missouri Geological Survey, Open-File Map, OFM-09-549-GS, scale 1:24000. | Starbuck, E.A., 2004, Bedrock geologic map of the New Melle 7.5' quadrangle St. Charles and Warren counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-04-477-GS, scale 1:24000. This report 1320 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Northern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 1065 Kansas Geological Survey, 2008, Surficial Geology of Kansas: Kansas Geological Survey, Map M-118, scale 1:500,000 This report 1669 Pavey, R. R.; Goldthwait, R. P.; Brockman, S. C., Hull, D. N., Swinford, E. M., and Van Horn, R.G, 1999, Quaternary Geology of Ohio: Ohio Division of Geological Survey, Map No. 2, scale 1:500,000 This report 1281 Fullerton, D.S., Sevon, W.D., Muller, E.H., Judson, Sheldon, Black, R.F., Wagner, P.W., Hartshorn, J.H., Chapman, W.F., and Cowan, W.D., compilers; Fullerton, D.S., ed., 1992, Quaternary Geologic Map of the Hudson River 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-18), scale 1:1,000,000, [Digital edition, 2005], https://pubs.usgs.gov/imap/i-1420/nk-18/ This report 579 Selves, Tyler, 2021, Bedrock geologic map of the Dover 7.5' quadrangle, Lafayette County, Missouri; Missouri Geological Survey, Open File Map, OFM-2021-712-GS, scale 1:24000. This report 1197 Holbrook, D.F., Gilliland, W.A., Luza, K.V., Pope, D.E., Wermund, E.G., Miller, R.A., Bush, W.V., Jensen, K.N., and Fishman, W.D., compilers; Richmond, G.M., Fullerton, D.S., and Weide, D.L., eds., 1990, Quaternary geologic map of the Vicksburg 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map-1420 (NI-15), scale 1:1,000,000, [Bush, C.A., Digital edition, 2012], https://pubs.usgs.gov/imap/i-1420/ni-15/ This report 863 Willoughby, H. and Nystrom, 2005, Generalized geologic map of South Carolina (original compilation by Maybin and Nystrom, 1997): South Carolina Geological Survey Geologic Map GGMS-1, scale 1:1,000,000. Version 2.0 revised 04/2006. This report 1239 Farrand, W.R., Mickelson, D.M., Cowan, W.R., and Goebel, J.E., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1984, Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nl-16/ This report 1084 Snead, J.I., and McCulloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey Geologic Map 5, scale 1:500,000. This report 887 Kolata, D.R., comp., 2005, Bedrock Geology of Illinois: Champaign, Ill., Illinois State Geological Survey, Illinois Map Series 14, scale 1:500,000. This report 575 Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1652 Lewis, R.S., Link, P.K., Stanford, L.R., and Long, S.P., 2012, Geologic map of Idaho: Idaho Geological Survey, Map M-9, scale 1:750,000. This report GeoMaterial Categorization of map unit based on lithologic and genetic character, term selected from NGMDB standard term list defined in Appendix A of GeMS documentation, available at http://ngmdb.usgs.gov/Info/standards/GeMS.. GeMS Eolian sediment Silt- and sand-sized sediment, deposited by wind. GeMS Coastal zone sediment Mud and sand, with lesser amounts of gravel, deposited on beaches, on barrier islands, or in nearshore-marine, deltaic, or various low-energy shoreline (mud flat, tidal flat, sabka, algal flat) environments. GeMS Metasedimentary rock Rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Chert Sedimentary rock, composed chiefly of microcrystalline or cryptocrystalline quartz. GeMS Coastal zone sediment, mostly coarse-grained Mostly sand, silt, and gravel, deposited on beaches, in dunes, and in shallow-marine and related alluvial environments. GeMS Igneous and metamorphic rock Consists of coarse-grained intrusive igneous rock and generally medium- to high-grade metamorphic rock. GeMS Meta-ultramafic rock Rock derived from preexisting ultramafic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of magnesium-bearing minerals (for example, serpentine, talc, magnesite). GeMS Debris flows, landslides, and other localized mass-movement sediment Sediment formed by relatively localized, downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. Speed of downslope transport ranges from rapid to imperceptible. GeMS Lacustrine sediment, mostly coarse-grained Mostly well-sorted and well-bedded material, generally sand and gravel sized, with lesser amounts of silt and clay, deposited in perennial to intermittent lakes. Much of sediment is derived from material eroded and transported by streams. Mostly deposits of lake-marginal beaches and deltas. GeMS Medium and high-grade regional metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to relatively intense regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. Includes amphibolite, granulite, schist, and gneiss. GeMS Alluvial sediment Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Grain size varies from clay to gravel. GeMS Meta-volcaniclastic rock Rock derived from preexisting volcaniclastic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed of deformed but recognizable particles or clasts of volcanic explosive material. GeMS Intermediate-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Parental magma commonly erupts from stratovolcanoes as thick lava flows. Includes rocks that are, in color and in mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano or caldera. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. GeMS Carbonate rock Sedimentary rock, consisting chiefly of carbonate minerals such as limestone or dolomite. GeMS "Made" or human-engineered land Modern, unconsolidated material known to have human-related origin. GeMS Playa sediment Fine-grained clastic sediment and evaporitic salts, deposited in ephemeral lakes in centers of undrained basins. Includes material deposited in playas, mud flats, salt flats, and adjacent saline marshes. Generally interbedded with eolian sand and with lacustrine sediment deposited during wetter climatic periods; commonly intertongues upslope with sediment deposited by alluvial fans. GeMS Unmapped area Unmapped area GeMS Alluvial sediment, mostly coarse-grained Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Sediment is mostly sand, gravel, and coarser material but may also contain some silt and clay. GeMS Sedimentary and extrusive igneous material Either (1) sedimentary rock and (or) unconsolidated material (sediment) and extrusive igneous material (volcanic rock and [or] sediment) or (2) volcanic rock and (or) sediment and such material after erosion and redeposition. GeMS Metaigneous rock Rock derived from preexisting igneous rocks and altered by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Coarse-grained intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. GeMS Meta-felsic and intermediate rock Rock derived from preexisting felsic and intermediate-composition rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of light-colored minerals; relatively enriched in silica. Includes metagranite, metadiorite, and meta-andesite. GeMS Marine sediment, mostly coarse-grained Mud, sand, and gravel eroded from rocks and sediment on land, transported by streams, and deposited in marine deltas and basins. Mostly siliceous in composition. GeMS Dolomite Carbonate sedimentary rock, consisting chiefly of dolomite. Although dolostone is the proper analog to limestone, it has not often been applied to dolomitic units. GeMS Lacustrine sediment, mostly fine-grained Mostly well-sorted and well-bedded material, generally silt and clay sized, with lesser amounts of sand, deposited in perennial to intermittent lakes. GeMS Coal and lignite Organic-rich sedimentary rock, formed from compaction and alteration of plant remains. Coal is consolidated, harder, black rock. Lignite is semiconsolidated, brown to black, earthy material that may contain large particles of recognizable plant parts and tends to crack upon drying. GeMS Slate and phyllite, of sedimentary-rock origin Fine-grained rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Includes phyllite and slate (compact, fine-grained rock that possesses strong cleavage and, hence, can be split into slabs and thin plates). Mostly formed from fine-grained material such as mudstone. GeMS Air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Fine tephra deposited at some distance from volcano is known as volcanic ash. GeMS Coastal zone sediment, mostly fine-grained Mostly clay and silt, deposited in lagoons, tidal flats, backbarriers, and coastal marshes. GeMS Sand and gravel of unspecified origin Sediment composed mostly of sand and (or) gravel, formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Sedimentary material An aggregation of particles deposited by gravity, air, water, or ice, or as accumulated by other natural agents operating at Earths surface such as chemical precipitation or secretion by organisms. May include unconsolidated material (sediment) and (or) sedimentary rock. Does not include sedimentary material directly deposited as a result of volcanic activity. GeMS Loess Silty sediment, deposited by wind, commonly near glacial margin. GeMS Conglomerate Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; contains more than 30 percent gravel-sized clasts. GeMS Mostly mudstone Mostly mudstone, interbedded with other sedimentary rocks that locally may include coarser grained clastic rocks (sandstone, conglomerate), carbonates, and (or) coal. GeMS Alluvial sediment, mostly fine-grained Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Sediment is mostly silt and clay but may also contain some sand and gravel. GeMS Intermediate-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Parental magma commonly erupts from stratovolcanoes as thick lava flows but also can generate strong explosive eruptions to form pyroclastic flows. Includes rocks that are, in color and mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Limestone Carbonate sedimentary rock, consisting chiefly of calcite. GeMS Coarse-grained, intermediate-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Intermediate in color and in mineral composition (between felsic and mafic igneous rock). Includes dioritic rock. GeMS Dune sand Mostly sand-sized sediment, deposited by wind. Typically characterized by various dune landforms. GeMS Exotic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) below Earths surface that has exotic mineralogical, textural, or field setting characteristics. Typically dark colored with abundant phenocrysts. Includes kimberlite, lamprophyre, lamproite, and foiditic rocks. GeMS Marine sediment Mud and sand, deposited in various marine environments. May originate from erosion of rocks and sediment or may be derived from marine organisms (of carbonate or siliceous composition). GeMS Ultramafic intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed almost entirely of mafic minerals (for example, hypersthene, augite, olivine). GeMS Sedimentary rock Consolidated material (rock) composed of particles transported and deposited by gravity, air, water, or ice, or accumulated by other natural agents operating at Earths surface, such as chemical precipitation or secretion by organisms. Does not here include sedimentary material directly deposited as result of volcanic activity. GeMS Contact-metamorphic rock Altered rock that originated by local processes of thermal metamorphism, genetically related to intrusion and extrusion of magmas and taking place at or near contact with body of igneous rock. Metamorphic changes are effected by heat and fluids emanating from magma and by some deformation because of emplacement of igneous mass. GeMS Igneous rock Rock and fragmental material that solidified from molten or partly molten material (magma). GeMS Lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Composed generally of fine-grained, dark-colored rocks (for example, basalt), which tend to form extensive sheets that have generally low relief, except in vent areas where cinder cones or shield volcanoes may form. Includes basaltic shield volcanoes, which may become very large (for example, Hawaii). GeMS Mafic-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Because of their low silica content and resulting low viscosity, parental magmas tend to erupt gently as lava flows rather than more forcefully as pyroclastic flows. Includes basalt; rocks are commonly dark-colored. GeMS Other materials Other materials GeMS Silt and clay of unspecified origin Sediment composed mostly of silt and (or) clay, formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Marine sediment, mostly fine-grained Mostly clay- and silt-sized sediment, deposited in relatively deep, quiet water, far removed from areas where coarser grained clastic sediments are washed into marine environment. Includes sediment derived from marine organisms. GeMS Evaporitic rock Sedimentary rock, composed primarily of minerals produced by evaporation of saline solution. Examples include gypsum, anhydrite, other diverse sulfates, halite (rock salt), primary dolomite, and rocks composed of various nitrates and borates. GeMS Glacial till Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. GeMS Quartzite Rock derived from preexisting quartz-rich sedimentary rocks (commonly sandstone) and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Intrusive igneous rock Rock that solidified from molten or partly molten material (magma) below Earths surface. GeMS Metamorphic rock Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Volcaniclastic (fragmental) material Rock and unconsolidated material consisting of particles or clasts that were formed by volcanic explosion or aerial expulsion from volcanic vent. GeMS Mafic-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Low-silica parental magmas have low viscosity and tend to form extensive sheets that have generally low relief. Includes basaltic shield volcanoes, which may become very large (for example, in Hawaii). Composed of fine-grained, dark rocks, including basaltic. GeMS Colluvium and other widespread mass-movement sediment Sediment formed by slow, relatively widespread, downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. GeMS Sandstone Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; consists mostly of sand-sized particles, with or without fine-grained matrix of silt or clay. GeMS Fine-grained intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. GeMS Ice-contact and ice-marginal sediment, mostly fine-grained Mostly silt- and clay-sized particles or clasts, with lesser amounts of sand and gravel, derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Sediment Unconsolidated material (sediment) composed of particles deposited by gravity, air, water, or ice, or as accumulated by other natural agents operating at Earths surface such as chemical precipitation or secretion by organisms. Does not include sedimentary material directly deposited as a result of volcanic activity. GeMS Deformation-related metamorphic rock Rock derived from preexisting rocks by essentially solid-state mineralogical, chemical, or structural changes in response to strong deformation, commonly in association with marked changes in temperature, pressure, and (or) chemical environment. Generally forms in narrow, planar zones of local deformation (for example, along faults); characterized by foliation or alignment of mineral grains. Includes mylonite and cataclasite. GeMS Iron-rich sedimentary rock Sedimentary rock, in which at least half (by volume) of observed minerals are iron bearing (hematite, magnetite, limonite group minerals, siderite, iron sulfides). GeMS Felsic-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Because of their high silica content and resulting high viscosity, parental magmas tend to erupt explosively, and so these deposits are uncommon. Includes fine-grained, light-colored rock with rhyolitic, dacitic, trachytic, and latitic composition. GeMS Sandstone and mudstone Sandstone and mudstone (including shale and siltstone), in approximately equal (or unspecified) proportions. GeMS Intermediate-composition air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into the air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Parental magma commonly erupts from stratovolcanoes as thick lava flows but also can generate strong explosive eruptions to form pyroclastic flows. Includes rocks that are, in color and mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Residual material Unconsolidated material, developed in place by weathering of underlying rock or sediment. Usually forms relatively thin surface layer that conceals unweathered or partly altered source material. Material from which soils are formed. GeMS Mostly sandstone Mostly sandstone, interbedded with other sedimentary rocks that locally may include conglomerate and finer grained clastic rocks (mudstone), carbonates, and (or) coal. GeMS Clastic sediment Sediment formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Water or ice Water or ice GeMS Ice-contact and ice-marginal sediment Mostly sand-, silt-, and gravel-sized particles or clasts derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Felsic-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano or caldera. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Because of their high-silica content and resulting high viscosity, parental magmas tend to erupt explosively. Includes rhyolite, dacite, trachyte, latite; rocks are commonly light-colored. GeMS Fine-grained, intermediate-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Intermediate in color and in mineral composition (between felsic and mafic igneous rock). Includes andesitic rock. GeMS Mostly carbonate rock Mostly carbonate rock, interbedded with other sedimentary rock types. GeMS Regional metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. GeMS Glacial till, mostly silty Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively loamy (silty) in texture. GeMS Mudstone Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; consists mostly of mud (that is, silt- and clay-sized particles). Includes shale and siltstone. GeMS Lower-grade metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to relatively mild regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. Includes slate and phyllite. GeMS Rock Various rock types, not differentiated. GeMS Fine-grained, felsic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Composed mostly of light-colored minerals. Includes rhyolitic, dacitic, trachytic, and latitic rock. GeMS Carbonate sediment Sediment formed by biotic or abiotic precipitation from aqueous solution of carbonates of calcium, magnesium, or iron (for example, limestone, dolomite). GeMS Meta-carbonate rock Rock derived from preexisting carbonate sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Characterized by recrystallization of carbonate minerals in source rock. Includes marble (for which preexisting rock was dominantly limestone or other rock composed of calcite), dolomitic marble, meta-dolostone, and meta-dolomite (for which preexisting rock contained appreciable amount of magnesium). GeMS Peat and muck Unconsolidated material, principally composed of plant remains, with lesser amounts of fine-grained clastic sediment. Deposited in water-saturated environment such as swamp, marsh, or bog. With lithification, such material becomes coal. GeMS Felsic-composition air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Because of their high silica content and resulting high viscosity, felsic-composition magmas tend to erupt explosively, readily forming pumice and volcanic ash. Composed of light-colored rocks (for example, rhyolite, dacite, trachyte, latite). GeMS Schist and gneiss, of sedimentary-rock origin Foliated rock derived from preexisting sedimentary rocks by essentially solid-state mineralogical, chemical, or structural changes in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Includes schist (characterized by such strong foliation or alignment of minerals that it readily splits into flakes or slabs) and gneiss (characterized by alternating, irregular bands of different mineral composition). Mostly formed from fine-grained material such as mudstone. GeMS Coarse-grained, mafic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of feldspar and dark-colored minerals. Includes gabbroic rock. GeMS Glacial till, mostly clayey Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively clayey in texture. GeMS Clastic sedimentary rock Sedimentary rock, composed predominantly of particles or clasts derived by erosion, weathering, or mass-wasting of preexisting rock and deposited by gravity, air, water, or ice. GeMS Volcanic mass flow Volcanic deposits formed by mass movement (for example, debris avalanches, debris flows, lahar deposits), in many cases triggered by volcanic eruption. Debris avalanches that occur on volcanoes clearly without eruptive trigger may be classified as sedimentary (for example, as Debris flows, landslides, and other localized mass-movement sediment). GeMS Coarse-grained, felsic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of light-colored minerals (for example, feldspar, quartz). Includes granitic, syenitic, and monzonitic rock. GeMS Meta-mafic rock Rock derived from preexisting mafic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of iron- and magnesium-bearing, dark-colored and (or) green minerals. Includes greenstone, amphibolite, and metagabbro. GeMS Lacustrine sediment Mostly well-sorted and well-bedded material that ranges in grain size from clay to gravel, deposited in perennial to intermittent lakes. Much of sediment is derived from material eroded and transported by streams. Includes deposits of lake-marginal beaches and deltas. GeMS Glacial till, mostly sandy Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively sandy in texture. GeMS Fine-grained, mafic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Composed mostly of dark-colored minerals. Includes basaltic rock. GeMS Ice-contact and ice-marginal sediment, mostly coarse-grained Mostly sand- and gravel-sized particles or clasts, with lesser amounts of silt and clay, derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Extrusive igneous material Molten material that was erupted onto Earths surface, fusing into rock or remaining as unconsolidated particles. Includes pyroclastic flows, air-fall tephra, lava flows, and volcanic mass flows. GeMS GeoMaterialConfidence Describes appropriateness of GeoMaterial term for describing the map unit. GeMS Low Either (1) the overall lithologic nature of rocks and (or) sediments in this map unit is not adequately classifiable using the available list of GeoMaterial terms (and their definitions), but the selected term is the best available, or (2) this map unit is not sufficiently known enough to confidently assign a GeoMaterial term. U.S. Geological Survey, 2020, GeMS (Geologic Map Schema)--A Standard Format for the Digital Publication of Geologic Maps: U.S. Geological Survey Techniques and Methods 11-B10. High The selected term in the GeoMaterial field (and its definition) adequately characterizes the overall lithologic nature of rocks and (or) sediments in the map unit. U.S. Geological Survey, 2020, GeMS (Geologic Map Schema)--A Standard Format for the Digital Publication of Geologic Maps: U.S. Geological Survey Techniques and Methods 11-B10. Medium The selected term in the GeoMaterial field (and its definition) generally characterizes the overall lithologic nature of rocks and (or) sediments in the map unit, but one or more significant but minor lithologies are not adequately described by the selected term. U.S. Geological Survey, 2020, GeMS (Geologic Map Schema)--A Standard Format for the Digital Publication of Geologic Maps: U.S. Geological Survey Techniques and Methods 11-B10. Source_DescriptionOfMapUnits_ID Primary key on the Source_DescriptionOfMapUnits table. This Report Unrepresentable domain Synthesis_to_Source_Units Table defining relationships between "source map units" and synthesis "map units". This Report OBJECTID Internal feature number ESRI Unrepresentable domain MapSourceID Identifies source map. Foreign key to DataSources table. This Report Unrepresentable domain Source_DescriptionOfMapUnitsID Foreign key to DescriptionOfMapUnits table. This Report Unrepresentable domain Source_MapUnit Short, easily understood ASCII-character identifier for the source map unit. Prefixed with a MapSourceID value (from Source_DescriptionOfMapUnits) to differentiate identically-named source map units from different source maps. Otherwise conceptually equivalent to the "MapUnit" field in the GeMS "DescriptionOfMapUnits" table. This Report Unrepresentable domain DescriptionOfMapUnitsID Foreign key to DescriptionOfMapUnits table. This Report Unrepresentable domain MapUnit Short plain-text identifier of the map unit. Foreign key to DescriptionOfMapUnits table. GeMS Qv Volcanic rocks This Report PZpCm Metamorphic rocks This Report Qpm Peat and muck This Report Psm Sedimentary rocks This Report MZPZu Undifferentiated Mesozoic and Paleozoic rocks This Report Yms Sedimentary and metasedimentary rocks This Report Qg Glacial till, undifferentiated This Report Ymg Mafic intrusive rocks This Report water Water and ice This Report Kse Sedimentary rocks This Report MZgr Granitic rocks This Report Zg Granitic rocks This Report Xmsq Quartzite This Report TpCim Igneous and metamorphic rocks of unspecfied age This Report Xi Igneous and metaigneous rocks This Report Yl Igneous rocks This Report Qai Intermediate alluvial sediment This Report Ti Intrusive rocks This Report Xig Granitic rocks This Report PZpCmg Metaigneous rocks This Report Ql Lacustrine sediment This Report TRs Sedimentary rocks This Report MZim Undifferentiated igneous and metamorphic rocks This Report Ai Intrusive rocks This Report PNsm Sedimentary rocks This Report MZms Sedimentary and metasedimentary rocks This Report PZpCu Undifferentiated Paleozoic to Precambrian rocks This Report Qls Debris flows, landslides, and other localized mass-movement sediment This Report Ds Sedimentary rocks This Report Zm Metamorphic and igneous rocks This Report Pse Sedimentary rocks This Report mTs Sedimentary rocks This Report paTs Sedimentary rocks This Report PNs Sedimentary rocks This Report Dsme Sedimentary rocks This Report Ks Sedimentary rocks This Report Ss Sedimentary rocks This Report PZu Undifferentiated Paleozoic rocks This Report TMZum Ultramafic rocks This Report CAs Sedimentary rocks This Report TMZu Undifferentiated Tertiary and Mesozoic rocks This Report oTs Sedimentary rocks This Report Ksl Sedimentary rocks This Report PZpCg Igneous rocks This Report Qp Playa sediment This Report paTKs Clastic sedimentary rocks This Report scz Shear zone rocks This Report Xms Metasedimentary rocks This Report Qa Alluvial sediment, undifferentiated This Report ngTs Sedimentary rocks This Report Qcsr Carbonate sediment and evaporite This Report Dsl Sedimentary rocks This Report Os Sedimentary rocks This Report Mzgm Mafic intrusive rocks This Report Ymc Marble and calc-silicate rocks This Report Tva Intermediate volcanic rocks This Report Tvs Volcaniclastic rocks This Report Xu Undifferentiated Paleoproterozoic rocks This Report QTv Volcanic rocks This Report Qu Quaternary units, undifferentiated This Report MZum Ultramafic rocks This Report Ymss Clastic sedimentary rocks This Report Ms Sedimentary rocks This Report PZm Undifferentiated metamorphic rocks This Report Qay Young alluvial sediment This Report Qcz Coastal zone sediment This Report Cs Sedimentary rocks This Report PNse Sedimentary rocks This Report TMZs Clastic sedimentary rocks This Report PZum Ultramafic rocks This Report Zms Metasedimentary rocks This Report MZm Metamorphic rocks This Report PPNs Sedimentary rocks This Report CAm Metamorphic rocks This Report Qgo Older glacial till This Report TMZg Intrusive rocks This Report Qic Ice-contact and ice-marginal sediment This Report Tvm Mafic volcanic rocks This Report MZv Volcanic rocks This Report QTs Clastic sediments, undifferentiated This Report Xmss Slate and sandstone This Report Psl Sedimentary rocks This Report Zs Clastic sedimentary rocks This Report Qe Eolian sediment This Report Ygg Granitic rocks This Report pC Undifferentiated Precambrian rocks This Report Aum Ultramafic rocks This Report pgTs Sedimentary rocks This Report eTs Sedimentary rocks This Report plTs Sedimentary rocks This Report Js Sedimentary rocks This Report Au Undifferentiated Archean rocks This Report Xif Iron formation This Report Aig Granitic rocks This Report PZi Paleozoic igneous and metaigneous rocks This Report PRu Undifferentiated Proterozoic rocks This Report Xim Gabbro and mafic lava flows This Report CAZms Metasedimentary rocks This Report Qm Marine sediment This Report Ps Sedimentary rocks This Report Tvr Felsic volcanic rocks This Report Qs Clastic sediments, undifferentiated This Report af Artificial fill This Report PNsl Sedimentary rocks This Report unmapped Unmapped areas This Report Tu Tertiary rocks This Report Tvi Extrusive igneous rocks This Report Oes Sedimentary rocks This Report Ams Metasedimentary rocks This Report PZpCms Metasedimentary rocks This Report Zmg Metaigneous rocks This Report PZms Sedimentary and metasedimentary rocks This Report Olms Sedimentary rocks This Report PRum Ultramafic rocks This Report Qico Older ice-contact and ice-marginal sediment This Report Yu Undifferentiated Mesoproterozoic rocks This Report Ts Sedimentary rocks This Report MZvs Volcaniclastic rocks This Report PZpCum Ultramafic rocks This Report Qao Old alluvial sediment This Report Aif Iron formation This Report Symbol_Lookup FGDC symbols used in the source maps referenced herein. This Report OBJECTID Internal feature number ESRI Unrepresentable domain Symbol_Lookup_ID Primary key on the Symbol_Lookup table. This Report Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain IsConcealed Flag for contacts and faults covered by overlying map unit. GeMS Unrepresentable domain LocationConfidenceMeters Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. GeMS Positive real number. Value of -9, -99, or -999 indicates value is unknown. Type Classifier that specifies what kind of geologic feature is represented by a database element: that a certain line within feature class ContactsAndFaults is a contact, or thrust fault, or water boundary; or that a point in GeochronPoints represents a K-Ar date. GeMS reverse fault A fault on which the hanging wall has moved upward relative to the footwall. The dip of the fault is usually greater than 45°. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. shoreline A line delineating the boundary of a body of water, such as a river, lake, or the ocean This Report internal contact A planar or irregular surface separating different portions of the same geologic map unit, such as individual landslide blocks with a mapped landslide, or separately emplaced portions of a composite plutonic unit. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. strike-slip fault, right lateral offset A strike-slip fault on which the side opposite the observer has been displaced to the right. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. thrust fault A fault with a dip of 45° or less over much of its extent, on which the hanging wall has moved upward relative to the footwall. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. gradational contact A contact defined by a gradual or continuous lithologic change from one geologic map unit to another. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. contact A plane or irregular surface between two types or ages of rock. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. oblique-slip fault, left lateral offset A fault on which the net slip has dip slip and strike slip components, and the side opposite the observer has been displaced to the left. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. normal fault A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is usually 45-90 degrees, and in most cases close to 60 degrees. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. overturned thrust fault A fault with an original dip of 45° or less over much of its extent, on which the hanging wall has moved upward relative to the footwall, that has subsequently been rotated beyond perpendicular so that the primary hanging wall and footwall positioning have been reversed. This Report shear zone A discrete, parallel-sided zone of localized shearing displacement, which may be recognized by sigmoidal mineral-filled veins, locally well-developed cleavage or foliation, wholesale grain-size reduction or mylonitization, or some combination of these features. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. detachment fault A regionally extensive, gently dipping normal fault that is commonly associated with extension in a metamorphic core complex. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. glacial terminus The lower margin or extremity of a glacier, referring to the maximum extent (limit) reached by the glacier. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. strike-slip fault, left lateral offset A strike-slip fault on which the side opposite the observer has been displaced to the left. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. scratch boundary Arbitrary, non-physical boundary between map units on a geologic map. For example, between an undivided unit and its subunits, or between different names for the same package of rocks. This Report key bed A well-defined, easily identifiable stratum or body of strata that has sufficiently distinctive characteristics (such as lithology or fossil content) to facilitate correlation in field mapping or subsurface work. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. fault A discrete surface or zone of discrete surfaces separating two rock masses across which one mass has slid past the other. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. listric fault A curved downward-flattening fault, generally concave upward. Listric faults may be characterized by normal or reverse separation, but the term is used most frequently in normal faulting and is often a characteristic of growth faults. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. limit of significant glacial advance The extent reached by the glacier during an interval of positive net balance. Often corresponds with significant sediment deposition. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. low-angle normal fault A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is less than 45 degrees. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. oblique-slip fault, right lateral offset A fault on which the net slip has dip slip and strike slip components, and the side opposite the observer has been displaced to the right. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. map boundary The boundary of the map. In a GIS database, the line that bounds the outer extent of the polygons. This Report outcrop That part of a geologic formation or structure that appears at the surface of the Earth. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. SymbolClass Short description of which class of vector features this symbol applies to; line, point, or fill. This Report Unrepresentable domain ExistenceConfidence Confidence that feature exists. GeMS questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. IdentityConfidence Confidence that feature is correctly identified. GeMS questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. GeoMaterialDict Non-spatial table that provides values of GeoMaterial, placed in a hierarchy, and their definitions. For further information, see Appendix A in GeMS documentation, available at http://ngmdb.usgs.gov/Info/standards/GeMS. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain HierarchyKey String that records hierarchical structure. Has form nn-nn-nn, nnn-nnn, or similar. Numeric, left-padded with zeros, dash-delimited. Each HierarchyKey fragment of each row MUST be the same length to allow text-based sorting of table entries. GeMS Unrepresentable domain GeoMaterial Categorization of map unit based on lithologic and genetic character, term selected from NGMDB standard term list defined in Appendix A of GeMS documentation, available at http://ngmdb.usgs.gov/Info/standards/GeMS.. GeMS Eolian sediment Silt- and sand-sized sediment, deposited by wind. GeMS Coastal zone sediment Mud and sand, with lesser amounts of gravel, deposited on beaches, on barrier islands, or in nearshore-marine, deltaic, or various low-energy shoreline (mud flat, tidal flat, sabka, algal flat) environments. GeMS Metasedimentary rock Rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Chert Sedimentary rock, composed chiefly of microcrystalline or cryptocrystalline quartz. GeMS Coastal zone sediment, mostly coarse-grained Mostly sand, silt, and gravel, deposited on beaches, in dunes, and in shallow-marine and related alluvial environments. GeMS Igneous and metamorphic rock Consists of coarse-grained intrusive igneous rock and generally medium- to high-grade metamorphic rock. GeMS Meta-ultramafic rock Rock derived from preexisting ultramafic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of magnesium-bearing minerals (for example, serpentine, talc, magnesite). GeMS Debris flows, landslides, and other localized mass-movement sediment Sediment formed by relatively localized, downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. Speed of downslope transport ranges from rapid to imperceptible. GeMS Lacustrine sediment, mostly coarse-grained Mostly well-sorted and well-bedded material, generally sand and gravel sized, with lesser amounts of silt and clay, deposited in perennial to intermittent lakes. Much of sediment is derived from material eroded and transported by streams. Mostly deposits of lake-marginal beaches and deltas. GeMS Medium and high-grade regional metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to relatively intense regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. Includes amphibolite, granulite, schist, and gneiss. GeMS Alluvial sediment Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Grain size varies from clay to gravel. GeMS Meta-volcaniclastic rock Rock derived from preexisting volcaniclastic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed of deformed but recognizable particles or clasts of volcanic explosive material. GeMS Intermediate-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Parental magma commonly erupts from stratovolcanoes as thick lava flows. Includes rocks that are, in color and in mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano or caldera. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. GeMS Carbonate rock Sedimentary rock, consisting chiefly of carbonate minerals such as limestone or dolomite. GeMS "Made" or human-engineered land Modern, unconsolidated material known to have human-related origin. GeMS Playa sediment Fine-grained clastic sediment and evaporitic salts, deposited in ephemeral lakes in centers of undrained basins. Includes material deposited in playas, mud flats, salt flats, and adjacent saline marshes. Generally interbedded with eolian sand and with lacustrine sediment deposited during wetter climatic periods; commonly intertongues upslope with sediment deposited by alluvial fans. GeMS Unmapped area Unmapped area GeMS Alluvial sediment, mostly coarse-grained Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Sediment is mostly sand, gravel, and coarser material but may also contain some silt and clay. GeMS Sedimentary and extrusive igneous material Either (1) sedimentary rock and (or) unconsolidated material (sediment) and extrusive igneous material (volcanic rock and [or] sediment) or (2) volcanic rock and (or) sediment and such material after erosion and redeposition. GeMS Metaigneous rock Rock derived from preexisting igneous rocks and altered by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Coarse-grained intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. GeMS Meta-felsic and intermediate rock Rock derived from preexisting felsic and intermediate-composition rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of light-colored minerals; relatively enriched in silica. Includes metagranite, metadiorite, and meta-andesite. GeMS Marine sediment, mostly coarse-grained Mud, sand, and gravel eroded from rocks and sediment on land, transported by streams, and deposited in marine deltas and basins. Mostly siliceous in composition. GeMS Dolomite Carbonate sedimentary rock, consisting chiefly of dolomite. Although dolostone is the proper analog to limestone, it has not often been applied to dolomitic units. GeMS Lacustrine sediment, mostly fine-grained Mostly well-sorted and well-bedded material, generally silt and clay sized, with lesser amounts of sand, deposited in perennial to intermittent lakes. GeMS Coal and lignite Organic-rich sedimentary rock, formed from compaction and alteration of plant remains. Coal is consolidated, harder, black rock. Lignite is semiconsolidated, brown to black, earthy material that may contain large particles of recognizable plant parts and tends to crack upon drying. GeMS Slate and phyllite, of sedimentary-rock origin Fine-grained rock derived from preexisting sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Includes phyllite and slate (compact, fine-grained rock that possesses strong cleavage and, hence, can be split into slabs and thin plates). Mostly formed from fine-grained material such as mudstone. GeMS Air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Fine tephra deposited at some distance from volcano is known as volcanic ash. GeMS Coastal zone sediment, mostly fine-grained Mostly clay and silt, deposited in lagoons, tidal flats, backbarriers, and coastal marshes. GeMS Sand and gravel of unspecified origin Sediment composed mostly of sand and (or) gravel, formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Sedimentary material An aggregation of particles deposited by gravity, air, water, or ice, or as accumulated by other natural agents operating at Earths surface such as chemical precipitation or secretion by organisms. May include unconsolidated material (sediment) and (or) sedimentary rock. Does not include sedimentary material directly deposited as a result of volcanic activity. GeMS Loess Silty sediment, deposited by wind, commonly near glacial margin. GeMS Conglomerate Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; contains more than 30 percent gravel-sized clasts. GeMS Mostly mudstone Mostly mudstone, interbedded with other sedimentary rocks that locally may include coarser grained clastic rocks (sandstone, conglomerate), carbonates, and (or) coal. GeMS Alluvial sediment, mostly fine-grained Unconsolidated material deposited by streams or other bodies of running water as sorted or semisorted sediment in streambed, or on its floodplain or delta, or as cone or fan at base of mountain slope. Sediment is mostly silt and clay but may also contain some sand and gravel. GeMS Intermediate-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Parental magma commonly erupts from stratovolcanoes as thick lava flows but also can generate strong explosive eruptions to form pyroclastic flows. Includes rocks that are, in color and mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Limestone Carbonate sedimentary rock, consisting chiefly of calcite. GeMS Coarse-grained, intermediate-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Intermediate in color and in mineral composition (between felsic and mafic igneous rock). Includes dioritic rock. GeMS Dune sand Mostly sand-sized sediment, deposited by wind. Typically characterized by various dune landforms. GeMS Exotic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) below Earths surface that has exotic mineralogical, textural, or field setting characteristics. Typically dark colored with abundant phenocrysts. Includes kimberlite, lamprophyre, lamproite, and foiditic rocks. GeMS Marine sediment Mud and sand, deposited in various marine environments. May originate from erosion of rocks and sediment or may be derived from marine organisms (of carbonate or siliceous composition). GeMS Ultramafic intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed almost entirely of mafic minerals (for example, hypersthene, augite, olivine). GeMS Sedimentary rock Consolidated material (rock) composed of particles transported and deposited by gravity, air, water, or ice, or accumulated by other natural agents operating at Earths surface, such as chemical precipitation or secretion by organisms. Does not here include sedimentary material directly deposited as result of volcanic activity. GeMS Contact-metamorphic rock Altered rock that originated by local processes of thermal metamorphism, genetically related to intrusion and extrusion of magmas and taking place at or near contact with body of igneous rock. Metamorphic changes are effected by heat and fluids emanating from magma and by some deformation because of emplacement of igneous mass. GeMS Igneous rock Rock and fragmental material that solidified from molten or partly molten material (magma). GeMS Lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Composed generally of fine-grained, dark-colored rocks (for example, basalt), which tend to form extensive sheets that have generally low relief, except in vent areas where cinder cones or shield volcanoes may form. Includes basaltic shield volcanoes, which may become very large (for example, Hawaii). GeMS Mafic-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Because of their low silica content and resulting low viscosity, parental magmas tend to erupt gently as lava flows rather than more forcefully as pyroclastic flows. Includes basalt; rocks are commonly dark-colored. GeMS Other materials Other materials GeMS Mass movement sediment Sediment formed by downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. Includes colluvial, landslide, talus, and rock-avalanche deposits. GeMS Silt and clay of unspecified origin Sediment composed mostly of silt and (or) clay, formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Marine sediment, mostly fine-grained Mostly clay- and silt-sized sediment, deposited in relatively deep, quiet water, far removed from areas where coarser grained clastic sediments are washed into marine environment. Includes sediment derived from marine organisms. GeMS Evaporitic rock Sedimentary rock, composed primarily of minerals produced by evaporation of saline solution. Examples include gypsum, anhydrite, other diverse sulfates, halite (rock salt), primary dolomite, and rocks composed of various nitrates and borates. GeMS Glacial till Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. GeMS Quartzite Rock derived from preexisting quartz-rich sedimentary rocks (commonly sandstone) and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, shear stress, and (or) chemical environment, generally at depth in Earths crust. GeMS Intrusive igneous rock Rock that solidified from molten or partly molten material (magma) below Earths surface. GeMS Metamorphic rock Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. GeMS Volcaniclastic (fragmental) material Rock and unconsolidated material consisting of particles or clasts that were formed by volcanic explosion or aerial expulsion from volcanic vent. GeMS Mafic-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Low-silica parental magmas have low viscosity and tend to form extensive sheets that have generally low relief. Includes basaltic shield volcanoes, which may become very large (for example, in Hawaii). Composed of fine-grained, dark rocks, including basaltic. GeMS Rock and sediment Various rocks and sediment, not differentiated. GeMS Colluvium and other widespread mass-movement sediment Sediment formed by slow, relatively widespread, downslope transport of particles or clasts produced by weathering and breakdown of underlying rock, sediment, and (or) soil. Composed of poorly sorted and poorly stratified material that ranges in size from clay to boulders. GeMS Sandstone Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; consists mostly of sand-sized particles, with or without fine-grained matrix of silt or clay. GeMS Fine-grained intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. GeMS Ice-contact and ice-marginal sediment, mostly fine-grained Mostly silt- and clay-sized particles or clasts, with lesser amounts of sand and gravel, derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Sediment Unconsolidated material (sediment) composed of particles deposited by gravity, air, water, or ice, or as accumulated by other natural agents operating at Earths surface such as chemical precipitation or secretion by organisms. Does not include sedimentary material directly deposited as a result of volcanic activity. GeMS Deformation-related metamorphic rock Rock derived from preexisting rocks by essentially solid-state mineralogical, chemical, or structural changes in response to strong deformation, commonly in association with marked changes in temperature, pressure, and (or) chemical environment. Generally forms in narrow, planar zones of local deformation (for example, along faults); characterized by foliation or alignment of mineral grains. Includes mylonite and cataclasite. GeMS Iron-rich sedimentary rock Sedimentary rock, in which at least half (by volume) of observed minerals are iron bearing (hematite, magnetite, limonite group minerals, siderite, iron sulfides). GeMS Felsic-composition lava flows Lateral, surficial outpourings of molten lava from vent or fissure; also, solidified bodies of rock that form when they cool. Because of their high silica content and resulting high viscosity, parental magmas tend to erupt explosively, and so these deposits are uncommon. Includes fine-grained, light-colored rock with rhyolitic, dacitic, trachytic, and latitic composition. GeMS Sandstone and mudstone Sandstone and mudstone (including shale and siltstone), in approximately equal (or unspecified) proportions. GeMS Mafic-composition air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into the air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Because of their low silica content and resulting low viscosity, parental magmas tend to erupt gently as lava flows, and so these deposits are uncommon. Includes basalt; rocks are commonly dark-colored. GeMS Intermediate-composition air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into the air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Parental magma commonly erupts from stratovolcanoes as thick lava flows but also can generate strong explosive eruptions to form pyroclastic flows. Includes rocks that are, in color and mineral composition, intermediate between felsic and mafic rocks (for example, andesite). GeMS Residual material Unconsolidated material, developed in place by weathering of underlying rock or sediment. Usually forms relatively thin surface layer that conceals unweathered or partly altered source material. Material from which soils are formed. GeMS Mostly sandstone Mostly sandstone, interbedded with other sedimentary rocks that locally may include conglomerate and finer grained clastic rocks (mudstone), carbonates, and (or) coal. GeMS Clastic sediment Sediment formed by weathering and erosion of preexisting rocks or minerals; eroded particles or clasts are transported and deposited by gravity, air, water, or ice. GeMS Water or ice Water or ice GeMS Ice-contact and ice-marginal sediment Mostly sand-, silt-, and gravel-sized particles or clasts derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Felsic-composition pyroclastic flows Hot ash, pumice, and rock fragments erupted from volcano or caldera. Material moves downslope commonly in chaotic flows; once deposited, hot fragments may compact under their own weight and weld together. Because of their high-silica content and resulting high viscosity, parental magmas tend to erupt explosively. Includes rhyolite, dacite, trachyte, latite; rocks are commonly light-colored. GeMS Fine-grained, intermediate-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Intermediate in color and in mineral composition (between felsic and mafic igneous rock). Includes andesitic rock. GeMS Mostly carbonate rock Mostly carbonate rock, interbedded with other sedimentary rock types. GeMS Regional metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. GeMS Glacial till, mostly silty Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively loamy (silty) in texture. GeMS Mudstone Sedimentary rock, composed predominantly of particles or clasts derived by erosion and weathering of preexisting rock; consists mostly of mud (that is, silt- and clay-sized particles). Includes shale and siltstone. GeMS Lower-grade metamorphic rock, of unspecified origin Rock derived from preexisting rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to relatively mild regional changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Origin of preexisting rock is mixed (for example, igneous and sedimentary) or is not known. Includes slate and phyllite. GeMS Carbonate sediment Sediment formed by biotic or abiotic precipitation from aqueous solution of carbonates of calcium, magnesium, or iron (for example, limestone, dolomite). GeMS Fine-grained, felsic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Composed mostly of light-colored minerals. Includes rhyolitic, dacitic, trachytic, and latitic rock. GeMS Rock Various rock types, not differentiated. GeMS Meta-carbonate rock Rock derived from preexisting carbonate sedimentary rocks and altered by essentially solid-state mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Characterized by recrystallization of carbonate minerals in source rock. Includes marble (for which preexisting rock was dominantly limestone or other rock composed of calcite), dolomitic marble, meta-dolostone, and meta-dolomite (for which preexisting rock contained appreciable amount of magnesium). GeMS Peat and muck Unconsolidated material, principally composed of plant remains, with lesser amounts of fine-grained clastic sediment. Deposited in water-saturated environment such as swamp, marsh, or bog. With lithification, such material becomes coal. GeMS Felsic-composition air-fall tephra Fragments of volcanic rock and lava, of various sizes, carried into air by explosions and by hot gases in eruption columns or lava fountains; known as tephra. As tephra falls to ground, with increasing distance from volcano, average size of individual rock particles and thickness of resulting deposit decrease. Because of their high silica content and resulting high viscosity, felsic-composition magmas tend to erupt explosively, readily forming pumice and volcanic ash. Composed of light-colored rocks (for example, rhyolite, dacite, trachyte, latite). GeMS Schist and gneiss, of sedimentary-rock origin Foliated rock derived from preexisting sedimentary rocks by essentially solid-state mineralogical, chemical, or structural changes in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Includes schist (characterized by such strong foliation or alignment of minerals that it readily splits into flakes or slabs) and gneiss (characterized by alternating, irregular bands of different mineral composition). Mostly formed from fine-grained material such as mudstone. GeMS Glacial till, mostly clayey Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively clayey in texture. GeMS Coarse-grained, mafic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of feldspar and dark-colored minerals. Includes gabbroic rock. GeMS Clastic sedimentary rock Sedimentary rock, composed predominantly of particles or clasts derived by erosion, weathering, or mass-wasting of preexisting rock and deposited by gravity, air, water, or ice. GeMS Volcanic mass flow Volcanic deposits formed by mass movement (for example, debris avalanches, debris flows, lahar deposits), in many cases triggered by volcanic eruption. Debris avalanches that occur on volcanoes clearly without eruptive trigger may be classified as sedimentary (for example, as Debris flows, landslides, and other localized mass-movement sediment). GeMS Coarse-grained, felsic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at some depth beneath Earths surface, thereby cooling slowly enough for mineral crystals to grow large enough to be visible to naked eye. Composed mostly of light-colored minerals (for example, feldspar, quartz). Includes granitic, syenitic, and monzonitic rock. GeMS Meta-mafic rock Rock derived from preexisting mafic rocks by essentially solid-state, mineralogical, chemical, or structural changes, in response to marked changes in temperature, pressure, deformation, and (or) chemical environment, generally at depth in Earths crust. Composed mostly of iron- and magnesium-bearing, dark-colored and (or) green minerals. Includes greenstone, amphibolite, and metagabbro. GeMS Lacustrine sediment Mostly well-sorted and well-bedded material that ranges in grain size from clay to gravel, deposited in perennial to intermittent lakes. Much of sediment is derived from material eroded and transported by streams. Includes deposits of lake-marginal beaches and deltas. GeMS Glacial till, mostly sandy Mostly unsorted and unstratified material, generally unconsolidated, deposited directly by and underneath or adjacent to glacier without subsequent reworking by meltwater. Consists of heterogeneous mixture of clay, silt, sand, gravel, and boulders, ranging widely in size and shape. Relatively sandy in texture. GeMS Fine-grained, mafic-composition intrusive igneous rock Rock that solidified from molten or partly molten material (magma) at shallow depth beneath Earths surface, thereby cooling quickly. Generally fine grained but may contain large mineral crystals (phenocrysts). Mostly found as tabular dikes or sills. Composed mostly of dark-colored minerals. Includes basaltic rock. GeMS Ice-contact and ice-marginal sediment, mostly coarse-grained Mostly sand- and gravel-sized particles or clasts, with lesser amounts of silt and clay, derived from rock or preexisting sediment that has been eroded and transported by glaciers. As glacier melted, material was deposited by running water essentially in contact with glacial ice or was transported and deposited by glacially fed streams. Includes sediment deposited into water bodies adjacent to glacier. GeMS Extrusive igneous material Molten material that was erupted onto Earths surface, fusing into rock or remaining as unconsolidated particles. Includes pyroclastic flows, air-fall tephra, lava flows, and volcanic mass flows. GeMS IndentedName Name with addition of leading spaces to help show rank within a hierarchical list. GeMS Unrepresentable domain Definition Plain-language definition. GeMS Unrepresentable domain MapUnitPolys Polygons that record distribution of map units (including water, snowfields, glaciers, and unmapped area) on the particular map horizon. In the original file geodatabase, this dataset is found within the GeologicMap feature dataset. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Shape Internal geometry object ESRI Unrepresentable domain Shape_Length Internal feature length, double ESRI Unrepresentable domain Shape_Area Internal feature area, double ESRI Unrepresentable domain MapUnit Short plain-text identifier of the map unit. Foreign key to DescriptionOfMapUnits table. GeMS Qv Volcanic rocks This Report PZpCm Metamorphic rocks This Report Qpm Peat and muck This Report Psm Sedimentary rocks This Report MZPZu Undifferentiated Mesozoic and Paleozoic rocks This Report Yms Sedimentary and metasedimentary rocks This Report Ymg Mafic intrusive rocks This Report Qg Glacial till, undifferentiated This Report Kse Sedimentary rocks This Report Xmsq Quartzite This Report Zg Granitic rocks This Report MZgr Granitic rocks This Report water Water and ice This Report TpCim Igneous and metamorphic rocks of unspecfied age This Report Xi Igneous and metaigneous rocks This Report Yl Igneous rocks This Report Qai Intermediate alluvial sediment This Report Ti Intrusive rocks This Report Xig Granitic rocks This Report PZpCmg Metaigneous rocks This Report Ql Lacustrine sediment This Report TRs Sedimentary rocks This Report MZim Undifferentiated igneous and metamorphic rocks This Report Ai Intrusive rocks This Report PNsm Sedimentary rocks This Report MZms Sedimentary and metasedimentary rocks This Report PZpCu Undifferentiated Paleozoic to Precambrian rocks This Report Zm Metamorphic and igneous rocks This Report Ds Sedimentary rocks This Report Qls Debris flows, landslides, and other localized mass-movement sediment This Report Pse Sedimentary rocks This Report mTs Sedimentary rocks This Report paTs Sedimentary rocks This Report PNs Sedimentary rocks This Report Dsme Sedimentary rocks This Report Ks Sedimentary rocks This Report Ss Sedimentary rocks This Report PZu Undifferentiated Paleozoic rocks This Report TMZum Ultramafic rocks This Report CAs Sedimentary rocks This Report TMZu Undifferentiated Tertiary and Mesozoic rocks This Report oTs Sedimentary rocks This Report Ksl Sedimentary rocks This Report PZpCg Igneous rocks This Report Qp Playa sediment This Report paTKs Clastic sedimentary rocks This Report scz Shear zone rocks This Report Xms Metasedimentary rocks This Report Qa Alluvial sediment, undifferentiated This Report ngTs Sedimentary rocks This Report Qcsr Carbonate sediment and evaporite This Report Dsl Sedimentary rocks This Report Os Sedimentary rocks This Report Mzgm Mafic intrusive rocks This Report Ymc Marble and calc-silicate rocks This Report Tva Intermediate volcanic rocks This Report Xu Undifferentiated Paleoproterozoic rocks This Report Tvs Volcaniclastic rocks This Report QTv Volcanic rocks This Report Qu Quaternary units, undifferentiated This Report Ymss Clastic sedimentary rocks This Report MZum Ultramafic rocks This Report Ms Sedimentary rocks This Report PZm Undifferentiated metamorphic rocks This Report Qay Young alluvial sediment This Report Qcz Coastal zone sediment This Report Cs Sedimentary rocks This Report PNse Sedimentary rocks This Report TMZs Clastic sedimentary rocks This Report PZum Ultramafic rocks This Report Zms Metasedimentary rocks This Report MZm Metamorphic rocks This Report PPNs Sedimentary rocks This Report CAm Metamorphic rocks This Report Qgo Older glacial till This Report TMZg Intrusive rocks This Report Qic Ice-contact and ice-marginal sediment This Report Tvm Mafic volcanic rocks This Report MZv Volcanic rocks This Report QTs Clastic sediments, undifferentiated This Report Xmss Slate and sandstone This Report Zs Clastic sedimentary rocks This Report Psl Sedimentary rocks This Report Qe Eolian sediment This Report Ygg Granitic rocks This Report pC Undifferentiated Precambrian rocks This Report Aum Ultramafic rocks This Report pgTs Sedimentary rocks This Report eTs Sedimentary rocks This Report plTs Sedimentary rocks This Report Js Sedimentary rocks This Report Au Undifferentiated Archean rocks This Report Xif Iron formation This Report Aig Granitic rocks This Report Xim Gabbro and mafic lava flows This Report PZi Paleozoic igneous and metaigneous rocks This Report PRu Undifferentiated Proterozoic rocks This Report CAZms Metasedimentary rocks This Report Qm Marine sediment This Report Ps Sedimentary rocks This Report Tvr Felsic volcanic rocks This Report Qs Clastic sediments, undifferentiated This Report af Artificial fill This Report PNsl Sedimentary rocks This Report unmapped Unmapped areas This Report Tu Tertiary rocks This Report Tvi Extrusive igneous rocks This Report Oes Sedimentary rocks This Report Ams Metasedimentary rocks This Report PZpCms Metasedimentary rocks This Report Zmg Metaigneous rocks This Report Yu Undifferentiated Mesoproterozoic rocks This Report PRum Ultramafic rocks This Report Olms Sedimentary rocks This Report Qico Older ice-contact and ice-marginal sediment This Report PZms Sedimentary and metasedimentary rocks This Report Ts Sedimentary rocks This Report MZvs Volcaniclastic rocks This Report PZpCum Ultramafic rocks This Report Qao Old alluvial sediment This Report Aif Iron formation This Report IdentityConfidence Confidence that feature is correctly identified. GeMS questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain DataSourceID Source of data; foreign key to table DataSources. GeMS 1032 Haley, B.R., Glick, E.E., Bush, W.V., Clardy, B.F., Stone, C.G., Woodward, M.B., and Zachry, D.L., 1993, Geologic map of Arkansas: U.S. Geological Survey, scale 1:500,000. This report 674 Mudrey Jr., M.G., Brown, B.A., Greenberg, J.K., 1982, Bedrock Geologic Map of Wisconsin: Wisconsin Geological and Natural History Survey Map M-078, scale 1:1,000,000. This report 1340 Fullerton, D.S., Cowan, W.R., Savon, W.D., Goldthwait, R.P., Ferrand, W.R., Muller, E.H., Bahling, R.E., and Stravers, J.A., compilers; Fullerton, D.S., and Richmond, G.M., eds.; 1991, Quaternary Geologic Map of the Lake Erie 4° x 6° Quadrangle, United States and Canada, U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-17), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-17/ This report 1624 Porter, K.W., and Wilde, E.M., 2001, Geologic map of the Zortman 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 438, 16 p., 1 sheet, scale 1:100,000. This report 1542 Reynolds, M.W., and Brandt, T.R., 2005, Geologic map of the Canyon Ferry Dam 30' x 60' quadrangle, west-central Montana: U.S. Geological Survey Scientific Investigations Map 2860, 32 p., 3 sheets, scale 1:100,000. . This report 879 Spoljaric, N. and Jordan, R.R., 1966, Generalized geologic map of Delaware: Delaware Geological Survey, Special Publication 4, scale 1:297,500. This report 1595 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Powderville 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 429, 8 p., 1 sheet, scale 1:100,000. This report 602 Dalton, Richard F., Monteverde, Donald H., Sugarman, Peter J., and Volkert, Richard A., compilers. Bedrock Geologic Map of New Jersey 2014. New Jersey Geological and Water Survey. 2014, Scale 1:250,000, 5 cross-sections. This report 1613 Berg, R.B., 2002, Geologic map of the Valier 30' x 60' quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Open-File Report 453, 10 p., 1 sheet, scale 1:100,000. This report 1582 Lopez, D.A., 2002, Geologic map of the Lonesome Lake 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 446, 13 p., 1 sheet, scale 1:100,000. This report 838 New Mexico Bureau of Geology and Mineral Resources, 2003, Geologic map of New Mexico: New Mexico Bureau of Geology and Mineral Resources Geologic Map, scale 1:500,000 This report 1619 Wilde, E.M., and Porter, K.W., 2002, Geologic map of the Winifred 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 437, 13 p., 1 sheet, scale 1:100,000. This report 1530 Vuke, S.M., Berg, R.B., Colton, R.B., and O'Brien, H.E., 2002, Geologic map of the Belt 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 450, 19 p., 2 sheets, scale 1:100,000. This report 1589 Berg, R.B., and Lonn, J.D., 1996, Preliminary geologic map of the Nez Perce Pass 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Open-File Report 339, 9 p., 1 sheet, scale 1:100,000. This report 921 Caldwell, D.H., Erwin, R.B., and Woodward, H.P., 1968, Geologic Map of West Virginia: West Virginia Geological and Economic Survey Map 1, scale 1:250,000. This report 1414 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Southern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 856 Heran, W.D., Green, G.N., and Stoeser, D.B., A digital geologic map database for Oklahoma: U.S. Geological Survey Open-File Report 03-247, scale 1:250,000. This report 1614 Lonn, J.D., and McFaddan, M.D., 1999, Geologic map of the Montana part of the Wallace 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 388, 15 p., 2 sheets, scale 1:100,000. This report 929 Clayton, L., Moran, S.R., Bluemle, J.P., and Carlson, C.G., 1980, Geologic map of North Dakota: U.S. Geological Survey, scale 1:500,000 This report 1563 Vuke, S.M., Colton, R.B., and Fullerton, D.S., 2002, Geologic map of the Great Falls North 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 459, 13 p., 1 sheet, scale 1:100,000. This report 591 Burchett, R.R., 1986, Geologic bedrock map of Nebraska: Nebraska Conservation and Survey Division Geologic Maps and Charts 1, scale 1:1000,000 This report 1626 Vuke, S.M., Porter, K.W., Lonn, J.D., and Lopez, D.A., 2007, Geologic map of Montana [Earth surface version]: Montana Bureau of Mines and Geology Geologic Map 62, scale 1:500,000 This report 1309 Gray, H.H., 1989, Quaternary geologic map of Indiana: Indiana Geological Survey, Miscellaneous Map 49, scale 1:500,000 This report 652 Horton, J.W., Jr., and Dicken, C.L., 2000, Preliminary geologic map of the Appalachian Piedmont and Blue Ridge, South Carolina segment: U.S. Geological Survey Open-File Report 01-298, scale 1:500,000 This report 1574 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of Kalispell 1 x 2 degree quadrangle, Montana and Alberta, British Columbia: United States Geological Survey USGS Miscellaneous Geologic Investigation 2267, 2 sheets, scale 1:250,000. This report 1560 Berg, R.B., Lonn, J.D., and Locke, W.W., 1999, Geologic map of the Gardiner 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 387, 11 p., 1 sheet, scale 1:100,000. This report 1020 Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., 2000, Geologic Map of Arizona: Arizona Geological Survey, Map 35, scale 1:1,000,000. This report 1566 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2000, Geologic map of the Hardin 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 57, 1 sheet, scale 1:100,000. This report 1587 Lewis, R.S., 1998, Preliminary geologic map of the Montana part of the Missoula West 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 373, 20 p., 1 sheet, scale 1:100,000. This report 1583 Bergantino, R.N., 1999, Geologic and structure contour maps of the Malta 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 389, 4 p., 2 sheets, scale 1:100,000. This report 1592 Lonn, J.D., Smith, L.N., and McCulloch, R.B., 2007, Geologic map of the Plains 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 554, 43 p., 1 sheet, scale 1:100,000. This report 1597 Wilde, E.M., and Smith, L.N., 2003, Geologic and structure contour map of the Richey 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 475, 9 p., 1 sheet, scale 1:100,000. This report 1564 Vuke, S.M., 2000, Geologic map of the Great Falls South 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 407, 18 p., 1 sheet, scale 1:100,000. This report 1545 Vuke, S.M., Hargrave, P.A., and Smith, L.N., 2011, Geologic map of the Circle 30' x 60' quadrangle Dawson, McCone, and Prairie counties, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 597, 1 sheet, scale 1:100,000. This report 970 Milstein, R.L. compiler, 1987, Bedrock geology of southern Michigan: Michigan Department of Natural Resources Geological Publication BG-01, scale 1:500,000. This report 1569 Sholes, M.A., and Bergantino, R.N., 2002, Geologic map of the Havre 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 467, 8 p., 1 sheet, scale 1:100,000. This report 1575 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Lame Deer 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 428, 8 p., 1 sheet, scale 1:100,000. This report 1536 Miller, F.K., and Burmester, R.F., 2004, Geologic map of the Bonner's Ferry 30' X 60' quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Field Studies Map MP-2426, scale 1:100,000. This report 882 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 1608 Harrison, J.E., Whipple, J.W., and Lidke, D.J., 1998, Geologic map of the western part of the Cut Bank 1 x 2 degree quadrangle, northwestern Montana: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2593, 1 sheet, scale 1:250,000. This report 1102 Hardeman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic Map of Tennessee: Tennessee Division of Geology State Geologic Map, scale 1:250,000 This report 1286 Muller, E.H., Cadwell, D.H., Connally, G.G., Young, R.A., 1986, Surficial geologic map of New York; Finger Lakes sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1558 Wilde, E.M., and Bergantino, R.N., 2004, Geologic and structure contour map of the Fort Peck Lake East 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 498, 10 p., 1 sheet, scale 1:100,000. This report 1577 Porter, K.W., and Wilde, E.M., 1993, Geologic map of the Lewistown 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 308, 22 p., 1 sheet, scale 1:100,000. This report 1561 Bergantino, R.N., 1999, Geologic map of the Glasgow 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 390, 4 p., 2 sheets, scale 1:100,000. This report 1113 Barnes, V.E. (project supervisor), Hartmann, B.A., and Scranton, D.F. (cartography), 1992, Geologic Map of Texas: The University of Texas at Austin, Texas Bureau of Economic Geology, scale 1:500,000. This report 1296 Combination of multiple sources: Cadwell, D.H., Dineen, R.J., Connally, G.G., Fleisher, P.J., and Rich, J.L., 1987, Surficial geologic map of New York; Hudson-Mohawk sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets|Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 1611 Harrison, J.E., Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Map I-1509-A, 2 sheets, scale 1:250,000. This report 1287 Cadwell, D.H., Connally, G.G., Fleisher, P.J., Muller, E.H., 1988, Surficial geologic map of New York; Niagara sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1591 Lonn, J.D., McDonald, C., Lewis, R.S., Kalakay, T.J., O'Neill, J.M., Berg, R.B., and Hargrave, P., 2003, Geologic map of the Philipsburg 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 483, 1 sheet, scale 1:100,000. This report 1233 Miller, R.A., Maher, S.W., Copeland, Jr., C.W., Rheams, K.F., Neathery, T.L., Gilliland, W.A., Friddell, M.S., Van Nostrand, A.K., Wheeler, W.H., Holbrook, D.F., and Bush, W.V., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1988, Quaternary geologic map of the Lookout Mountain 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NI-16), scale 1:1,000,000 [Bush, C.A., Digital edition, 2013], https://pubs.usgs.gov/imap/i-1420/ni-16/ This report 1605 Mudge, M.R., Earhart, R.L., Whipple, J.W., and Harrison, J.E., 1983, Geologic and structure maps of the Choteau 1 x 2 degree quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Montana Atlas 3-A, 2 sheets, scale 1:250,000. This report 1411 This Report This report 1590 Bergantino, R.N., 2001, Geologic and structure contour map of the Opheim 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 440, 6 p., 1 sheet, scale 1:100,000. This report 1618 Vuke, S.M., Wilde, E.M., Colton, R.B., and Stickney, M.C., 2003, Geologic map of the Wibaux 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 465, 11 p., 1 sheet, scale 1:100,000. This report 644 Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., Skehan, J.W., and Mosher, S., 1994, Bedrock geologic map of Rhode Island: Rhode Island Geological Survey Rhode Island Map Series Map 1, scale 1:100,000. This report 1544 Berg, R.B., 2008, Geologic map of the Choteau 30' x 60' quadrangle, north central Montana: Montana Bureau of Mines and Geology Open-File Report 571, 16 p., 1 sheet, scale 1:100,000. This report 1601 Lonn,J.D., Elliott, C.G., Lewis, R.S., Burmester, R.F., McFaddan, M.D., Stanford, L.R., and Jänecke, S.U., 2019, Geologic map of the Montana part of the Salmon 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Geologic Map 75, 28 p., 1 sheet, scale 1:100,000. This report 946 Osberg, P.H., Hussey, A.M. and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Geologic Map Series BGMM, scale 1:500,000. This report 1306 Minnesota Geologic Survey, D-01 database of Surficial Geology Of Minnesota, https://mngs-umn.opendata.arcgis.com/apps/UMN::d-01-surficial-geology-of-minnesota/about, accessed November 1st, 2023 This report 1531 Porter, K.W., Wilde, E.M., and Vuke, S.M., 1996, Preliminary geologic map of the Big Snowy Mountains 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 341, 16 p., 1 sheet, scale 1:100,000. This report 1594 Harrison, J.E., Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Map I-1509-A, 2 sheets, scale 1:250,000. This report 1621 Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1803-H, 1 sheet, scale 1:250,000. This report 1620 Porter, K.W., and Wilde, E.M., 1993, Geologic map of the Winnett 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 307, 16 p., 2 sheets, scale 1:100,000. This report 1283 Cadwell, D.H., Connally, G.G., Dineen, R.J., Fleisher, P.J., Fuller, M.L., Les Sirkin, M.L., and Wiles, G.C., 1989, Surficial geologic map of New York; Lower Hudson sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1572 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2003, Geologic map of the Hysham 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 486, 10 p., 1 sheet, scale 1:100,000. This report 935 Gray, H.H., Ault, C.H., and Keller, S.J., 1987, Bedrock geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 48, scale 1:500,000 This report 1141 Gadd, N.R., Veillete, J.J., Fullerton, D.S., Wagner, P.W., and Chapman, W.F., compilers; Fullerton, D.S., ed., 1993, Quaternary Geologic Map of the Ottawa 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-18), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-18/ This report 1609 Lopez, D.A., 2002, Geologic map of the Sweet Grass Hills 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 443, 18 p., 1 sheet, scale 1:100,000. This report 1346 Borns, H.W., Gadd, N.R., LaSalle, Pierre, Martineau, Ghismond, Chauvin, Luc, Fullerton, D.S., Fulton, R.J., Chapman, W.F., Wagner, W.P., and Grant, D.R., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1987, Quaternary Geologic Map of the Quebec 4°x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-19/ This report 1388 Gray, H.H., Bleuer, N.K., Lineback, J.A., Swadley, W.C., Richmond, G.M., Miller, R.A., Goldthwait, R.P., and Ward, R.A. compilers; Richmond, G.M., Fullerton, D.S., and Bush, C.A., eds., 1991, Quaternary geologic map of the Louisville 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-16), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-16/ This report 1382 Cleaves, E.T., Glaser, J.D., Howard, A.D., Johnson, G.H., Wheeler, W.H., Sevon, W.D., Sheldon, J., Owens, J.P., Peebles, P.C., compilers; Richmond, G.M., and Fullerton, D.S., Weide, D.L., eds., 1987, Quaternary geologic map of the Chesapeake Bay 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-18), [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nj-18/ This report 1600 Wilde, E.M., and Porter, K.W., 2000, Geologic map of the Roundup 30' X 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 404, 14 p., 1 sheet, scale 1:100,000. This report 1617 Bergantino, R.N., 2003, Geologic and structure contour map of the Whitewater 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 471, 6 p., 1 sheet, scale 1:100,000. This report 1604 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic and structure contour map of the Scobey 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 360, 5 p., 1 sheet, scale 1:100,000. This report 1221 Whitfield, J.W., Ward, R.A., Denne, J.E., Holbrook, D.F., Bush, W.V., Lineback, J.A., Luza, K.V., Jensen, K.M., and Fishman, W.D., compilers, Richmond, G.M. and Weide, D.L., eds., 1994, Quaternary geologic map of the Ozark Plateau 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-15), scale 1:1,000,000 [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-15/ This report 1616 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 1603 Lewis, R.S., Burmester, R.F., Breckenridge, R.M., McFaddan, M.D., and Phillips, W.M., 2008, Preliminary geologic map of the Sandpoint 30' x 60' quadrangle, Idaho and Montana, and the Idaho part of the Chewelah 30' x 60' quadrangle: Idaho Geological Survey, Digital Web Map DWM-94, scale 1:100,000. This report 1166 Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, scale 1:500,000. This report 1091 Thompson, D.E., 2011, Geologic Map of Mississippi; after Bickler, A.R., 1969, Geologic Map of Mississippi: Mississippi Department of Environmental Quality, Office of Geology, scale 1:500,000. This report 1408 Walker, G.W., and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000 This report 1573 Wilde, E.M., and Vuke, S.M., 2004, Geologic map of the Jordan 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 514, 8 p., 1 sheet, scale 1:100,000. This report 1576 Ruppel, E.T., 1998, Geologic map of the eastern part of the Leadore 30' x 60' quadrangle, Montana and Idaho: Montana Bureau of Mines and Geology Open-File Report 372, 9 p., 1 sheet, scale 1:100,000. This report 1570 O'Neill, J.M., and Christiansen, R.L., 2002, Geologic map of the Hebgen Lake 30' x 60' quadrangle, Beaverhead, Madison, and Gallatin counties, Montana, Park and Teton counties, Wyoming, and Clark and Fremont Counties, Idaho: Montana Bureau of Mines and Geology Open-File Report 464, 21 p., 1 sheet, scale 1:100,000. This report 1550 Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1803-H, 1 sheet, scale 1:250,000. This report 1055 Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic map of Georgia: Georgia Geological Survey, scale 1:500,000 This report 1128 Howard, A.D., Behling, R.E., Wheeler, W.H., Daniels, R.B., Swadley, W.C., Goldthwait, R.P., Fullerton, D.S., Sevon, W.D., Miller, R.A., compilers; Richmond, G.M., Fullerton, D.S., Christiansen, A.C., eds., 1991, Quaternary geologic map of the Blue Ridge 4° x 6° quadrangle, United States: Quaternary Geologic Atlas of the United States Map I-1420 (NJ-17), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-17/ This report 1578 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 1534 Lopez, D.A., 2000, Geologic map of the Billings 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 59, 1 sheet, scale 1:100,000. This report 1571 Harrison, J.E., Whipple, J.W., and Lidke, D.J., 1998, Geologic map of the western part of the Cut Bank 1 x 2 degree quadrangle, northwestern Montana: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2593, 1 sheet, scale 1:250,000. This report 1185 Hallberg, G.R., Lineback, J.A., Mickelson, D.M., Knox, J.C., Goebel, J.E., Hobbs, H.C., Whitfield, J.W., Ward, R.A., Boellstorff, J.D., Swinehart, J.B., and Dreeszen, V.H., compilers; Richmond, G.M., Fullerton, D.S., and Christiansen, A.C., eds., 1994, Quaternary geologic map of the Des Moines 4° x 6° Quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-15), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-15/ This report 1602 Wilde, E.M., and Vuke. S.M., 2004, Geologic map of the Sand Springs 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 515, 8 p., 1 sheet, scale 1:100,000. This report 896 Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, Map A-1, scale 1:500,000. This report 1294 Combination of multiple sources: Cadwell, D.H., Connally, G.G., Dineen, R.J., Fleisher, P.J., Fuller, M.L., Les Sirkin, M.L., and Wiles, G.C., 1989, Surficial geologic map of New York; Lower Hudson sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets|Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 1632 Schuster, J.E., 2005, Geologic map of Washington State: Washington Division of Geology and Earth Resources, Geologic Map GM-53, scale 1:500,000. This report 1655 Cleaves, E.T., Edwards, J., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Scale 1:250,000. This report 1645 Osborne, W.E., Szabo, M.W., Copeland Jr., C.W., and Neathery, T.L., 1989, Geologic Map of Alabama: Geological Survey of Alabama Special Map 221, scale 1:500,000. This report 1585 Vuke, S.M., Luft, S.J., Colton, R.B., and Heffern, E.L., 2001, Geologic map of the Miles City 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 426, 11 p., 1 sheet, scale 1:100,000. This report 1599 Bergantino, R.N., Porter, K.W., and Hearn Jr., B.C., 2002, Geologic map of the Rocky Boy 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 451, 16 p., 1 sheet, scale 1:100,000. This report 835 Stewart, J.H, and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey, scale 1:500,000 This report 1553 Vuke, S.M., Wilde, E.M., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Ekalaka 30' x 60' quadrangle, eastern Montana and adjacent North and South Dakota: Montana Bureau of Mines and Geology Open-File Report 430, 11 p., 1 sheet, scale 1:100,000. This report 1581 Vuke, S.M., Wilde, E.M., Lopez, D.A., and Bergantino, R.N., 2000, Geologic map of the Lodge Grass 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 56, 1 sheet, scale 1:100,000. This report 962 Reed, R.C., and Daniels, J., compilers., 1987, Bedrock geology of northern Michigan: Michigan Department of Natural Resources, Geological Survey Division, scale 1:500,000. This report 1562 Vuke, S.M., and Colton R.B., 1998, Geologic map of the Glendive 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 371, 8 p., scale 1:100,000. This report 1543 Lopez, D.A., 2002, Geologic map of the Chester 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 445, 11 p., 1 sheet, scale 1:100,000. This report 632 Berg, T.M., Edmunds, W.E., Geyer, A.R., Glover, A.D., Hoskins, D.M., MacLachlan, D.B., Root, S.I., Sevon, W.D., and Socolow, A.A. 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey Map 1, Scale 1:250,000. This report 1598 McDonald, C., Lopez, D.A., Berg, R.B., and Gibson, R.I., 2005, Preliminary geologic map of the Ringling 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 511, 27 p., 1 sheet, scale 1:100,000. This report 1533 Evans, K.V ., and Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series I-2765, 1 sheet, scale: 1:100,000. This report 55 Ward, R.A., 1982, Geology of the Jefferson City quadrangle, Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-70-GI, scale 1:24000. This report 1540 Scarberry, K.C., Elliott, C.G., and Yakovlev, P.V., 2019, Geology of the Butte North 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 715, 30 p., 1 sheet, scale 1:100,000. This report 983 Jirsa, M.A., Boerboom, T.J., Chandler, V.W., Mossler, J.H., Runkel, A.C., and Setterholm, D.R., 2011, Geologic map of Minnesota, Bedrock geology: Minnesota Geological Survey State Map Series S-21, scale 1:500,000. This report 1557 Berg, R.B., and Vuke, S.M., 2002, Geologic map of the Fort Benton 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 460, 13 p., 1 sheet, scale 1:100,000. This report 1295 Combination of multiple sources: Muller, E.H., Cadwell, D.H., Connally, G.G., Young, R.A., 1986, Surficial geologic map of New York; Finger Lakes sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets|Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 1666 Jennings, C.W., Gutierrez, C., Bryant, W., Saucedo, G., and Wills, C., 2010, Geologic Map of California: California Geological Survey Geologic Data Map GDM-2.2010 This report 871 Love, J.D., and Christiansen, A.C., 1985, Geologic map of Wyoming: U.S. Geological Survey, scale 1:500,000 This report 1567 Bergantino, R.N., Patton, T.W., and Sholes, M.A., 2003, Geologic and structure contour map of the Harlem 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 468, 7 p., 1 sheet, scale 1:100,000. This report 1548 Berg, R.B., 2002, Geologic map of the Cut Bank 30' x 60' quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Open-File Report 454, 10 p., 1 sheet, scale 1:100,000. This report 1615 Reynolds, M.W., and Brandt, T.R., 2007, Preliminary geologic map of the White Sulphur Springs 30' x 60' quadrangle, Montana: U.S. Geological Survey Open-File Report 2006-1329, scale 1:100,000. This report 1046 Scott, T.M., Campbell, K.M., Rupert, F.R., Arthur, J.D., Green, R.C., Means, G.H., Missimer, T.M., Lloyd, J.M., Yon, J.W. and Duncan, J.G., 2001, Geologic map of the state of Florida: Florida Geological Survey, Map Series 146, scale 1:1,000,000 (revised 2006). This report 1547 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Culbertson 30' x 60' quadrangle, northeastern Montana and northwestern North Dakota: Montana Bureau of Mines and Geology Open-File Report 359, 5 p., 1 sheet, scale 1:100,000. This report 623 Slucher, E.R., Swinford, E.M., Larsen, G.E., Schumacher, G.A., Shrake, D.L., Rice, C.L., Caudill, M.R., Rea, R.G., and Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey, Map BG-1, scale 1:500,000. This report 1073 Noger, M.C., 1988, Geologic map of Kentucky: U.S. Geological Survey, scale 1:500,000. This report 1546 Lopez, D.A., 2002, Geologic map of the Conrad 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 444, 11 p., 1 sheet, scale 1:100,000. This report 275 Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 614 Rickard, L.V., Isachsen, Y.W., and Fisher, D.W., 1970, Geologic Map of New York: New York State Museum and Science Service Map and Chart Series 15 (Explanatory sheet published in 1971), 5 sheets, scale 1:250,000 This report 1612 Reynolds, M.W., and Brandt, T.R., 2006, Preliminary geologic map of the Townsend 30' x 60' quadrangle, Montana: U.S. Geological Survey Open-File Report 2006-1138, scale 1:100,000. This report 1607 Mudge, M.R., Earhart, R.L., Whipple, J.W., and Harrison, J.E., 1983, Geologic and structure maps of the Choteau 1 x 2 degree quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Montana Atlas 3-A, 2 sheets, scale 1:250,000. This report 1596 Lopez, D.A., 2001, Preliminary geologic map of the Red Lodge 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 423, 17 p., 1 sheet. This report 1549 Vuke, S.M., 2014, Preliminary geologic map of the Dearborn River 30' x 60' quadrangle, west-central Montana: Montana Bureau of Mines and Geology Open-File Report 649, 9 p., 1 sheet, scale 1:100,000. This report 1537 Vuke, S.M., Lonn, J.D., Berg, R.B., and Schmidt, C.J., 2014, Geologic map of the Bozeman 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Open-File Report 648, 44 p., 1 sheet, scale 1:100,000. This report 1554 McDonald, C., Mosolf, J.G., Vuke, S.M., and Lonn, J.D., 2020, Geologic map of the Elliston 30? x 60? quadrangle, west-central Montana: Montana Bureau of Mines and Geology Geologic Map 77, 34 p., 1 sheet, scale 1:100,000. This report 1527 Vuke, S.M., Wilde, E.M., Colton, R.B., and Bergantino, R.N., 2001, Geologic map of the Alzada 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 433, 9 p., 1 sheet, scale 1:100,000. This report 1316 This Report This report 1173 Swinehart, J.B., Dreeszen, V.H., Richmond, G.M., Tipton, M.J., Bretz, Richard, Steece, F.V., Hallberg, G.R., and Goebel, J.E., compilers; Richmond, G.M., ed., 1994, Quaternary geologic map of the Platte River 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-14), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-14/ This report 1526 Digital database of the Montana state geologic map, submitted to STATEMAP in GeMS This report 1376 Hartshorn, J.H., Thompson, W.B., Chapman, W.F., Black, R.F., Richmond, G.M., Grant, D.R., and Fullerton, D.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1991, Quaternary Geologic Map of the Boston 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420(NK-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nk-19/ This report 1555 Kellogg, K.S., and Williams, V.S., 2006, Geologic map of the Ennis 30' x 60' quadrangle, Madison and Gallatin counties, Montana, and Park County, Wyoming: Montana Bureau of Mines and Geology Open-File Report 529, 27 p., 1 sheet, scale 1:100,000. This report 1284 Cadwell, D.H., Dineen, R.J., Connally, G.G., Fleisher, P.J., and Rich, J.L., 1987, Surficial geologic map of New York; Hudson-Mohawk sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1552 Skipp, Betty, Janecke, S.U., 2004, Geologic map of the Montana part of the Dubois 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 490, 12 p., 1 sheet, scale 1:100,000. This report 1095 Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic map of South Dakota: South Dakota Geological Survey General Map G-10, scale 1:500,000. This report 1588 Porter, K.W., and Wilde, E.M, 1999, Geologic map of the Musselshell 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 386, 22 p., 1 sheet, scale 1:100,000. This report 908 Virginia Division of Mineral Resources, 1993, Geologic map of Virginia, Virginia Division of Mineral Resources, series unknown, 1:500,000. This report 848 North Carolina Geological Survey, 1985, Geologic map of North Carolina: North Carolina Geological Survey General Geologic Map, scale 1:500,000. This report 1160 Lineback, J.A., Bleuer, N.K., Mickelson, D.M., Ferrand, W.R., and Goldthwait, R.P., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1983, Quaternary geologic map of the Chicago 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-16/ This report 1285 Cadwell, D.H., et al., 1991, Surficial geologic map of New York; Adirondack sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 1551 Bergantino, R.N., 2001, Geologic map of the Dodson 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 439, 9 p., 1 sheet, scale 1:100,000. This report 1400 Thompson, Woodrow B., and Borns, Harold W., Jr. (editors), 1985, Surficial geologic map of Maine: Maine Geological Survey, 42" x 52" color map, scale 1:500,000. Maine Geological Survey Maps. 15. http://digitalmaine.com/mgs_maps/15 This report 940 Witzke, B.J., Anderson, R.R., and Pope, J.P., 2010, Bedrock Geologic Map of Iowa: Iowa Geological Survey Open-File Map OFM-2010-01, scale 1:500,000. This report 1209 Goebel, J.E., Mickelson, D.M., Ferrand, W.R., Clayton, Lee, Knox, J.C., Cahow, Adam, Hobbs, H.C., Walton, M.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1983, Quaternary Geologic Map of the Minneapolis 4° x 6° Quadrangle, United States: U.S. Geological Survey iscellaneous Investigations Series Map I-1420(NL-15), scale 1:1,000,000, [Digital edition, 2007], https://pubs.usgs.gov/imap/i-1420/nl-15/ This report 1528 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2003, Geologic map of the Angela 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 485, 10 p., 1 sheet, scale 1:100,000. This report 226 Stewart, Dan, McManomy, Lyle [McManamy], and Amos, Dewey, 1981, Geology of the Advance, Bell City, Bloomfield, Clines Island, Essex, and Dexter quadrangles, MO. [7.5' quadrangles]; Missouri Geological Survey, Open-File Map, OFM-81-52-GI, scale 1:62500. This report 1580 Berg, R.B., Lopez, D.A., and Lonn, J.D., 2000, Geologic map of the Livingston 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 406, 21 p., 1 sheet, scale 1:100,000. This report 1586 Lonn, J.D., McDonald, C., Sears, J.W., and Smith, L.N., 2010, Geologic map of the Missoula East 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 593, 2 sheets, scale 1:100,000. This report 1035 Tweto, Ogden, 1979, Geologic map of Colorado: U.S. Geological Survey, scale 1:500,000 This report 1529 Vuke, S.M., Wilde, E.M., Colton, R.B., and Stickney, M.C., 2001, Geologic map of the Baker 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 427, 9 p., 1 sheet, scale 1:100,000. This report 1556 Vuke, S.M., Bergantino, R.N., Colton, R.B., Wilde, E.M., and Heffern, E.L., 2001, Geologic map of the Forsyth 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 425, 11 p., 1 sheet, scale 1:100,000. This report 1291 This Report This report 1532 Lopez, D.A., 2000, Geologic map of the Big Timber 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 405, 17 p., 1 sheet, scale 1:100,000. This report 1320 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Northern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 1297 Combination of multiple sources: Cadwell, D.H., et al., 1991, Surficial geologic map of New York; Adirondack sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets|Jackson, R.L, and Doctor, D.H., 2023, A geodatabase representing a compilation of Cadwell, D.H., and others, 1991, Surficial Geology of New York; New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets.: U.S. Geological Survey data release, https://doi.org/10.5066/P9KM842E This report 1065 Kansas Geological Survey, 2008, Surficial Geology of Kansas: Kansas Geological Survey, Map M-118, scale 1:500,000 This report 2 Starbuck, E.A., 2017, Geologic map of Missouri, 2017; Missouri Geological Survey, GM-02-2017, scale 1:500000. This report 1610 Vuke, S.M., and Colton, R.B., 2003, Geologic map of the Terry 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 477, 9 p., 1 sheet, scale 1:100,000. This report 1281 Fullerton, D.S., Sevon, W.D., Muller, E.H., Judson, Sheldon, Black, R.F., Wagner, P.W., Hartshorn, J.H., Chapman, W.F., and Cowan, W.D., compilers; Fullerton, D.S., ed., 1992, Quaternary Geologic Map of the Hudson River 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-18), scale 1:1,000,000, [Digital edition, 2005], https://pubs.usgs.gov/imap/i-1420/nk-18/ This report 1669 Pavey, R. R.; Goldthwait, R. P.; Brockman, S. C., Hull, D. N., Swinford, E. M., and Van Horn, R.G, 1999, Quaternary Geology of Ohio: Ohio Division of Geological Survey, Map No. 2, scale 1:500,000 This report 1539 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Broadus 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 432, 13 p., 1 sheet, scale 1:100,000. This report 1197 Holbrook, D.F., Gilliland, W.A., Luza, K.V., Pope, D.E., Wermund, E.G., Miller, R.A., Bush, W.V., Jensen, K.N., and Fishman, W.D., compilers; Richmond, G.M., Fullerton, D.S., and Weide, D.L., eds., 1990, Quaternary geologic map of the Vicksburg 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map-1420 (NI-15), scale 1:1,000,000, [Bush, C.A., Digital edition, 2012], https://pubs.usgs.gov/imap/i-1420/ni-15/ This report 863 Willoughby, H. and Nystrom, 2005, Generalized geologic map of South Carolina (original compilation by Maybin and Nystrom, 1997): South Carolina Geological Survey Geologic Map GGMS-1, scale 1:1,000,000. Version 2.0 revised 04/2006. This report 1565 Lonn, J.D., and Berg, R.B., 1996, Geologic map of the Hamilton 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 340, 8 p., 1 sheet, scale 1:100,000. This report 1239 Farrand, W.R., Mickelson, D.M., Cowan, W.R., and Goebel, J.E., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1984, Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nl-16/ This report 1584 Vuke, S.M., and Wilde, E.M., 2004, Geologic map of the Melstone 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 513, 12 p., 1 sheet, scale 1:100,000. This report 1084 Snead, J.I., and McCulloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey Geologic Map 5, scale 1:500,000. This report 887 Kolata, D.R., comp., 2005, Bedrock Geology of Illinois: Champaign, Ill., Illinois State Geological Survey, Illinois Map Series 14, scale 1:500,000. This report 1559 Wilde, E.M., and Bergantino, R.N., 2004, Geologic and structure contour map of the Fort Peck Lake West 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 499, 8 p., 1 sheet, scale 1:100,000. This report 1579 Lonn, J.D., Skipp, B., Ruppel, E.T., Janecke, S.U., Perry Jr., W.J., Sears, J.W., Bartholomew, M.J., Stickney, M.C., Fritz, W.J., Hurlow, H.A., and Thomas, R.C., 2000, Geologic map of the Lima 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 408, 42 p., 2 sheets, scale 1:100,000. This report 1541 McDonald, C., Elliott, C.G., Vuke, S.M., Lonn, J.D., and Berg, R.B., 2012, Geologic map of the Butte South 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Open-File Report 622, 1 sheet, scale 1:100,000. This report 1606 Vuke, S.M., Wilde, E.M., and Smith, L.N., 2003, Geologic and structure contour map of the Sidney 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 478, 10 p., 1 sheet, scale 1:100,000. This report 1538 Lopez, D.A., 2000, Geologic map of the Bridger 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 58, 1 sheet, scale 1:100,000. This report 1623 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 1568 Wilde, E.M., and Porter, K.W., 2001, Geologic map of the Harlowton 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 434, 20 p., 1 sheet, scale 1:100,000. This report 1622 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Wolf Point 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 358, 5 p., 1 sheet, scale 1:100,000. This report 1535 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Birney 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 431, 12 p., 1 sheet, scale 1:100,000. This report 1593 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Plentywood 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 361, 5 p., 1 sheet, scale 1:100,000. This report 1652 Lewis, R.S., Link, P.K., Stanford, L.R., and Long, S.P., 2012, Geologic map of Idaho: Idaho Geological Survey, Map M-9, scale 1:750,000. This report Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. MapUnitPolys_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. MapSourceID Identifies source map. Foreign key to DataSources table. This Report Unrepresentable domain Source_MapUnit Short, easily understood ASCII-character identifier for the source map unit. Prefixed with a MapSourceID value (from Source_DescriptionOfMapUnits) to differentiate identically-named source map units from different source maps. Otherwise conceptually equivalent to the "MapUnit" field in the GeMS "DescriptionOfMapUnits" table. This Report Unrepresentable domain ContactsAndFaults Contacts between map units, faults that bound map units, and associated dangling faults. Includes concealed faults and contacts, waterlines, snowfield and glacier boundaries, and map boundary. In the original file geodatabase, this dataset is found within the GeologicMap feature dataset. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Shape Internal geometry object ESRI Unrepresentable domain Shape_Length Internal feature length, double ESRI Unrepresentable domain Type Classifier that specifies what kind of geologic feature is represented by a database element: that a certain line within feature class ContactsAndFaults is a contact, or thrust fault, or water boundary; or that a point in GeochronPoints represents a K-Ar date. GeMS reverse fault A fault on which the hanging wall has moved upward relative to the footwall. The dip of the fault is usually greater than 45°. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. shoreline A line delineating the boundary of a body of water, such as a river, lake, or the ocean This Report internal contact A planar or irregular surface separating different portions of the same geologic map unit, such as individual landslide blocks with a mapped landslide, or separately emplaced portions of a composite plutonic unit. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. thrust fault A fault with a dip of 45° or less over much of its extent, on which the hanging wall has moved upward relative to the footwall. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. strike-slip fault, right lateral offset A strike-slip fault on which the side opposite the observer has been displaced to the right. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. gradational contact A contact defined by a gradual or continuous lithologic change from one geologic map unit to another. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. contact A plane or irregular surface between two types or ages of rock. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. detachment fault A regionally extensive, gently dipping normal fault that is commonly associated with extension in a metamorphic core complex. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. normal fault A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is usually 45-90 degrees, and in most cases close to 60 degrees. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. overturned thrust fault A fault with an original dip of 45° or less over much of its extent, on which the hanging wall has moved upward relative to the footwall, that has subsequently been rotated beyond perpendicular so that the primary hanging wall and footwall positioning have been reversed. This Report shear zone A discrete, parallel-sided zone of localized shearing displacement, which may be recognized by sigmoidal mineral-filled veins, locally well-developed cleavage or foliation, wholesale grain-size reduction or mylonitization, or some combination of these features. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. glacial terminus The lower margin or extremity of a glacier, referring to the maximum extent (limit) reached by the glacier. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. oblique-slip fault, left lateral offset A fault on which the net slip has dip slip and strike slip components, and the side opposite the observer has been displaced to the left. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. strike-slip fault, left lateral offset A strike-slip fault on which the side opposite the observer has been displaced to the left. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. scratch boundary Arbitrary, non-physical boundary between map units on a geologic map. For example, between an undivided unit and its subunits, or between different names for the same package of rocks. This Report key bed A well-defined, easily identifiable stratum or body of strata that has sufficiently distinctive characteristics (such as lithology or fossil content) to facilitate correlation in field mapping or subsurface work. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. fault A discrete surface or zone of discrete surfaces separating two rock masses across which one mass has slid past the other. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. listric fault A curved downward-flattening fault, generally concave upward. Listric faults may be characterized by normal or reverse separation, but the term is used most frequently in normal faulting and is often a characteristic of growth faults. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. low-angle normal fault A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is less than 45 degrees. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. oblique-slip fault, right lateral offset A fault on which the net slip has dip slip and strike slip components, and the side opposite the observer has been displaced to the right. Jackson, J.A., Mehl, James P., and Neuendorf, Klaus K.E., 2007, Glossary of Geology: American Geosciences Institute, Alexandria VA, online ed. map boundary The boundary of the map. In a GIS database, the line that bounds the outer extent of the polygons. This Report IsConcealed Flag for contacts and faults covered by overlying map unit. GeMS Unrepresentable domain LocationConfidenceMeters Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. GeMS Positive real number. Value of -9, -99, or -999 indicates value is unknown. ExistenceConfidence Confidence that feature exists. GeMS questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. IdentityConfidence Confidence that feature is correctly identified. GeMS questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain DataSourceID Source of data; foreign key to table DataSources. GeMS 1093 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 674 Mudrey Jr., M.G., Brown, B.A., Greenberg, J.K., 1982, Bedrock Geologic Map of Wisconsin: Wisconsin Geological and Natural History Survey Map M-078, scale 1:1,000,000. This report 269 Middendorf, M.A., 2001, Bedrock geologic map of the Halifax 7.5' quadrangle Jefferson, St. Francois and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-386-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 145 Smith, D.C., 1988, Recon geologic map [Dudenville 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8725, scale 1:24000. This report 650 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 105 Stout, L.N., 1960, Bedrock geologic map of the Stockton 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP6023, scale 1:24000. This report 1619 Wilde, E.M., and Porter, K.W., 2002, Geologic map of the Winifred 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 437, 13 p., 1 sheet, scale 1:100,000. This report 1311 US Census State Borders This report 526 Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | Satterfield, I.R., 1975, Reconnaissance geologic map of the Edgar Springs 15' quadrangle, Missouri; Missouri Geological Survey, RO7501, scale 1:62500. This report 921 Caldwell, D.H., Erwin, R.B., and Woodward, H.P., 1968, Geologic Map of West Virginia: West Virginia Geological and Economic Survey Map 1, scale 1:250,000. This report 135 Thomson, K.C., 1982, Geologic map of the Branson, Mincy, Hollister, and Forsyth quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-115-GI, scale 1:62500. This report 335 Anderson, R.E., 1962, Geologic map of Precambrian igneous rocks in the Taum Sauk area, Missouri; Missouri Geological Survey, RO6203, scale 1:62500. This report 43 Satterfield, I.R., 1976, Reconnaissance geologic map of the Stoutland 15' quadrangle, Missouri; Missouri Geological Survey, SP7616, scale 1:62500. | Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. This report 1417 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 1563 Vuke, S.M., Colton, R.B., and Fullerton, D.S., 2002, Geologic map of the Great Falls North 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 459, 13 p., 1 sheet, scale 1:100,000. This report 502 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Johnson, W.D., 1985, Geologic map of the Morley quadrangle, Scott County, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1805, scale 1:24000. This report 45 Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. | McFarland, M. and Middendorf, M.A., 1984, [Geology of the Eldridge East 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8411, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 958 US Census State Borders This report 259 Amos, D.H., 1985, Geologic map of the Rockwood 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-223-GI, scale 1:24000. This report 490 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. | Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. This report 652 Horton, J.W., Jr., and Dicken, C.L., 2000, Preliminary geologic map of the Appalachian Piedmont and Blue Ridge, South Carolina segment: U.S. Geological Survey Open-File Report 01-298, scale 1:500,000 This report 441 Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. | Weary, D.J., Orndorff, R.C., and Repetski, J.E., 2013, Geologic map of the Jam Up Cave and Pine Crest quadrangles, Shannon, Texas, and Howell Counties, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3248, scale 1:24000. This report 485 Amos, D.H., 1981, Geologic map of the Chaffee quadrangle, Scott and Cape Girardeau counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1316, scale 1:24000. | Amos, D.H., 1981, Preliminary bedrock geologic map of the Whitewater 7 1/2' quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1256, scale 1:24000. This report 25 Whitfield, J.W., 1986, Bedrock geology map [Udall 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8627, scale 1:24000. This report 442 Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. | Weary, D.J. and Orndorff, R.C., 2012, Geologic map of the Alley Spring Quadrangle, Shannon County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3161, scale 1:24000. This report 399 Walker, R., 1960, Geologic map of the Filley 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP6044, scale 1:24000. This report 287 Berry, A.W., Jr., 1970, Geologic map of a portion of the Taum Sauk Caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, RO7001, scale 1:24000. | Robertson, C.E., 1995, Geologic map of the southeast part of the Ironton 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO9503, scale 1:24000. This report 317 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. This report 1583 Bergantino, R.N., 1999, Geologic and structure contour maps of the Malta 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 389, 4 p., 2 sheets, scale 1:100,000. This report 232 Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. This report 390 Brown, J.C., Jr., 1984, [Geology of the Macks Creek 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8415, scale 1:24000. | Brown, J.C., Jr., 1984, [Geology of the Hahatonka 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8417, scale 1:24000. This report 394 Smith, D.C., 1988, Recon. geologic map [Golden City 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8601, scale 1:24000. | Smith, D.C., 1988, Recon. geologic map [Milford 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8719, scale 1:24000. | Smith, D.C., 1988, Recon. geologic map [Kenoma 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8721, scale 1:24000. | Thomson, K.C. and Easson, Gregory, 1981, Geology of the Lockwood, Greenfield, South Greenfield, & Kings Point quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-80-GI, scale 1:62500. | Thomson, K.C. and McIntire, Harold Jr., 1981, Geology of the Stotts City, Rescue, Rescue, and Mt. Vernon quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-79-GI, scale 1:62500. | Thomson, K.C., Easson, Gregory, and Bohm, Rex, 1981, Geology of the Halltown, Halltown NE, Billings, and Chesapeak [Chesapeake] quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-78-GI, scale 1:62500. This report 1597 Wilde, E.M., and Smith, L.N., 2003, Geologic and structure contour map of the Richey 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 475, 9 p., 1 sheet, scale 1:100,000. This report 323 Crane, G.W., 1906, Field map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO0602, scale 1:62500. | St. Clair, S., 1920, [Geologic map of the Farmington 15' quadrangle, Missouri]; Missouri Geological Survey, RO2003B, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 348 Brown, V.M., 1983, Geology [of exposed Precambrian rocks] of the Des Arc NE 7 1/2' quadrangle, southeast Missouri; Missouri Geological Survey, Open-File Map, OFM-84-198-GI, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 344 McDowell, R.C. and Harrison, R.W., 2000, Geologic map of the Powder Mill Ferry quadrangle, Shannon and Reynolds counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2722, scale 1:24000. This report 147 Smith, D.C., 1988, Recon. geol. map [Eldorado Springs North 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8807, scale 1:24000. This report 1545 Vuke, S.M., Hargrave, P.A., and Smith, L.N., 2011, Geologic map of the Circle 30' x 60' quadrangle Dawson, McCone, and Prairie counties, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 597, 1 sheet, scale 1:100,000. This report 1575 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Lame Deer 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 428, 8 p., 1 sheet, scale 1:100,000. This report 1564 Vuke, S.M., 2000, Geologic map of the Great Falls South 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 407, 18 p., 1 sheet, scale 1:100,000. This report 1569 Sholes, M.A., and Bergantino, R.N., 2002, Geologic map of the Havre 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 467, 8 p., 1 sheet, scale 1:100,000. This report 1608 Harrison, J.E., Whipple, J.W., and Lidke, D.J., 1998, Geologic map of the western part of the Cut Bank 1 x 2 degree quadrangle, northwestern Montana: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2593, 1 sheet, scale 1:250,000. This report 1102 Hardeman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic Map of Tennessee: Tennessee Division of Geology State Geologic Map, scale 1:250,000 This report 22 Middendorf, M.A., 1995, Bedrock geologic map of the Viola 7.5' quadrangle, Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-95-308-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Middendorf, M.A., 2004, Bedrock geologic map of the Viola 7.5' quadrangle Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-04-498-GS, scale 1:24000. This report 377 Harrison, R.W., Palmer, J.R., Hoffman, David, Vaughn, J.D., Repetski, J.E., Frederiksen, N.O., and Forman, S.L., 2002, Geologic map of the Scott City 7.5-minute quadrangle, Scott and Cape Girardeau Counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2744, scale 1:24000. This report 200 Satterfield, I.R., 1980, Reconnaissance geologic map of the Higdon 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8003, scale 1:24000. This report 551 Satterfield, I.R., 1976, Geologic map of the Long Lane 15' quadrangle and the Buffalo and Charity 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7615, scale 1:62500. | Thomson, K.C., 1982, Geology of the Long Lane quadrangle, Missouri. [15']; Missouri Geological Survey, Open-File Map, OFM-82-102-GI, scale 1:62500. | Thomson, K.C., 1981, Geologic map of the Elkland 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8131, scale 1:24000. | Stout, L.N. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7622, scale 1:62500. This report 1577 Porter, K.W., and Wilde, E.M., 1993, Geologic map of the Lewistown 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 308, 22 p., 1 sheet, scale 1:100,000. This report 372 Nusbaum, R.L., 1978, Bedrock geologic map of the Iron Mountain Lake 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO7813, scale 1:24000. | Nusbaum, R.L., 1978, [Bedrock geologic map of the Iron Mountain Lake 7.5' quadrangle, Missouri]; Missouri Geological Survey, RO7813B, scale 1:24000. | Nusbaum, Robert l., 1980, A Precambrian collapse caldera boundary in the St. Francois Mountains, southeast Missouri; University of Kansas, Master's Thesis, ii+77 p., 9 figs., 1 pl., 8 tbls., 3 apps. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 19 Brown, J.C., Jr., 2001, Bedrock geologic map of the Richwoods 7.5' quadrangle; Franklin, Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-390-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 7 Middendorf, M.A., 2002, Bedrock geologic map of the Sunrise Beach 7.5' quadrangle Camden and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-421-GS, scale 1:24000. This report 1605 Mudge, M.R., Earhart, R.L., Whipple, J.W., and Harrison, J.E., 1983, Geologic and structure maps of the Choteau 1 x 2 degree quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Montana Atlas 3-A, 2 sheets, scale 1:250,000. This report 67 Thomson, K.C. and Baker, D.A., 1982, Geology of the Stockton, Crisp, Cedarville, and Wagoner quadrangles, Missouri. [7.5]; Missouri Geological Survey, Open-File Map, OFM-82-106-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Crisp 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8278, scale 1:24000. This report 478 Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Cedar Gap 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8266, scale 1:24000. | Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. This report 341 Amos, D.H. and Desborough, G.A., 1970, Geologic map of parts of the Ironton and Fredericktown areas, Missouri; Missouri Geological Survey, Report of Investigations, RI-047, pl-1, RO7003, scale 1:36000. This report 455 Thomson, K.C., 1982, Geology of the Cliquot, Polk, Bolivar, and Cedar Vista quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-104-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | Thomson, K.C., 1983, Geologic map of the Polk 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8360, scale 1:24000. This report 258 Amos, D.H., 1986, Geologic map of the Belgique 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-234-GI, scale 1:24000. This report 56 Thacker, J., 1975, Recon. bedrock geology [Eugene 15' quadrangle, Missouri]; Missouri Geological Survey, JC7502, scale 1:62500. This report 645 US Census State Borders This report 517 Harrison, R.W. and McDowell, R.C., 2003, Geologic map of the Wilderness and Handy quadrangles, Oregon, Carter, and Ripley counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2801, scale 1:24000. | McDowell, R.C., 1998, Geologic map of the Greer quadrangle, Oregon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2618, scale 1:24000. This report 1544 Berg, R.B., 2008, Geologic map of the Choteau 30' x 60' quadrangle, north central Montana: Montana Bureau of Mines and Geology Open-File Report 571, 16 p., 1 sheet, scale 1:100,000. This report 376 Marshall, J.H., Jr., 1950, Geologic map of Cape Girardeau area, Cape Girardeau County, Missouri; Missouri Geological Survey, PA5001, scale 1:24000. This report 356 Heyl, A.V., Odland, S.K., Moss, C.K., and Ryan, G.S, 1983, Mineral resource potential map of the Irish Wilderness area, Oregon County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1511A, scale 1:24000. This report 254 Amos, D.H., 1985, Geologic map of the Crosstown 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-222-GI, scale 1:24000. This report 366 Anderson, R.E., 1962, Geologic map of Precambrian igneous rocks in the Taum Sauk area, Missouri; Missouri Geological Survey, RO6203, scale 1:62500. | Berry, A.W., Jr., 1970, Geologic map of a portion of the Taum Sauk Caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, RO7001, scale 1:24000. This report 138 Anderson, K.H., 1971, Reconnaissance geologic map of the Long Lane 15' quadrangle, Missouri; Missouri Geological Survey, SP7108, scale 1:62500. This report 21 Brown, J.C., Jr., 2001, Bedrock geologic map of the Old Mines 7.5' quadrangle; Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-388-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 61 Harrison, R.W., 1995, Geologic map of the Eolia 7.5-minute quadrangle, Lincoln and Pike Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-2277, scale 1:24000. This report 205 Hendricks, H.E., 1949, Geologic map of the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, RO4903, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 168 Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Cedar Gap 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8266, scale 1:24000. This report 460 Whitfield, J.W., 1986, Bedrock geologic map [Brushyknob 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8603, scale 1:24000. | Whitfield, J.W., 1986, Bedrock geology map [Sweden 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8623, scale 1:24000. This report 62 Baker, H.W. and Starbuck, E.A., 1997, Bedrock geologic map of the Forsyth 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-321-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 479 Thomson, K.C., McIntire, Harold Jr., and Lock, F.L., 1981, Geology of the Niangua quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-77-GI, scale 1:62500. | Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Fordland 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8290, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 24 Middendorf, M.A., 1987, Geologic map [Gainesville 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8701, scale 1:24000. This report 1388 Gray, H.H., Bleuer, N.K., Lineback, J.A., Swadley, W.C., Richmond, G.M., Miller, R.A., Goldthwait, R.P., and Ward, R.A. compilers; Richmond, G.M., Fullerton, D.S., and Bush, C.A., eds., 1991, Quaternary geologic map of the Louisville 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-16), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-16/ This report 893 US Census State Borders This report 1382 Cleaves, E.T., Glaser, J.D., Howard, A.D., Johnson, G.H., Wheeler, W.H., Sevon, W.D., Sheldon, J., Owens, J.P., Peebles, P.C., compilers; Richmond, G.M., and Fullerton, D.S., Weide, D.L., eds., 1987, Quaternary geologic map of the Chesapeake Bay 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-18), [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nj-18/ This report 276 Middendorf, M.A. and Whitfield, J.W., 1992, Bedrock geologic map of the Herculaneum and Valmeyer 7.5' quadrangles, Jefferson County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-265-GMR, scale 1:24000. This report 119 Stout, L.N. and Satterfield, I.R., 1976, Geologic map of the Lebanon 15' quadrangle, Missouri; Missouri Geological Survey, SP7619, scale 1:62500. This report 263 Warfield, R.G., 1951, Geologic map of the northeast part of the Richwoods 15' quadrangle, Missouri; Missouri Geological Survey, Field Notebook, FN-1008, SL5118, scale 1:62500. | Ohle, E.L., 1960, [Bedrock Geologic Map Compilation of the Richwoods 15' Quadrangle]; Missouri Geological Survey, SL6011, scale 1:62500. This report 671 US Census State Borders This report 149 Robertson, C.E., 1990, Geologic map of the Brookline 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP9003, scale 1:24000. | Wedge, W.K., 2001, Geologic map of the Springfield, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-01-398-GS, scale 1:100000. This report 384 Whitfield, J.W., 2002, Bedrock geologic map of the St. Clair 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-435-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 69 Gentile, R.J., 1983, Geologic map of Belton [7.5'] quadrangle, Cass and Jackson counties, Missouri, and Johnson County, Kansas; Missouri Geological Survey, Report of Investigations, RI-069 Plate 1, LA8301, scale 1:24000. This report 430 Hays, T.S., Palmer, J.R., and Krizanich, G.W., 1992, Cross sections of Lower Ordovician carbonate depositional lithofacies and Mississippi Valley-type zinc- and iron-sulfide mineralization in the Caulfield District, east-central Part of Harrison 1o x 2o Quadrangle, Arkansas and Missouri; United States Geological Survey, Miscellaneous Field Studies map MF-1994C, 15 p.,1 pl. This report 116 Nichols, C.E., 1973, Geologic map of the south half of the Stoutland 15' quadrangle, Missouri; Missouri Geological Survey, SP7301, scale 1:24000. This report 483 Amos, D.H., 1981, Geologic map of the Dongola quadrangle, Bollinger and Stoddard counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1363, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. This report 1573 Wilde, E.M., and Vuke, S.M., 2004, Geologic map of the Jordan 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 514, 8 p., 1 sheet, scale 1:100,000. This report 353 Stewart, D.R., 1944, Field map of the Marble Hill 15' quadrangle, Missouri; Missouri Geological Survey, PA4401, scale 1:62500. This report 1570 O'Neill, J.M., and Christiansen, R.L., 2002, Geologic map of the Hebgen Lake 30' x 60' quadrangle, Beaverhead, Madison, and Gallatin counties, Montana, Park and Teton counties, Wyoming, and Clark and Fremont Counties, Idaho: Montana Bureau of Mines and Geology Open-File Report 464, 21 p., 1 sheet, scale 1:100,000. This report 100 Wedge, W.K., 1998, Bedrock geologic map of the Hurley 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-327-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 895 US Census State Borders This report 122 Thomson, K.C., 1981, Bedrock geologic map of the Galloway 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8135, scale 1:24000. | Thomson, K.C., 1978, Geologic map of Greene County, Missouri; Missouri Geological Survey, SP7801, scale 1:62500. This report 967 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 17 Brown, J.C., Jr., 2000, Bedrock geologic map of the Puxico 7.5' quadrangle; Butler, Stoddard and Wayne counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-367-GS, scale 1:24000. This report 1319 US Census State Borders This report 189 Middendorf, M.A., 1983, [Geology of the Dixon 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8323, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1643 US Census State Borders This report 42 Middendorf, M.A., 1981, [Geology of the Elkton 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8101, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 39 Easson, Greg, 1982, Geologic map of the Mountain Grove North 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8207, scale 1:24000. | Easson, Greg, 1982, Geologic map of the Mountain Grove South 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8211, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 246 Middendorf, M.A., 1988, Bedrock geologic map of the Ware 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-261-GS, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. | Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1989, Geologic map of the Cape Girardeau NE 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-253-GI, scale 1:24000. This report 12 Baker, H.W., 2002, Bedrock geologic map of the Lake Ozark 7.5' quadrangle Camden, Miller, and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-419-GS, scale 1:24000. This report 40 Sumner, H.S., 1982, [Geology of the Bado 15' quadrangle, Missouri]; Missouri Geological Survey, SP8221, scale 1:62500. This report 1655 Cleaves, E.T., Edwards, J., Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Scale 1:250,000. This report 1112 US Census State Borders This report 351 Bridge, Josiah, 1925, Geologic map of the Cape Girardeau 15' quadrangle, Missouri; Missouri Geological Survey, PA2509, scale 1:62500. This report 1664 US Census State Borders This report 1581 Vuke, S.M., Wilde, E.M., Lopez, D.A., and Bergantino, R.N., 2000, Geologic map of the Lodge Grass 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 56, 1 sheet, scale 1:100,000. This report 188 Middendorf, M.A., 1983, [Geology of the Dixon 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8323, scale 1:24000. This report 387 Middendorf, M.A., 2002, Bedrock geologic map of the Pacific 7.5' quadrangle Franklin, Jefferson and St. Louis counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-433-GS, scale 1:24000. This report 632 Berg, T.M., Edmunds, W.E., Geyer, A.R., Glover, A.D., Hoskins, D.M., MacLachlan, D.B., Root, S.I., Sevon, W.D., and Socolow, A.A. 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey Map 1, Scale 1:250,000. This report 1533 Evans, K.V ., and Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series I-2765, 1 sheet, scale: 1:100,000. This report 212 Dake, C.L., 1929, Geologic map of Potosi-Edgehill [15'] quadrangles [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-023, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 403 McQueen, H.S. and Hughes, V.H., 1924, [Field map of the Forsyth 30' x 30' quadrangle, Missouri]; Missouri Geological Survey, HA2401I, scale 1:125000. This report 496 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. This report 110 Rueff, A.W., 1976, Reconnaissance geologic map of the Drynob 15' quadrangle and part of the Richland 15' quadrangle, Missouri; Missouri Geological Survey, SP7625, scale 1:62500. This report 536 Middendorf, M.A., 2001, Bedrock geologic map of the Halifax 7.5' quadrangle Jefferson, St. Francois and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-386-GS, scale 1:24000. | Vierrether, C.B., 2001, Bedrock geologic map of the Vineland 7.5' quadrangle, Jefferson and St. Francois counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-396-GS, scale 1:24000. This report 64 Clair, J.R., 1943, Oil and gas resources of Cass and Jackson Counties, Missouri; Missouri Geological Survey, Volume 27, 2nd Series, V-027 pl-03, scale 1:54300. This report 495 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. This report 41 Middendorf, M.A., 1981, [Geology of the Elkton 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8101, scale 1:24000. This report 150 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., and Higgins, Jerry, 1981, Geology of the Pleasant Hope, Ebenezer, Willard, and Morrisville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-45-GI, scale 1:62500. | Thomson, K.C., 1981, Bedrock geologic map of the Morrisville 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8136, scale 1:24000. This report 112 Thompson, T.L., 1975, Reconnaissance geologic map of part of the Manes 15' quadrangle, Missouri; Missouri Geological Survey, SP7514, scale 1:62500. This report 564 Orndorff, R.C., Harrison, R.W., and Weary, D.J., 1999, Geologic map of the Eminence quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2653, scale 1:24000. | Weary, D.J. and Orndorff, R.C., 2012, Geologic map of the Alley Spring Quadrangle, Shannon County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3161, scale 1:24000. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 865 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 165 McFarland, M., 1984, [Geology of the Eldridge West 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8413, scale 1:24000. This report 1103 US Census State Borders This report 1052 US Census State Borders This report 66 Work, D.M., 1985, [Bedrock geologic map of the Monett 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8507, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 233 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. This report 318 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | James, J.A., 1950, [Field map of the Bonne Terre 15' quadrangle, Missouri]; Missouri Geological Survey, RO5007B, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 139 Anderson, K.H., 1971, Reconnaissance geologic map of the Long Lane 15' quadrangle, Missouri; Missouri Geological Survey, SP7108, scale 1:62500. | Thomson, K.C., 1982, Geology of the Long Lane quadrangle, Missouri. [15']; Missouri Geological Survey, Open-File Map, OFM-82-102-GI, scale 1:62500. This report 531 Stewart, D.R. and Aid, Kenneth, 1943, Preliminary geologic map of the Fredericktown district, Missouri; Missouri Geological Survey, Manuscript file, MSC-1535, RO4301, scale 1:62500. | Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. | Stewart, D.R., 1943, Reconnaissance geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO4310, scale 1:48000. This report 453 Middendorf, M.A., 1997, Bedrock geology map of the Shell Knob 7.5' quadrangle, Taney [and Barry] County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-324-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Middendorf, M.A., 1998, Bedrock geologic map of the Jenkins 7.5' quadrangle [Barry County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-328-GS, scale 1:24000. This report 524 Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. | Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. | Harrison, R.W. and Schultz, Art, 1995, Geologic map of the Coffman 7.1/2' quadrangle, Ste. Genevieve County, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-419, scale 1:24000. This report 881 US Census State Borders This report 447 Starbuck, Edith, 2010, Bedrock geologic map of the Eureka 7.5' quadrangle Franklin and St. Louis Counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-10-554-GS, scale 1:24000. This report 907 US Census State Borders This report 238 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 486 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. This report 540 Vierrether, C.B., 2001, Bedrock geologic map of the Tiff 7.5' quadrangle, Washington, St. Francois and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-394-GS, scale 1:24000. | Vierrether, C.B., 2001, Bedrock geologic map of the Vineland 7.5' quadrangle, Jefferson and St. Francois counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-396-GS, scale 1:24000. This report 614 Rickard, L.V., Isachsen, Y.W., and Fisher, D.W., 1970, Geologic Map of New York: New York State Museum and Science Service Map and Chart Series 15 (Explanatory sheet published in 1971), 5 sheets, scale 1:250,000 This report 157 Thomson, K.C., Fellows, Larry, and Walker, Wayne, 1981, Geology of the Galloway, Oak Grove Heights, Rogersville, and Ozark quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-48-GI, scale 1:62500. | Thomson, K.C., 1978, Geologic map of Greene County, Missouri; Missouri Geological Survey, SP7801, scale 1:62500. This report 90 Smith, D.C., 1989, [Bedrock geologic map of the Garland 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8909, scale 1:24000. This report 275 Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 1612 Reynolds, M.W., and Brandt, T.R., 2006, Preliminary geologic map of the Townsend 30' x 60' quadrangle, Montana: U.S. Geological Survey Open-File Report 2006-1138, scale 1:100,000. This report 1607 Mudge, M.R., Earhart, R.L., Whipple, J.W., and Harrison, J.E., 1983, Geologic and structure maps of the Choteau 1 x 2 degree quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Montana Atlas 3-A, 2 sheets, scale 1:250,000. This report 3 Baker, H.W., 2002, Bedrock geologic map of the Bagnell 7.5' quadrangle Camden and Miller counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-401-GS, scale 1:24000. This report 347 Brown, V.M., 1983, Geology [of exposed Precambrian rocks] of the Des Arc NE 7 1/2' quadrangle, southeast Missouri; Missouri Geological Survey, Open-File Map, OFM-84-198-GI, scale 1:24000. This report 49 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., and Higgins, Jerry, 1981, Geology of the Pleasant Hope, Ebenezer, Willard, and Morrisville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-45-GI, scale 1:62500. This report 36 Middendorf, M.A., 1986, Bedrock geologic map [Nichols Knob 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8615, scale 1:24000. This report 1555 Kellogg, K.S., and Williams, V.S., 2006, Geologic map of the Ennis 30' x 60' quadrangle, Madison and Gallatin counties, Montana, and Park County, Wyoming: Montana Bureau of Mines and Geology Open-File Report 529, 27 p., 1 sheet, scale 1:100,000. This report 71 Diem, R.D., 1952, Geologic map of the S.W. 1/4 of the Aurora quadrangle, Missouri [15']; Missouri Geological Survey, HA5201, scale 1:24000. | Middendorf, M.A., 1994, Bedrock geologic map of the McDowell 7.5' quadrangle, Barry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-94-299-GMR, scale 1:24000. | Middendorf, M.A., 1998, Bedrock geologic map of the Jenkins 7.5' quadrangle [Barry County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-328-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 109 Thompson, T.L., 1975, Reconnaissance geologic map of the Drynob 15' quadrangle, Missouri; Missouri Geological Survey, SP7505, scale 1:62500. This report 1285 Cadwell, D.H., et al., 1991, Surficial geologic map of New York; Adirondack sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 248 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 379 Robertson, C.E., 1991, Geologic map of the Sullivan 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL9105, scale 1:24000. | Robertson, C.E., 1991, Outcrop Map [of the Sullivan 7.5' Quadrangle]; Missouri Geological Survey, SL9106, scale 1:24000. This report 1656 US Census State Borders This report 83 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. | Jeffries, N. W., 1954, Areal geology of the Fordland area, northwest Missouri; Missouri Geological Survey, SP5401, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Fordland 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8290, scale 1:24000. This report 569 Weary, D.J. and Weems, R.E., 2005, Geologic map of the Van Buren North quadrangle, Carter, Reynolds, and Shannon Counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2802, scale 1:24000. | Orndorff, R.C., 2003, Geologic map of the Fremont quadrangle, Shannon, Carter, and Oregon counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2775, scale 1:24000. This report 184 Easson, Greg and Sumner, H.S., 1982, [Geology of the Ozark Springs 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8219, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Brownfield 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8315, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 209 Erickson et al, 1950, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5003, scale 1:62500. This report 1586 Lonn, J.D., McDonald, C., Sears, J.W., and Smith, L.N., 2010, Geologic map of the Missoula East 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 593, 2 sheets, scale 1:100,000. This report 1035 Tweto, Ogden, 1979, Geologic map of Colorado: U.S. Geological Survey, scale 1:500,000 This report 434 Stewart, Dan and McManamy, Lyle, 1942, Geologic map of the south parts of the Zalma and Advance 15' quadrangles, Missouri; Missouri Geological Survey, PA4202, scale 1:62500. This report 1529 Vuke, S.M., Wilde, E.M., Colton, R.B., and Stickney, M.C., 2001, Geologic map of the Baker 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 427, 9 p., 1 sheet, scale 1:100,000. This report 596 US Census State Borders This report 285 Grawe, O.R., 1940, Geologic map of part of the east half of the Union 15' quadrangle, Missouri; Missouri Geological Survey, SL4003, scale 1:15800. | Grawe, O.R., 1940, Part of E 1/2 Union quad [Geologic map of T. 42 N., R. 1 W., Missouri]; Missouri Geological Survey, SL4003B, scale 1:15800. This report 44 Satterfield, I.R., 1976, Reconnaissance geologic map of the Stoutland 15' quadrangle, Missouri; Missouri Geological Survey, SP7616, scale 1:62500. | Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 20 Brown, J.C., Jr., 2001, Bedrock geologic map of the Old Mines 7.5' quadrangle; Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-388-GS, scale 1:24000. This report 144 Smith, D.C., 1988, Recon. geologic map [Kenoma 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8721, scale 1:24000. | Smith, D.C., 1988, Recon. geologic map [Maple Grove 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8723, scale 1:24000. This report 182 Easson, Greg and Sumner, H.S., 1982, [Geology of the Crocker 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8231, scale 1:24000. This report 118 Middendorf, M.A., 1984, [Geology of the Humansville 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-84-201d-GI, scale 1:24000. | Beveridge, T.R., 1960, Reconnaissance geologic map of part of Polk County, Missouri; Missouri Geological Survey, SP6005, scale 1:125000. This report 106 Walker, R., 1961, Bedrock geologic map of the Galloway 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP6107, scale 1:24000. This report 11 Siemens, M.A., 2002, Bedrock geologic map of the Gray Summit 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-415-GS, scale 1:24000. This report 527 Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | Satterfield, I.R., 1980, Reconnaissance geologic map of the Higdon 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8003, scale 1:24000. | Satterfield, I.R., 1980, Reconnaissance geologic map of the Hurricane 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8004, scale 1:24000. | Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. This report 190 Easson, Greg, 1982, Geologic map of the Slabtown Spring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8215, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 847 US Census State Borders This report 558 Middendorf, M.A., 1983, [Geology of the Lebanon 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8305, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Oakland 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8307, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Drynob 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8313, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Drew 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8317, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Winnipeg 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8319, scale 1:24000. | McFarland, M. and Middendorf, M.A., 1984, [Geology of the Eldridge East 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8411, scale 1:24000. This report 426 Vierrether, C.B., 2006, Bedrock geologic map of the Montgomery City 7.5' quadrangle Montgomery County, Missouri; Missouri Geological Survey, Open-File Map, OFM-06-516-GS, scale 1:24000. | Vierrether, C.B, 2007, Bedrock geologic map of the Williamsburg 7.5' quadrangle Callaway and Montgomery counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-07-527-GS, scale 1:24000. This report 466 Whitfield, J.W., 1986, Bedrock geology map [Wasola 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8631, scale 1:24000. | Whitfield, J.W., 1986, Bedrock geology map [Willhoit 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, HA8633, scale 1:24000. This report 1653 US Census State Borders This report 1584 Vuke, S.M., and Wilde, E.M., 2004, Geologic map of the Melstone 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 513, 12 p., 1 sheet, scale 1:100,000. This report 1565 Lonn, J.D., and Berg, R.B., 1996, Geologic map of the Hamilton 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 340, 8 p., 1 sheet, scale 1:100,000. This report 1084 Snead, J.I., and McCulloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey Geologic Map 5, scale 1:500,000. This report 392 Whitfield, J.W., 1986, Bedrock geology map [Wasola 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8631, scale 1:24000. This report 277 Martin, J.A. and Williams, J.H., 1967, Field map of the Union 15' quadrangle, Missouri; Missouri Geological Survey, SL6705, scale 1:62500. This report 443 Starbuck, Edith, 2010, Bedrock geologic map of the Eureka 7.5' quadrangle Franklin and St. Louis Counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-10-554-GS, scale 1:24000. | Starbuck, Edith, 2010, Bedrock geologic map of the Labadie 7.5' quadrangle Franklin and St. Charles counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-10-556-GS, scale 1:24000. This report 52 Stewart, Dan and McManamy, Lyle, 1942, [Geologic map of the Bloomfield and Puxico 15' quadrangles, Missouri]; Missouri Geological Survey, DY4201, scale 1:62500. | Stewart, D., 1942, [Outcrop map of the Bloomfield 15' quadrangle, Missouri]; Missouri Geological Survey, DY4202, scale 1:62500. | Stewart, Dan, McManomy, Lyle [McManamy], and Amos, Dewey, 1981, Geology of the Advance, Bell City, Bloomfield, Clines Island, Essex, and Dexter quadrangles, MO. [7.5' quadrangles]; Missouri Geological Survey, Open-File Map, OFM-81-52-GI, scale 1:62500. This report 854 US Census State Borders This report 515 Weems, R.E., 2002, Geologic map of the Low Wassie quadrangle, Oregon and Shannon counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2719, scale 1:24000. | Orndorff, R.C. and Harrison, R.W., 2001, Geologic map of the Winona quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2749, scale 1:24000. | Orndorff, R.C., 2003, Geologic map of the Fremont quadrangle, Shannon, Carter, and Oregon counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2775, scale 1:24000. This report 1538 Lopez, D.A., 2000, Geologic map of the Bridger 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 58, 1 sheet, scale 1:100,000. This report 1568 Wilde, E.M., and Porter, K.W., 2001, Geologic map of the Harlowton 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 434, 20 p., 1 sheet, scale 1:100,000. This report 216 Harrison, R.W. and Schultz, Art, 1995, Geologic map of the Coffman 7.1/2' quadrangle, Ste. Genevieve County, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-419, scale 1:24000. This report 298 Middendorf, M.A., 2001, Bedrock geologic map of the Fletcher 7.5' quadrangle Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-384-GS, scale 1:24000. This report 1622 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Wolf Point 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 358, 5 p., 1 sheet, scale 1:100,000. This report 211 Dake, C.L., 1929, Geologic map of Potosi-Edgehill [15'] quadrangles [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-023, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 31 Palmer, Jim, 1986, Reconnaissance bedrock geology [Rockbridge 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8619, scale 1:24000. This report 38 Whitfield, J.W., 1996, Bedrock geologic map of the Garber 7.5' quadrangle, Stone and Taney counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-96-316-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 173 Middendorf, M.A., 1991, Bedrock geology Laclede County, Missouri [Plate 1]; Missouri Geological Survey, Open-File Map, OFM-92-281-GS, scale 1:100000. | Middendorf, M.A., 1983, [Geology of the Brush Creek 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8309, scale 1:24000. This report 181 Easson, Greg and Sumner, H.S., 1982, [Geology of the Richland 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8217, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 242 Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. This report 217 Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. This report 196 Satterfield, I.R., 1975, Reconnaissance geologic map of the Edgar Springs 15' quadrangle, Missouri; Missouri Geological Survey, RO7501, scale 1:62500. This report 89 Robertson, C.E., 1985, Field map [Smallett 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8511, scale 1:24000. This report 463 Whitfield, J.W., 1986, Bedrock geology map [Sweden 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8623, scale 1:24000. | Whitfield, J.W., 1986, Bedrock geology map [Wasola 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8631, scale 1:24000. This report 240 Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. This report 235 Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 414 Hedden, W.J., 1968, Geologic map of the Thayer area, Missouri; Missouri Geological Survey, PB6801, scale 1:62500. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 308 Wedge, W.K., 1999, Bedrock geologic map of the Doniphan South 7.5' quadrangle [Ripley County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-336-GS, scale 1:24000. This report 516 Harrison, R.W. and McDowell, R.C., 2003, Geologic map of the Wilderness and Handy quadrangles, Oregon, Carter, and Ripley counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2801, scale 1:24000. | Weary, D.J. and McDowell, R.C., 2007, Geologic map of the Big Spring quadrangle, Carter County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-2804, scale 1:24000. This report 355 Williams, J.H., 1967, Field map of the Gatewood 15' quadrangle, Missouri; Missouri Geological Survey, PB6701, scale 1:62500. This report 133 Thomson, K.C., 1982, Geologic map of the Branson, Mincy, Hollister, and Forsyth quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-115-GI, scale 1:62500. | Thomson, K.C., 1984, [Bedrock geologic map of the Mincy 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8445, scale 1:24000. This report 102 Baker, H.W. and Starbuck, E.A., 1998, Bedrock geologic map of the Day 7.5' quadrangle [Taney and Christian counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-325-GS, scale 1:24000. | Baker, H.W. and Starbuck, E.A., 1997, Bedrock geologic map of the Forsyth 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-321-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 431 Koenig, J.W., 1967, Outcrop map of the Noel 15' quadrangle, Missouri; Missouri Geological Survey, TU6702, scale 1:62500. This report 32 Robertson, C.E., 1985, Field map [Ava 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8501, scale 1:24000. This report 316 Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. This report 543 Whitfield, J.W. and Middendorf, M.A., 2002, Geologic map of the Festus 7.5' quadrangle Jefferson County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-426-GS, scale 1:24000. | Middendorf, M.A. and Whitfield, J.W., 1992, Bedrock geologic map of the Herculaneum and Valmeyer 7.5' quadrangles, Jefferson County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-265-GMR, scale 1:24000. This report 327 Buckley, E.R.; Crane, G.W., 1908, Geological map of the Flat River-Leadwood areas, Missouri; Missouri Geological Survey, Volume, 2nd Series, Preliminary Map, V-009, pl-048, RO0804, scale 1:24000. This report 1624 Porter, K.W., and Wilde, E.M., 2001, Geologic map of the Zortman 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 438, 16 p., 1 sheet, scale 1:100,000. This report 74 Paslay, J.D., 1952, Areal geologic map of the Tiffin 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP5202, scale 1:24000. This report 879 Spoljaric, N. and Jordan, R.R., 1966, Generalized geologic map of Delaware: Delaware Geological Survey, Special Publication 4, scale 1:297,500. This report 76 Middendorf, M.A., 1990, Geologic map of the Ebenezer 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP9001, scale 1:24000. This report 602 Dalton, Richard F., Monteverde, Donald H., Sugarman, Peter J., and Volkert, Richard A., compilers. Bedrock Geologic Map of New Jersey 2014. New Jersey Geological and Water Survey. 2014, Scale 1:250,000, 5 cross-sections. This report 1613 Berg, R.B., 2002, Geologic map of the Valier 30' x 60' quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Open-File Report 453, 10 p., 1 sheet, scale 1:100,000. This report 1530 Vuke, S.M., Berg, R.B., Colton, R.B., and O'Brien, H.E., 2002, Geologic map of the Belt 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 450, 19 p., 2 sheets, scale 1:100,000. This report 268 Parizek, E.J., 1948, Geologic map of the Tiff and Vineland 7 1/2' quadrangles, Missouri; Missouri Geological Survey, SL4801, scale 1:24000. | Parizek, E.J., 1948, [Outcrop map of the Vineland 7.5' quadrangle, Missouri]; Missouri Geological Survey, SL4802, scale 1:24000. This report 284 Searight , T.K. and Williams, J.H., 1953, [Field map of the Leasburg 7.5' Quadrangle]; Missouri Geological Survey, SL5306, scale 1:24000. | Searight, T.K. and Williams, J.H., 1953, Field map of the Argo 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL5308, scale 1:24000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 228 Amos, D.H., 1981, Preliminary bedrock geologic map of the Whitewater 7 1/2' quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1256, scale 1:24000. This report 929 Clayton, L., Moran, S.R., Bluemle, J.P., and Carlson, C.G., 1980, Geologic map of North Dakota: U.S. Geological Survey, scale 1:500,000 This report 451 Clark, E.L., 1939, [Geologic map of the Cassville 15' quadrangle, Missouri, work map]; Missouri Geological Survey, HA4102, scale 1:48000. | Clark, E.L., 1941, [Geologic map of the Cassville 15' quadrangle, Missouri, work map]; Missouri Geological Survey, HA4104, scale 1:62500. | Thomson, K.C., 1984, [Bedrock geologic map of the Exeter 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8419, scale 1:24000. | Thomson, K.C., 1984, [Bedrock geologic map of the Seligman 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8455, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Searight, T.K., 1960, Geologic map of part of the Rocky Comfort 15' quadrangle, Missouri; Missouri Geological Survey, TU6001, scale 1:62500. | Searight, T.K., 1960, Outcrop map of the Rocky Comfort 15' quadrangle, Missouri; Missouri Geological Survey, TU6002, scale 1:62500. This report 65 Robertson, C., 1969, [Bedrock geologic map of the Joplin West 7.5' quadrangle, Missouri and Kansas]; Missouri Geological Survey, JO6901, scale 1:24000. | Robertson, C., 1969, [Bedrock geologic map of the Joplin East 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO6902, scale 1:24000. This report 283 Martel Laboratories, Inc., 1980, Geology of the Saint Louis Quadrangle; United States Department of Energy, Missouri Geological Survey, SL8001, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 980 US Census State Borders This report 437 Gealy, J.R., 1955, Geologic map of the Missouri portions of the Cape Girardeau and Jonesboro 15' quadrangles, Missouri; Missouri Geological Survey, PA5501, scale 1:62500. This report 160 Brown, J.C., Jr., 1983, [Geology of the Branch 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-84-200a-GI, scale 1:24000. This report 1574 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of Kalispell 1 x 2 degree quadrangle, Montana and Alberta, British Columbia: United States Geological Survey USGS Miscellaneous Geologic Investigation 2267, 2 sheets, scale 1:250,000. This report 673 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 303 Whitfield, J.W., 2002, Bedrock geologic map of the St. Clair 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-435-GS, scale 1:24000. This report 156 Thomson, K.C., McIntire, Harold Jr., Beveridge, T.R., and Pulliam, J.M., 1981, Geology of the Strafford, Elkland, Fair Grove, & Bassville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-47-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 6 Starbuck, Edith, 2002, Bedrock geologic map of the Camdenton 7.5' quadrangle Camden County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-407-GS, scale 1:24000. This report 126 Hayes, W.C., 1960, [Mississippian-Ordovician contact on the Hurley 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA6021, scale 1:24000. This report 365 Amos, D.H. and Desborough, G.A., 1970, Geologic map of parts of the Ironton and Fredericktown areas, Missouri; Missouri Geological Survey, Report of Investigations, RI-047, pl-1, RO7003, scale 1:36000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 1536 Miller, F.K., and Burmester, R.F., 2004, Geologic map of the Bonner's Ferry 30' X 60' quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Field Studies Map MP-2426, scale 1:100,000. This report 328 Stickel, J.E., Jr., 1949, Igneous geology of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO4902, scale 1:30000. This report 332 Zimmerman, R.A., 1959, Geologic map of the Annapolis area, Missouri; Missouri Geological Survey, RO5913, scale 1:62500. This report 1286 Muller, E.H., Cadwell, D.H., Connally, G.G., Young, R.A., 1986, Surficial geologic map of New York; Finger Lakes sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 464 Whitfield, J.W., 1986, Bedrock geology map [Sycamore 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8625, scale 1:24000. | Whitfield, J.W., 1987, Bedrock geology map [Gainesville NW 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8703, scale 1:24000. This report 270 Middendorf, M.A., 2001, Bedrock geologic map of the Halifax 7.5' quadrangle Jefferson, St. Francois and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-386-GS, scale 1:24000. This report 537 Brown, J.C., Jr., 2001, Bedrock geologic map of the Old Mines 7.5' quadrangle; Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-388-GS, scale 1:24000. | Vierrether, C.B., 2001, Bedrock geologic map of the Tiff 7.5' quadrangle, Washington, St. Francois and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-394-GS, scale 1:24000. This report 57 Thacker, J., 1975, Recon. geology [southern part of the Otterville West 7.5' quadrangle, Missouri]; Missouri Geological Survey, JC7536, scale 1:24000. This report 1561 Bergantino, R.N., 1999, Geologic map of the Glasgow 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 390, 4 p., 2 sheets, scale 1:100,000. This report 177 Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 1611 Harrison, J.E., Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Map I-1509-A, 2 sheets, scale 1:250,000. This report 1287 Cadwell, D.H., Connally, G.G., Fleisher, P.J., Muller, E.H., 1988, Surficial geologic map of New York; Niagara sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 34 Whitfield, J.W., 1986, Bedrock geologic map [Brushyknob 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8603, scale 1:24000. This report 1233 Miller, R.A., Maher, S.W., Copeland, Jr., C.W., Rheams, K.F., Neathery, T.L., Gilliland, W.A., Friddell, M.S., Van Nostrand, A.K., Wheeler, W.H., Holbrook, D.F., and Bush, W.V., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1988, Quaternary geologic map of the Lookout Mountain 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NI-16), scale 1:1,000,000 [Bush, C.A., Digital edition, 2013], https://pubs.usgs.gov/imap/i-1420/ni-16/ This report 404 Vierrether, C.B., 2008, Bedrock geologic map of the Calwood 7.5' quadrangle Callaway County, Missouri; Missouri Geological Survey, Open-File Map, OFM-08-533-GS, scale 1:240 This report 1303 US Census State Borders This report 321 Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 367 Anderson, R.E., 1962, Geologic map of Precambrian igneous rocks in the Taum Sauk area, Missouri; Missouri Geological Survey, RO6203, scale 1:62500. | Amos, D.H. and Desborough, G.A., 1970, Geologic map of parts of the Ironton and Fredericktown areas, Missouri; Missouri Geological Survey, Report of Investigations, RI-047, pl-1, RO7003, scale 1:36000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 529 Satterfield, I.R., 1980, Reconnaissance geologic map of the Higdon 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8003, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 166 Brown, J.C., Jr., 1984, [Geology of the Hahatonka 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8417, scale 1:24000. | Offield, T.W. and Pohn, H.A., 1979, Geology of the Decaturville impact structure, Missouri; United States Geological Survey, Professonal Paper, USGS PP-1042, scale 1:7000. This report 946 Osberg, P.H., Hussey, A.M. and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Geologic Map Series BGMM, scale 1:500,000. This report 1531 Porter, K.W., Wilde, E.M., and Vuke, S.M., 1996, Preliminary geologic map of the Big Snowy Mountains 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 341, 16 p., 1 sheet, scale 1:100,000. This report 1594 Harrison, J.E., Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Map I-1509-A, 2 sheets, scale 1:250,000. This report 304 Starbuck, E.A., 1999, Bedrock geologic map of the Briar 7.5' quadrangle [Ripley County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-332-GS, scale 1:24000. This report 422 Anderson, Roy Ernest, 1970, Ash-flow tuffs of Precambrian age in southeast Missouri; Missouri Geological Survey and Water Resources, Report of Investigations 46 (Contribution to Precambrian Geology No. 2), vi+50 p., 1 pl., 8 figs., 1 tbl. This report 1621 Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1803-H, 1 sheet, scale 1:250,000. This report 15 Brown, J.C., Jr., 2002, Bedrock geologic map of the Cyclone Hollow 7.5' quadrangle Franklin and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-411-GS, scale 1:24000. This report 525 Dake, C.L., 1929, Geologic map of Potosi-Edgehill [15'] quadrangles [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-023, scale 1:62500. | Erickson et al, 1950, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5003, scale 1:62500. This report 563 Orndorff, R.C., Harrison, R.W., and Weary, D.J., 1999, Geologic map of the Eminence quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2653, scale 1:24000. | Weary, D.J. and Orndorff, R.C., 2012, Geologic map of the Alley Spring Quadrangle, Shannon County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3161, scale 1:24000. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. | Orndorff, R.C. and Weary, D.J., 2009, Geologic map of the Round Spring quadrangle, Shannon County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3073, scale 1:24000. This report 297 Starbuck, E.A., 2000, Bedrock geologic map of the Hendrickson 7.5' quadrangle Butler and Wayne counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-361-GS, scale 1:24000. This report 99 Starbuck, E.A. and Wedge, W.K., 1998, Bedrock geologic map of the Spokane 7.5' quadrangle [Christian, Stone and Taney counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-330-GS, scale 1:24000. This report 220 Gooding, A.M., 1953, Geologic map of part of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO5301, scale 1:62500. This report 210 Dake, C.L., 1929, Geologic map of Potosi-Edgehill [15'] quadrangles [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-023, scale 1:62500. This report 266 Parizek, E.J., 1948, [Outcrop map of the Tiff 7.5' quadrangle, Missouri]; Missouri Geological Survey, SL4802B, scale 1:24000. This report 1617 Bergantino, R.N., 2003, Geologic and structure contour map of the Whitewater 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 471, 6 p., 1 sheet, scale 1:100,000. This report 505 Amos, D.H., 1985, Geologic map of the Crosstown 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-222-GI, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Rockwood 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-223-GI, scale 1:24000. This report 1616 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 178 Easson, Greg, 1986, Geology of the Manes quadrangle, Missouri [15']; Missouri Geological Survey, Open-File Map, OFM-84-187-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 253 Amos, D.H., 1986, Geologic map of the Perryville East 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-236-GI, scale 1:24000. This report 446 Ganz, Kyle, 2015, Bedrock geologic map of the Ashland 7.5' quadrangle, Boone County, Missouri; Missouri Geological Survey, Open-File Map, OFM-2015-658-GS, scale 1:24000. This report 113 Stout, L.N., 1975, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7522, scale 1:62500. | Stout, L.N. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7622, scale 1:62500. | Stout, L.N., 1975, [Work map of the Niangua 15' quadrangle, Missouri]; Missouri Geological Survey, SP7523, scale 1:62500. This report 249 Whitfield, J.W. and Middendorf, M.A., 1991, Bedrock geologic map of the Oak Ridge 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-260-GS, scale 1:24000. This report 1408 Walker, G.W., and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000 This report 281 Brill, K.J., Jr., 1986, Bedrock geologic map of the St. Louis County portion of the Granite City 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL8611, scale 1:24000. | Brill, K.J., Jr., 1987, Bedrock geologic map of the St. Louis County portion of the Cahokia 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL8701, scale 1:24000. This report 340 Klimstra, R.K., 1964, Areal geologic map of the Silvermine Granite in the Ironton and Fredericktown 15' quadrangles, Missouri; Missouri Geological Survey, RO6402, scale 1:43700. This report 46 Beveridge, T.R., 1949, Geologic map of the Weaubleau Creek area, Missouri; Missouri Geological Survey, SP4904, scale 1:24000. This report 539 Brown, J.C., Jr., 2001, Bedrock geologic map of the Richwoods 7.5' quadrangle; Franklin, Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-390-GS, scale 1:24000. | Brown, J.C., Jr., 2002, Bedrock geologic map of the Cyclone Hollow 7.5' quadrangle Franklin and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-411-GS, scale 1:24000. This report 296 Baker, H.W., 2000, Bedrock geologic map of the Poplar Bluff 7.5' quadrangle; Butler County, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-365-GS, scale 1:24000. This report 127 Koenig, J.W., 1967, SW Mo. stratigraphy [Cassville 15' quadrangle, Missouri]; Missouri Geological Survey, HA6703, scale 1:62500. This report 1185 Hallberg, G.R., Lineback, J.A., Mickelson, D.M., Knox, J.C., Goebel, J.E., Hobbs, H.C., Whitfield, J.W., Ward, R.A., Boellstorff, J.D., Swinehart, J.B., and Dreeszen, V.H., compilers; Richmond, G.M., Fullerton, D.S., and Christiansen, A.C., eds., 1994, Quaternary geologic map of the Des Moines 4° x 6° Quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-15), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-15/ This report 1082 US Census State Borders This report 920 US Census State Borders This report 204 Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. This report 314 Whitfield, J.W., 1989, Geologic map of the Defiance 7 1/2' quadrangle, St. Charles County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-255-GI, scale 1:24000. This report 192 Gentile, R.J. and Severn, Shelley, 2000, Geologic map of the Peculiar 7.5' quadrangle, Cass County, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-377-GS, scale 1:24000. This report 951 US Census State Borders This report 497 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. | Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. This report 326 Crane, G.W., 1906, [Geologic map of the Bonne Terre 15' quadrangle, Missouri]; Missouri Geological Survey, RO0601B, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 491 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. | Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. This report 255 Amos, D.H., 1985, Geologic map of the Altenburg 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-221-GI, scale 1:24000. This report 1585 Vuke, S.M., Luft, S.J., Colton, R.B., and Heffern, E.L., 2001, Geologic map of the Miles City 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 426, 11 p., 1 sheet, scale 1:100,000. This report 1553 Vuke, S.M., Wilde, E.M., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Ekalaka 30' x 60' quadrangle, eastern Montana and adjacent North and South Dakota: Montana Bureau of Mines and Geology Open-File Report 430, 11 p., 1 sheet, scale 1:100,000. This report 55 Ward, R.A., 1982, Geology of the Jefferson City quadrangle, Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-70-GI, scale 1:24000. This report 469 Smith, D.C., 1988, Recon. geologic map [Iantha 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8701, scale 1:24000. | Smith, D.C., 1988, Recon. geologic map [Nashville 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8713, scale 1:24000. This report 1540 Scarberry, K.C., Elliott, C.G., and Yakovlev, P.V., 2019, Geology of the Butte North 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 715, 30 p., 1 sheet, scale 1:100,000. This report 262 Warfield, R.G., 1951, Geologic map of the northeast part of the Richwoods 15' quadrangle, Missouri; Missouri Geological Survey, Field Notebook, FN-1008, SL5118, scale 1:62500. This report 983 Jirsa, M.A., Boerboom, T.J., Chandler, V.W., Mossler, J.H., Runkel, A.C., and Setterholm, D.R., 2011, Geologic map of Minnesota, Bedrock geology: Minnesota Geological Survey State Map Series S-21, scale 1:500,000. This report 193 Offield, T.W. and Pohn, H.A., 1979, Geology of the Decaturville impact structure, Missouri; United States Geological Survey, Professonal Paper, USGS PP-1042, scale 1:7000. This report 1557 Berg, R.B., and Vuke, S.M., 2002, Geologic map of the Fort Benton 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 460, 13 p., 1 sheet, scale 1:100,000. This report 476 Vierrether, C.B., 2002, Bedrock geologic map of the Green_bay_terrace 7.5' quadrangle Camden County, Missouri [Green Bay Terrace]; Missouri Geological Survey, Open-File Map, OFM-02-417-GS, scale 1:24000. | Middendorf, M.A., 1984, [Geology of the Decaturville 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8405, scale 1:24000. | Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | McFarland, M. and Middendorf, M.A., 1984, [Geology of the Eldridge East 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8411, scale 1:24000. | Brown, J.C., Jr., 1984, [Geology of the Hahatonka 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8417, scale 1:24000. This report 1666 Jennings, C.W., Gutierrez, C., Bryant, W., Saucedo, G., and Wills, C., 2010, Geologic Map of California: California Geological Survey Geologic Data Map GDM-2.2010 This report 1629 US Census State Borders This report 107 Koenig, J.W., 1965, Geologic map of the Galloway 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP6501, scale 1:24000. This report 386 Middendorf, M.A., 1991, Bedrock geologic map of the Pacific 7.5' quadrangle, Franklin, Jefferson and St. Louis counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-264-GMR, scale 1:24000. This report 101 Vierrether, C.B., 1998, Bedrock geologic map of the Highlandville 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-326-GS, scale 1:24000. | Brown, J.C., Jr., 1998, Bedrock geologic map of the Selmore 7.5' quadrangle [Christian County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-329-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 70 Thomson, K.C., McIntire, Harold Jr., Beveridge, T.R., and Pulliam, J.M., 1981, Geology of the Strafford, Elkland, Fair Grove, & Bassville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-47-GI, scale 1:62500. This report 1615 Reynolds, M.W., and Brandt, T.R., 2007, Preliminary geologic map of the White Sulphur Springs 30' x 60' quadrangle, Montana: U.S. Geological Survey Open-File Report 2006-1329, scale 1:100,000. This report 202 Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 474 Little, W.W., 2002, Bedrock geologic map of the Barnumton 7.5' quadrangle Camden County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-403-GS, scale 1:24000. | Little, W.W., 2002, Bedrock geologic map of the Bollinger Creek 7.5' quadrangle Camden and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-405-GS, scale 1:24000. This report 562 Orndorff, R.C., Harrison, R.W., and Weary, D.J., 1999, Geologic map of the Eminence quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2653, scale 1:24000. | McDowell, R.C. and Harrison, R.W., 2000, Geologic map of the Powder Mill Ferry quadrangle, Shannon and Reynolds counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2722, scale 1:24000. | Orndorff, R.C. and Harrison, R.W., 2001, Geologic map of the Winona quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2749, scale 1:24000. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 1547 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Culbertson 30' x 60' quadrangle, northeastern Montana and northwestern North Dakota: Montana Bureau of Mines and Geology Open-File Report 359, 5 p., 1 sheet, scale 1:100,000. This report 461 Middendorf, M.A., 1986, Bedrock geologic map [Nichols Knob 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8615, scale 1:24000. | Middendorf, M.A., 1986, Bedrock geologic map [Vanzant 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8629, scale 1:24000. This report 487 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. This report 623 Slucher, E.R., Swinford, E.M., Larsen, G.E., Schumacher, G.A., Shrake, D.L., Rice, C.L., Caudill, M.R., Rea, R.G., and Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey, Map BG-1, scale 1:500,000. This report 121 Thomson, K.C., 1978, Geologic map of Greene County, Missouri; Missouri Geological Survey, SP7801, scale 1:62500. This report 191 Sumner, H.S., 1986, Geology of the Bado quadrangle, Missouri [15']; Missouri Geological Survey, Open-File Map, OFM-84-188-GI, scale 1:62500. This report 542 Brown, J.C., Jr., 2002, Bedrock geologic map of the Cyclone Hollow 7.5' quadrangle Franklin and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-411-GS, scale 1:24000. | Whitfield, J.W., 2002, Bedrock geologic map of the St. Clair 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-435-GS, scale 1:24000. This report 482 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau 7 1/2' quadrangle, Missouri; Missouri Geological Survey, PA7301, scale 1:24000. | Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. This report 91 Whitfield, J.W., 1984, Outcrop Map [of the Richards 7.5' quadrangle, Missouri and Kansas]; Missouri Geological Survey, JO8403A, scale 1:24000. This report 1549 Vuke, S.M., 2014, Preliminary geologic map of the Dearborn River 30' x 60' quadrangle, west-central Montana: Montana Bureau of Mines and Geology Open-File Report 649, 9 p., 1 sheet, scale 1:100,000. This report 324 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. This report 549 Satterfield, I.R., 1976, Geologic map of the Long Lane 15' quadrangle and the Buffalo and Charity 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7615, scale 1:62500. | Stout, L.N. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7622, scale 1:62500. This report 1173 Swinehart, J.B., Dreeszen, V.H., Richmond, G.M., Tipton, M.J., Bretz, Richard, Steece, F.V., Hallberg, G.R., and Goebel, J.E., compilers; Richmond, G.M., ed., 1994, Quaternary geologic map of the Platte River 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-14), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-14/ This report 373 Crane, G.W., 1906, Field map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO0602, scale 1:62500. | St. Clair, S., 1920, [Geologic map of the Farmington 15' quadrangle, Missouri]; Missouri Geological Survey, RO2003B, scale 1:62500. This report 1526 Digital database of the Montana state geologic map, submitted to STATEMAP in GeMS This report 1376 Hartshorn, J.H., Thompson, W.B., Chapman, W.F., Black, R.F., Richmond, G.M., Grant, D.R., and Fullerton, D.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1991, Quaternary Geologic Map of the Boston 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420(NK-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nk-19/ This report 1284 Cadwell, D.H., Dineen, R.J., Connally, G.G., Fleisher, P.J., and Rich, J.L., 1987, Surficial geologic map of New York; Hudson-Mohawk sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 337 Robertson, F.S., 1961, Precambrian geology of the St. Francois Mountains in the Ironton 15' quadrangle, Missouri; Missouri Geological Survey, RO6101, scale 1:62500. | Marko, P.J., 1964, Geologic map of the Knoblick area, St. Francois County, Missouri; Missouri Geological Survey, RO6401, scale 1:31700. This report 360 Satterfield, I.R., 1970, Bedrock geologic map of the south half of the Yancy Mills 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO7008, scale 1:24000. | Lee, W., 1913, Geologic map of the Rolla [15'] quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-012, scale 1:62500. This report 557 Easson, Greg and Sumner, H.S., 1982, [Geology of the Conns Creek 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8229, scale 1:24000. | Easson, Greg and Sumner, H.S., 1982, [Geology of the Crocker 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8231, scale 1:24000. This report 152 Middendorf, M.A. and Schroeder, E.R., 1984, [Geology of the Hermitage 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8403, scale 1:24000. This report 541 Brown, J.C., Jr., 2002, Bedrock geologic map of the Cyclone Hollow 7.5' quadrangle Franklin and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-411-GS, scale 1:24000. | Brown, J.C., Jr., 2002, Bedrock geologic map of the Ebo 7.5' quadrangle Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-413-GS, scale 1:24000. This report 401 Thomson, K.C. and Easson, Gregory, 1981, Geology of the Walnut Grove, Everton, Ash Grove, and Dadeville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-76-GI, scale 1:62500. | Thomson, K.C., Easson, Gregory, and Bohm, Rex, 1981, Geology of the Halltown, Halltown NE, Billings, and Chesapeak [Chesapeake] quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-78-GI, scale 1:62500. | Robertson, C.E., 1990, Geologic map of the Brookline 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP9003, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 131 Williams, J.H. and Collins, Tom, 1968, Recon mapping for US Forest Service soil & geol [Ava 15' quadrangle, Missouri]; Missouri Geological Survey, HA6802, scale 1:62500. This report 154 Thomson, K.C., 1982, Geology of the Buffalo NW, Buffalo, Half Way [Halfway], and Charity quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-103-GI, scale 1:62500. This report 357 Satterfield, I.R., 1976, Reconnaissance geologic map of the Raymondville 15' quadrangle, Missouri; Missouri Geological Survey, RO7606, scale 1:62500. This report 465 Whitfield, J.W., 1986, Bedrock geology map [Udall 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8627, scale 1:24000. | Middendorf, M.A., 1987, Geologic map [Gainesville 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8701, scale 1:24000. This report 1580 Berg, R.B., Lopez, D.A., and Lonn, J.D., 2000, Geologic map of the Livingston 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 406, 21 p., 1 sheet, scale 1:100,000. This report 418 Weary, D.J. and McDowell, R.C., 2007, Geologic map of the Big Spring quadrangle, Carter County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-2804, scale 1:24000. This report 339 Marko, P.J., 1964, Geologic map of the Knoblick area, St. Francois County, Missouri; Missouri Geological Survey, RO6401, scale 1:31700. | Stewart, D.R. and Aid, Kenneth, 1943, Preliminary geologic map of the Fredericktown district, Missouri; Missouri Geological Survey, Manuscript file, MSC-1535, RO4301, scale 1:62500. This report 1556 Vuke, S.M., Bergantino, R.N., Colton, R.B., Wilde, E.M., and Heffern, E.L., 2001, Geologic map of the Forsyth 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 425, 11 p., 1 sheet, scale 1:100,000. This report 180 Middendorf, M.A., 1983, [Geology of the Drynob 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8313, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 137 Williams, J.H. and Collins, Tom, 1968, Recon mapping [Thornfield 15' quadrangle, Missouri]; Missouri Geological Survey, HA6801, scale 1:62500. This report 164 Hayes, W.C., 1960, Reconnaissance geologic map of the Fordland 15' quadrangle, Missouri; Missouri Geological Survey, SP6029, scale 1:62500. | Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. This report 407 Baker, H.W., 2003, Bedrock geologic map of the Washington West 7.5' quadrangle Franklin and Warren counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-03-467-GS, scale 1:24000. This report 1320 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Northern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 198 Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 457 Thomson, K.C., 1982, Geology of the Cliquot, Polk, Bolivar, and Cedar Vista quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-104-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Cedar Vista 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8268, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Half Way 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8296, scale 1:24000. This report 368 Robertson, F.S., 1961, Precambrian geology of the St. Francois Mountains in the Ironton 15' quadrangle, Missouri; Missouri Geological Survey, RO6101, scale 1:62500. | Amos, D.H. and Desborough, G.A., 1970, Geologic map of parts of the Ironton and Fredericktown areas, Missouri; Missouri Geological Survey, Report of Investigations, RI-047, pl-1, RO7003, scale 1:36000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 146 Smith, D.C., 1988, Recon. geologic map [Golden City 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8601, scale 1:24000. This report 331 Hook, J.W., 1956, Geologic map Belleview Valley area, Missouri; Missouri Geological Survey, RO5601, scale 1:62500. This report 1065 Kansas Geological Survey, 2008, Surficial Geology of Kansas: Kansas Geological Survey, Map M-118, scale 1:500,000 This report 2 Starbuck, E.A., 2017, Geologic map of Missouri, 2017; Missouri Geological Survey, GM-02-2017, scale 1:500000. This report 167 Middendorf, M.A., 1991, Bedrock geology Laclede County, Missouri [Plate 1]; Missouri Geological Survey, Open-File Map, OFM-92-281-GS, scale 1:100000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 456 Thomson, K.C., 1982, Geology of the Cliquot, Polk, Bolivar, and Cedar Vista quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-104-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Cedar Vista 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8268, scale 1:24000. | Thomson, K.C., 1982, Geology of the Buffalo NW, Buffalo, Half Way [Halfway], and Charity quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-103-GI, scale 1:62500. This report 396 Millman, D.B., 1954, Geologic map of the Caplinger Mills 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP5406, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1669 Pavey, R. R.; Goldthwait, R. P.; Brockman, S. C., Hull, D. N., Swinford, E. M., and Van Horn, R.G, 1999, Quaternary Geology of Ohio: Ohio Division of Geological Survey, Map No. 2, scale 1:500,000 This report 554 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., and Higgins, Jerry, 1981, Geology of the Pleasant Hope, Ebenezer, Willard, and Morrisville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-45-GI, scale 1:62500. | Thomson, K.C., 1981, Geology of the Willard 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8112, scale 1:24000. This report 1539 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Broadus 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 432, 13 p., 1 sheet, scale 1:100,000. This report 435 McDowell, R.C. and Harrison, R.W., 1998, Geologic map of the Powder Mill Ferry 7 1/2' quadrangle, Shannon and Reynolds counties, Missouri; Missouri Geological Survey, RO9803, scale 1:24000. This report 1076 US Census State Borders This report 412 Harrison, R.W. and McDowell, R.C., 2003, Geologic map of the Wilderness and Handy quadrangles, Oregon, Carter, and Ripley counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2801, scale 1:24000. | Weary, D.J. and Schindler, J.S., 2004, Geology of the Van Buren South quadrangle, Carter County, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2803, scale 1:24000. This report 280 Brill, K.G., Jr., 1986, Geologic map of St. Louis City and St. Louis County, Missouri; Missouri Geological Survey, SL8603, scale 1:63360. This report 439 Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 509 Amos, D.H., 1986, Geologic map of the Belgique 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-234-GI, scale 1:24000. | Amos, D.H., 1986, Geologic map of the Lithium 7 1/2' quadrangle, Perry and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-233-GI, scale 1:24000. This report 1579 Lonn, J.D., Skipp, B., Ruppel, E.T., Janecke, S.U., Perry Jr., W.J., Sears, J.W., Bartholomew, M.J., Stickney, M.C., Fritz, W.J., Hurlow, H.A., and Thomas, R.C., 2000, Geologic map of the Lima 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 408, 42 p., 2 sheets, scale 1:100,000. This report 383 Whitfield, J.W., 2002, Bedrock geologic map of the Moselle 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-431-GS, scale 1:24000. This report 519 Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. | Dake, C.L., 1929, Geologic map of Potosi-Edgehill [15'] quadrangles [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-023, scale 1:62500. This report 375 Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 227 Amos, D.H., 1981, Geologic map of the Dongola quadrangle, Bollinger and Stoddard counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1363, scale 1:24000. This report 84 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Fordland 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8290, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 458 Middendorf, M.A., 1983, [Geology of the Lebanon 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8305, scale 1:24000. | McFarland, M. and Middendorf, M.A., 1984, [Geology of the Eldridge East 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8411, scale 1:24000. | McFarland, M., 1984, [Geology of the Eldridge West 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8413, scale 1:24000. | Brown, J.C., Jr., 1984, [Geology of the Macks Creek 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8415, scale 1:24000. | Brown, J.C., Jr., 1984, [Geology of the Hahatonka 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8417, scale 1:24000. | Thomson, K.C., 1981, Geology of the Rader, Grovespring, Duncan, and Hartville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-75-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | Middendorf, M.A., 1983, [Geology of the Oakland 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8307, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Russ 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8311, scale 1:24000. This report 343 Corbitt, L.L., 1966, Geologic map of the Butler Hill Granite area in southeast Missouri; Missouri Geological Survey, RO6601, scale 1:20000. This report 86 Brown, J.C., Jr., 1998, Bedrock geologic map of the Selmore 7.5' quadrangle [Christian County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-329-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 187 Easson, Greg, 1982, [Geologic map of the Roby 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8213, scale 1:24000. | Wharton, H.M., 1985, Mines, prospects, and occurrences of metallic minerals, Springfield 1° x 2° quadrangle, Missouri [with generalized bedrock geology]; Missouri Geological Survey, Open-File Map, OFM-85-225a-MR, scale 1:250000. This report 120 Thomson, K.C., Berger, Phil, Porter, James, and Fellows, L.D., 1981, Geology of the Brookline, Republic, Springfield, and Nixa quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-46-GI, scale 1:62500. | Thomson, K.C., 1978, Geologic map of Greene County, Missouri; Missouri Geological Survey, SP7801, scale 1:62500. This report 245 Middendorf, M.A., 1988, Bedrock geologic map of the Ware 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-261-GS, scale 1:24000. This report 636 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 493 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. This report 123 Middendorf, M.A., 1984, [Geology of the Vista 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-84-201a-GI, scale 1:24000. This report 370 Nusbaum, R.L., 1978, Bedrock geologic map of the Iron Mountain Lake 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO7813, scale 1:24000. This report 556 Easson, Greg and Sumner, H.S., 1982, [Geology of the Conns Creek 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8229, scale 1:24000. | Middendorf, M.A., 1984, [Geology of the Montreal 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8407, scale 1:24000. This report 1593 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic map of the Plentywood 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 361, 5 p., 1 sheet, scale 1:100,000. This report 468 Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1987, Preliminary geologic map of the Rock Bridge area, Boone County, Missouri [Plate 1]; Missouri Geological Survey, JC8701, scale 1:48000. | Middendorf, M.A., 1987, Preliminary geologic map [primarily southern part of the Ashland 7.5' quadrangle, Missouri]; Missouri Geological Survey, JC8703B, scale 1:24000. | Ganz, Kyle, 2015, Bedrock geologic map of the Ashland 7.5' quadrangle, Boone County, Missouri; Missouri Geological Survey, Open-File Map, OFM-2015-658-GS, scale 1:24000. This report 207 Erickson et al, 1950, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5003, scale 1:62500. | Pratt, W.P., 1980, Geologic map of part of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO8002, scale 1:62500. This report 1415 US Census State Borders This report 362 Hendricks, H.E., 1954, Geologic map of a portion of the Crooked Creek area in the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-036, pl-08, RO5408, scale 1:9600. This report 1032 Haley, B.R., Glick, E.E., Bush, W.V., Clardy, B.F., Stone, C.G., Woodward, M.B., and Zachry, D.L., 1993, Geologic map of Arkansas: U.S. Geological Survey, scale 1:500,000. This report 499 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Johnson, W.D., 1985, Geologic map of the Morley quadrangle, Scott County, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1805, scale 1:24000. This report 1340 Fullerton, D.S., Cowan, W.R., Savon, W.D., Goldthwait, R.P., Ferrand, W.R., Muller, E.H., Bahling, R.E., and Stravers, J.A., compilers; Fullerton, D.S., and Richmond, G.M., eds.; 1991, Quaternary Geologic Map of the Lake Erie 4° x 6° Quadrangle, United States and Canada, U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-17), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-17/ This report 231 Harrison, R.W., 1999, Geologic map of the Thebes quadrangle, Illinois and Missouri; United States Geological Survey, Geologic Quadrangle Map, USGS GQ-1779, scale 1:24000. This report 546 Whitfield, J.W., 2002, Bedrock geologic map of the Moselle 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-431-GS, scale 1:24000. | Whitfield, J.W., 1996, Bedrock geologic map of the Union 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL9601, scale 1:24000. This report 1542 Reynolds, M.W., and Brandt, T.R., 2005, Geologic map of the Canyon Ferry Dam 30' x 60' quadrangle, west-central Montana: U.S. Geological Survey Scientific Investigations Map 2860, 32 p., 3 sheets, scale 1:100,000. . This report 535 Middendorf, M.A., 2001, Bedrock geologic map of the Fletcher 7.5' quadrangle Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-384-GS, scale 1:24000. | Brown, J.C., Jr., 2001, Bedrock geologic map of the Richwoods 7.5' quadrangle; Franklin, Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-390-GS, scale 1:24000. This report 35 Middendorf, M.A., 1986, Bedrock geologic map [Vanzant 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8629, scale 1:24000. This report 1595 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Powderville 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 429, 8 p., 1 sheet, scale 1:100,000. This report 301 Baker, H.W., 2001, Bedrock geologic map of the Danby 7.5' quadrangle Jefferson, St. Francois and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-380-GS, scale 1:24000. This report 9 Vierrether, C.B., 2002, Bedrock geologic map of the Cedar Hill 7.5' quadrangle Franklin and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-409-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 480 Thomson, K.C., McIntire, Harold Jr., and Lock, F.L., 1981, Geology of the Niangua quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-77-GI, scale 1:62500. | Thomson, K.C., McIntire, Harold Jr., Beveridge, T.R., and Pulliam, J.M., 1981, Geology of the Strafford, Elkland, Fair Grove, & Bassville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-47-GI, scale 1:62500. This report 288 Gealy, J.R., 1955, Geologic map of the Missouri portions of the Cape Girardeau and Jonesboro 15' quadrangles, Missouri; Missouri Geological Survey, PA5501, scale 1:62500. | Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1989, Geologic map of the Cape Girardeau NE 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-253-GI, scale 1:24000. This report 346 Sides, J.R., 1983, Geologic map of exposed Precambrian rocks in the Lake Killarney quadrangle, Missouri [7.5]; Missouri Geological Survey, Open-File Map, OFM-83-162-MR, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 282 McQueen, H.S., 1923, Geology of the Cuba fault, Gasconade County, Missouri; Missouri Geological Survey, SL2307, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 1589 Berg, R.B., and Lonn, J.D., 1996, Preliminary geologic map of the Nez Perce Pass 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Open-File Report 339, 9 p., 1 sheet, scale 1:100,000. This report 82 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. This report 1614 Lonn, J.D., and McFaddan, M.D., 1999, Geologic map of the Montana part of the Wallace 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 388, 15 p., 2 sheets, scale 1:100,000. This report 261 Robertson, C.E., 1991, Geologic map of the Sullivan 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL9105, scale 1:24000. This report 433 Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Macks Creek 15' quadrangle, Missouri; Missouri Geological Survey, SP7617, scale 1:62500. This report 13 Vierrether, C.B., 2002, Bedrock geologic map of the Green_bay_terrace 7.5' quadrangle Camden County, Missouri [Green Bay Terrace]; Missouri Geological Survey, Open-File Map, OFM-02-417-GS, scale 1:24000. This report 195 Satterfield, I.R., 1980, Reconnaissance geologic map of the Hurricane 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8004, scale 1:24000. This report 333 Robertson, F.S., 1961, Precambrian geology of the St. Francois Mountains in the Ironton 15' quadrangle, Missouri; Missouri Geological Survey, RO6101, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 591 Burchett, R.R., 1986, Geologic bedrock map of Nebraska: Nebraska Conservation and Survey Division Geologic Maps and Charts 1, scale 1:1000,000 This report 380 Searight, T.K. and Williams, J.H., 1953, Reconnaissance geologic map of part of the Sullivan 15' quadrangle, Missouri; Missouri Geological Survey, SL5303, scale 1:62500. This report 1036 US Census State Borders This report 1309 Gray, H.H., 1989, Quaternary geologic map of Indiana: Indiana Geological Survey, Miscellaneous Map 49, scale 1:500,000 This report 445 Elson, J.D., Cauthon, M.J., Larson, M.O., Newbold, K.S., Evans, K.R., Bassett, D.J., Mickus, K.L., Alexander, A., and Chester, R., 2014, Bedrock geologic map of the Jane 7.5' quadrangle, McDonald County, Missouri; Missouri Geological Survey, Open File Map, OFM-2014-651-GS, scale 1:24000. This report 29 Whitfield, J.W., 1986, Bedrock geology map [Sycamore 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8625, scale 1:24000. This report 290 Vierrether, C.B., 2001, Bedrock geologic map of the Vineland 7.5' quadrangle, Jefferson and St. Francois counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-396-GS, scale 1:24000. This report 1560 Berg, R.B., Lonn, J.D., and Locke, W.W., 1999, Geologic map of the Gardiner 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 387, 11 p., 1 sheet, scale 1:100,000. This report 1020 Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., 2000, Geologic Map of Arizona: Arizona Geological Survey, Map 35, scale 1:1,000,000. This report 521 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. | Crane, G.W., 1906, [Geologic map of the Bonne Terre 15' quadrangle, Missouri]; Missouri Geological Survey, RO0601B, scale 1:62500. | Buckley, E.R., 1908, Geologic and topographic map of the Bonne Terre sheet 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-009, part-2, pl-043, RO0802C, scale 1:62500. This report 1587 Lewis, R.S., 1998, Preliminary geologic map of the Montana part of the Missoula West 30' x 60' quadrangle: Montana Bureau of Mines and Geology Open-File Report 373, 20 p., 1 sheet, scale 1:100,000. This report 302 Baker, H.W., 2001, Bedrock geologic map of the Bloomsdale 7.5' quadrangle Ste. Genevieve County, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-378-GS, scale 1:24000. This report 312 Stinchcomb, B.L., 1959, Reconnaissance geologic map of part of the Potosi 15' quadrangle, Missouri; Missouri Geological Survey, SL5903, scale 1:62500. This report 378 Stewart, D.R., 1940, Geology of the southeast part of the Benton Hills, Scott County, Missouri; Missouri Geological Survey, PA4002, scale 1:16000. This report 1592 Lonn, J.D., Smith, L.N., and McCulloch, R.B., 2007, Geologic map of the Plains 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 554, 43 p., 1 sheet, scale 1:100,000. This report 381 Searight, T.K. and Williams, J.H., 1953, Reconnaissance geologic map of part of the Sullivan 15' quadrangle, Missouri; Missouri Geological Survey, SL5303, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 470 Easson, G.L., 1982, Geology of the Mountain Grove North, Mountain Grove South, Norwood, and Owens quadrangles, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-84-185-GI, scale 1:62500. | Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. This report 882 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 72 Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 85 Thomson, K.C. and Robertson, Charles, 1982, Geologic map of the Hurley, Galena, Highlandville and Spokane quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-114-GI, scale 1:62500. | Wedge, W.K., 1998, Bedrock geologic map of the Hurley 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-327-GS, scale 1:24000. | Starbuck, E.A. and Wedge, W.K., 1998, Bedrock geologic map of the Spokane 7.5' quadrangle [Christian, Stone and Taney counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-330-GS, scale 1:24000. | Thomson, K.C., 1974, Geologic map and section of the Hurley quadrangle, Missouri. [7.5']; Missouri Geological Survey, HA7405, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 208 James, J., 1948, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO4802, scale 1:62500. | Erickson et al, 1950, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5003, scale 1:62500. This report 1113 Barnes, V.E. (project supervisor), Hartmann, B.A., and Scranton, D.F. (cartography), 1992, Geologic Map of Texas: The University of Texas at Austin, Texas Bureau of Economic Geology, scale 1:500,000. This report 416 Weems, R.E., 2002, Geologic map of the Low Wassie quadrangle, Oregon and Shannon counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2719, scale 1:24000. This report 63 Stewart, D., 1942, [Outcrop map of the Bloomfield 15' quadrangle, Missouri]; Missouri Geological Survey, DY4202, scale 1:62500. This report 155 Thomson, K.C., McIntire, Harold Jr., Beveridge, T.R., and Pulliam, J.M., 1981, Geology of the Strafford, Elkland, Fair Grove, & Bassville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-47-GI, scale 1:62500. | Thomson, K.C., 1981, Geologic map of the Elkland 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8131, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1591 Lonn, J.D., McDonald, C., Lewis, R.S., Kalakay, T.J., O'Neill, J.M., Berg, R.B., and Hargrave, P., 2003, Geologic map of the Philipsburg 30' x 60' quadrangle, western Montana: Montana Bureau of Mines and Geology Open-File Report 483, 1 sheet, scale 1:100,000. This report 611 US Census State Borders This report 309 Brown, J.C., Jr., 2000, Bedrock geologic map of the Wappapello 7.5' quadrangle; Butler, Stoddard and Wayne counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-373-GS, scale 1:24000. This report 1590 Bergantino, R.N., 2001, Geologic and structure contour map of the Opheim 30' x 60' quadrangle, northeast Montana: Montana Bureau of Mines and Geology Open-File Report 440, 6 p., 1 sheet, scale 1:100,000. This report 151 Middendorf, M.A. and Schroeder, E.R., 1984, [Geology of the Hermitage 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8403, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 286 Robertson, C.E., 1995, Geologic map of the southeast part of the Ironton 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO9503, scale 1:24000. This report 644 Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., Skehan, J.W., and Mosher, S., 1994, Bedrock geologic map of Rhode Island: Rhode Island Geological Survey Rhode Island Map Series Map 1, scale 1:100,000. This report 159 Brown, J.C., Jr., 1984, [Geology of the Urbana 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-84-200d-GI, scale 1:24000. This report 514 Vierrether, C.B., 2000, Bedrock geologic map of the Stringtown 7.5' quadrangle; Butler County, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-371-GS, scale 1:24000. | Vierrether, C.B., 2000, Bedrock geologic map of the Williamsville 7.5' quadrangle; Butler and Wayne counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-375-GS, scale 1:24000. This report 329 James, J., 1951, Geologic map of the Wolf Creek-Greasy Creek fault zone in the southeast quarter of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO5104, scale 1:62500. This report 234 Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. This report 1601 Lonn,J.D., Elliott, C.G., Lewis, R.S., Burmester, R.F., McFaddan, M.D., Stanford, L.R., and Jänecke, S.U., 2019, Geologic map of the Montana part of the Salmon 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Geologic Map 75, 28 p., 1 sheet, scale 1:100,000. This report 30 Middendorf, M.A., Thompson, K.C., Robertson, C.E., Whitfield, J.W., Glick, E.E., Bush, W.V., Haley, B.R., McFarland, J.D., 1997, Geologic map of the Harrison 1° X 2° quadrangle, Missouri and Arkansas [color]; United States Geological Survey, Miscellaneous Geologic Investigations Map, USGS I-2548, scale 1:250000. This report 522 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Buckley, E.R., 1908, Geologic and topographic map of the Bonne Terre sheet 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-009, part-2, pl-043, RO0802C, scale 1:62500. | St. Clair, S., 1920, Geologic map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO2003, scale 1:62500. This report 224 Berry, A.W., Jr., 1970, Geologic map of a portion of the Taum Sauk Caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, RO7001, scale 1:24000. This report 130 Thompson, T.L., 1975, Mississippian outcrop map [Ava 15' quadrangle, Missouri]; Missouri Geological Survey, HA7502, scale 1:62500. This report 1283 Cadwell, D.H., Connally, G.G., Dineen, R.J., Fleisher, P.J., Fuller, M.L., Les Sirkin, M.L., and Wiles, G.C., 1989, Surficial geologic map of New York; Lower Hudson sheet: New York State Museum Map and Chart Series 40, scale 1:250,000, 5 sheets This report 124 Robertson, C.E., 1960, Geologic map [Galena 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA6010, scale 1:24000. This report 174 Middendorf, M.A., 1984, [Geology of the Decaturville 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8405, scale 1:24000. This report 1572 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2003, Geologic map of the Hysham 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 486, 10 p., 1 sheet, scale 1:100,000. This report 935 Gray, H.H., Ault, C.H., and Keller, S.J., 1987, Bedrock geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 48, scale 1:500,000 This report 427 Howe, W.B., 1960, [Reconnaissance bedrock geologic map of the Strasburg 7.5' quadrangle, Missouri]; Missouri Geological Survey, LA6013, scale 1:24000. This report 1141 Gadd, N.R., Veillete, J.J., Fullerton, D.S., Wagner, P.W., and Chapman, W.F., compilers; Fullerton, D.S., ed., 1993, Quaternary Geologic Map of the Ottawa 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-18), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-18/ This report 424 Ellis, T.C. and Vierrether, C., 2015, Bedrock geologic map of the Poplar Bluff 30' x 60' quadrangle, Missouri; Missouri Geological Survey, Open-File Map, OFM-2015-656-GS, scale 1:100000. This report 498 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. This report 1406 US Census State Borders This report 53 Stewart, Dan and McManamy, Lyle, 1942, [Geologic map of the Bloomfield and Puxico 15' quadrangles, Missouri]; Missouri Geological Survey, DY4201, scale 1:62500. This report 507 Amos, D.H., 1985, Geologic map of the Rockwood 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-223-GI, scale 1:24000. | Amos, D.H., 1986, Geologic map of the Belgique 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-234-GI, scale 1:24000. This report 1603 Lewis, R.S., Burmester, R.F., Breckenridge, R.M., McFaddan, M.D., and Phillips, W.M., 2008, Preliminary geologic map of the Sandpoint 30' x 60' quadrangle, Idaho and Montana, and the Idaho part of the Chewelah 30' x 60' quadrangle: Idaho Geological Survey, Digital Web Map DWM-94, scale 1:100,000. This report 613 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 158 Thomson, K.C., Fellows, Larry, and Walker, Wayne, 1981, Geology of the Galloway, Oak Grove Heights, Rogersville, and Ozark quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-48-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 471 Easson, Greg, 1986, Geology of the Manes quadrangle, Missouri [15']; Missouri Geological Survey, Open-File Map, OFM-84-187-GI, scale 1:62500. | Sumner, H.S., 1986, Geology of the Bado quadrangle, Missouri [15']; Missouri Geological Survey, Open-File Map, OFM-84-188-GI, scale 1:62500. This report 550 Satterfield, I.R., 1976, Geologic map of the Long Lane 15' quadrangle and the Buffalo and Charity 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7615, scale 1:62500. | Stout, L.N. and Satterfield, I.R., 1976, Geologic map of the Lebanon 15' quadrangle, Missouri; Missouri Geological Survey, SP7619, scale 1:62500. This report 5 Little, W.W., 2002, Bedrock geologic map of the Bollinger Creek 7.5' quadrangle Camden and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-405-GS, scale 1:24000. This report 477 Baker, H.W., 2002, Bedrock geologic map of the Lake Ozark 7.5' quadrangle Camden, Miller, and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-419-GS, scale 1:24000. | Middendorf, M.A., 2002, Bedrock geologic map of the Sunrise Beach 7.5' quadrangle Camden and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-421-GS, scale 1:24000. This report 570 Weary, D.J. and McDowell, R.C., 2007, Geologic map of the Big Spring quadrangle, Carter County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-2804, scale 1:24000. | Weary, D.J. and Schindler, J.S., 2004, Geology of the Van Buren South quadrangle, Carter County, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2803, scale 1:24000. | Harrison, R.W. and McDowell, R.C., 2003, Geologic map of the Wilderness and Handy quadrangles, Oregon, Carter, and Ripley counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2801, scale 1:24000. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 538 Brown, J.C., Jr., 2001, Bedrock geologic map of the Old Mines 7.5' quadrangle; Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-388-GS, scale 1:24000. | Brown, J.C., Jr., 2002, Bedrock geologic map of the Ebo 7.5' quadrangle Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-413-GS, scale 1:24000. This report 194 Satterfield, I.R., 1980, Reconnaissance geologic map of the Marquand 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8005, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 1576 Ruppel, E.T., 1998, Geologic map of the eastern part of the Leadore 30' x 60' quadrangle, Montana and Idaho: Montana Bureau of Mines and Geology Open-File Report 372, 9 p., 1 sheet, scale 1:100,000. This report 294 Baker, H.W. and Palmer, J.R., 2001, Bedrock geologic map of the Selma 7.5' quadrangle Jefferson and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-392-GS, scale 1:24000. This report 243 Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1989, Geologic map of the Cape Girardeau NE 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-253-GI, scale 1:24000. This report 423 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Buckley, E.R., 1908, Geologic and topographic map of the Bonne Terre sheet 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-009, part-2, pl-043, RO0802C, scale 1:62500. This report 1098 US Census State Borders This report 1055 Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic map of Georgia: Georgia Geological Survey, scale 1:500,000 This report 8 Starbuck, Edith, 2002, Bedrock geologic map of the Toronto 7.5' quadrangle Camden and Miller counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-423-GS, scale 1:24000. This report 432 Bostic, Joy Lorraine, Nuelle, Laurence M., and Smith, David C., 1990, Geology of the southern part of the southwest coal field, Missouri [in] Coal geology of the interior coal province, western region [prepared for the 1990 Annual Meeting of the Geological Society of America Coal Geology Division Field Trip]. Environmental and Coal Associates, p. 23-72, 13 figs., 1 tbl., Reston, Virginia, October, 1990. GB-022. This report 27 Whitfield, J.W., 1986, Bedrock geology map [Willhoit 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, HA8633, scale 1:24000. This report 307 Brown, J.C., Jr. and Wedge W.K., 1999, Bedrock geologic map of the Doniphan North 7.5' quadrangle [Ripley County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-334-GS, scale 1:24000. This report 1571 Harrison, J.E., Whipple, J.W., and Lidke, D.J., 1998, Geologic map of the western part of the Cut Bank 1 x 2 degree quadrangle, northwestern Montana: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2593, 1 sheet, scale 1:250,000. This report 440 Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. | Orndorff, R.C. and Weary, D.J., 2009, Geologic map of the Round Spring quadrangle, Shannon County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-3073, scale 1:24000. This report 361 Yorston, H.J., 1954, Geology of the south half of the Meramec Spring 15' quadrangle, Missouri; Missouri Geological Survey, RO5405, scale 1:62500. This report 603 This Report This report 566 Orndorff, R.C. and Harrison, R.W., 2001, Geologic map of the Winona quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2749, scale 1:24000. | Harrison, R.W., Orndorff, R.C., and Weary, D.J., 2002, Geologic map of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2767, scale 1:24000. | Orndorff, R.C., 2003, Geologic map of the Fremont quadrangle, Shannon, Carter, and Oregon counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2775, scale 1:24000. This report 1602 Wilde, E.M., and Vuke. S.M., 2004, Geologic map of the Sand Springs 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 515, 8 p., 1 sheet, scale 1:100,000. This report 214 St. Clair, S., 1920, Geologic map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO2003, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 896 Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, Map A-1, scale 1:500,000. This report 251 Whitfield, J.W.; Middendorf, M.A, 1989, Geologic map of the Neeleys Landing 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-254-GI, scale 1:24000. This report 1645 Osborne, W.E., Szabo, M.W., Copeland Jr., C.W., and Neathery, T.L., 1989, Geologic Map of Alabama: Geological Survey of Alabama Special Map 221, scale 1:500,000. This report 226 Stewart, Dan, McManomy, Lyle [McManamy], and Amos, Dewey, 1981, Geology of the Advance, Bell City, Bloomfield, Clines Island, Essex, and Dexter quadrangles, MO. [7.5' quadrangles]; Missouri Geological Survey, Open-File Map, OFM-81-52-GI, scale 1:62500. This report 203 Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 1599 Bergantino, R.N., Porter, K.W., and Hearn Jr., B.C., 2002, Geologic map of the Rocky Boy 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 451, 16 p., 1 sheet, scale 1:100,000. This report 278 Whitfield, J.W., 2002, Geologic map of the House Springs 7.5' quadrangle Jefferson County, Missouri [St. Louis County]; Missouri Geological Survey, Open-File Map, OFM-02-428-GS, scale 1:24000. This report 136 Bohm, Rex, 1983, Geology and structural features, Plate 1 [Aurora 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-83-163-GI, scale 1:24000. | Bohm, Rex, 1983, Geology and structural features, Plate 4 [Verona 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-83-166-GI, scale 1:24000. This report 143 Smith, D.C., 1988, Recon. geologic map [Iantha 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8701, scale 1:24000. This report 1598 McDonald, C., Lopez, D.A., Berg, R.B., and Gibson, R.I., 2005, Preliminary geologic map of the Ringling 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 511, 27 p., 1 sheet, scale 1:100,000. This report 1543 Lopez, D.A., 2002, Geologic map of the Chester 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 445, 11 p., 1 sheet, scale 1:100,000. This report 94 Vierrether, C.B., 1998, Bedrock geologic map of the Highlandville 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-326-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 345 Orndorff, R.C., Harrison, R.W., and Weary, D.J., 1999, Geologic map of the Eminence quadrangle, Shannon County, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2653, scale 1:24000. This report 239 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau 7 1/2' quadrangle, Missouri; Missouri Geological Survey, PA7301, scale 1:24000. | Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 244 Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. | Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1989, Geologic map of the Cape Girardeau NE 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-253-GI, scale 1:24000. This report 532 Hendricks, H.E., 1949, Geologic map of the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, RO4903, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | Erickson et al, 1950, Geologic map of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5003, scale 1:62500. | Degenfelder, G., 1950, Geologic map of part of the Berryman 15' quadrangle, Missouri; Missouri Geological Survey, RO5010, scale 1:62500. This report 1044 US Census State Borders This report 128 Williams, J.H. and Collins, Tom, 1968, Recon mapping for US Forest Service soil work [Protem 15' quadrangle, Missouri]; Missouri Geological Survey, HA6803, scale 1:62500. This report 462 Palmer, Jim, 1986, Reconnaissance bedrock geology [Rockbridge 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8619, scale 1:24000. | Whitfield, J.W., 1986, Bedrock geology map [Wasola 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8631, scale 1:24000. This report 1638 US Census State Borders This report 1073 Noger, M.C., 1988, Geologic map of Kentucky: U.S. Geological Survey, scale 1:500,000. This report 528 Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. | Stewart, D.R. and Aid, Kenneth, 1951, Geologic map of the Fredericktown 15' quadrangle, Missouri; Missouri Geological Survey, RO5106, scale 1:48000. This report 95 Whitfield, J.W., 1996, Bedrock geologic map of the Garber 7.5' quadrangle, Stone and Taney counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-96-316-GS, scale 1:24000. | Whitfield, J.W., 1997, Bedrock geology map of the Branson 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-320-GS, scale 1:24000. | Whitfield, J.W., 1997, Outcrop map [Branson 7.5' quadrangle, Taney County, Missouri]; Missouri Geological Survey, HA9702, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 941 US Census State Borders This report 272 Grenia, J.D., 1960, Reconnaissance bedrock geologic map of the Fletcher 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL6002, scale 1:24000. This report 1596 Lopez, D.A., 2001, Preliminary geologic map of the Red Lodge 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 423, 17 p., 1 sheet. This report 354 Stewart, D.R., 1944, Field map of the Cape Girardeau 15' quadrangle, Missouri; Missouri Geological Survey, PA4402, scale 1:62500. This report 274 Whitfield, J.W., 2002, Geologic map of the Lonedell 7.5' quadrangle Franklin and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-429-GS, scale 1:24000. This report 472 Middendorf, M.A., 1991, Bedrock geologic map of the Pacific 7.5' quadrangle, Franklin, Jefferson and St. Louis counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-264-GMR, scale 1:24000. | Middendorf, M.A. and Whitfield, J.W., 1992, Bedrock geologic map of the Herculaneum and Valmeyer 7.5' quadrangles, Jefferson County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-265-GMR, scale 1:24000. | Whitfield, J.A. and Middendorf, M.A., 1989, Preliminary geologic map of the Belew Creek 7 1/2' quadrangle, Jefferson County, Missouri; Missouri Geological Survey, SL8901, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 1527 Vuke, S.M., Wilde, E.M., Colton, R.B., and Bergantino, R.N., 2001, Geologic map of the Alzada 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 433, 9 p., 1 sheet, scale 1:100,000. This report 512 Whitfield, J.W. and Middendorf, M.A., 1991, Bedrock geologic map of the Oak Ridge 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-260-GS, scale 1:24000. | Whitfield, J.W.; Middendorf, M.A, 1989, Geologic map of the Neeleys Landing 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-254-GI, scale 1:24000. This report 222 Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. This report 1537 Vuke, S.M., Lonn, J.D., Berg, R.B., and Schmidt, C.J., 2014, Geologic map of the Bozeman 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Open-File Report 648, 44 p., 1 sheet, scale 1:100,000. This report 104 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., Jeffries, N.W., and Taylor, R.O., 1981, Geology of the Fordland quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-81-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1554 McDonald, C., Mosolf, J.G., Vuke, S.M., and Lonn, J.D., 2020, Geologic map of the Elliston 30? x 60? quadrangle, west-central Montana: Montana Bureau of Mines and Geology Geologic Map 77, 34 p., 1 sheet, scale 1:100,000. This report 1639 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 141 Anderson, K.H., 1971, Work Map [of the Long Lane 15' quadrangle, Missouri]; Missouri Geological Survey, SP7108B, scale 1:62500. This report 530 Walker, T.H., 1942, Bedrock geologic map of the northwest quarter of the Ironton 15' quadrangle, Missouri; Missouri Geological Survey, RO4205, scale 1:48000. | Berry, A.W., Jr., 1970, Geologic map of a portion of the Taum Sauk Caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, RO7001, scale 1:24000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 664 US Census State Borders This report 843 US Census State Borders This report 1552 Skipp, Betty, Janecke, S.U., 2004, Geologic map of the Montana part of the Dubois 30' x 60' quadrangle, southwest Montana: Montana Bureau of Mines and Geology Open-File Report 490, 12 p., 1 sheet, scale 1:100,000. This report 544 Whitfield, J.W., 2002, Geologic map of the Lonedell 7.5' quadrangle Franklin and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-429-GS, scale 1:24000. | Whitfield, J.W., 1992, Bedrock geologic map of the Cedar Hill 7 1/2' quadrangle, Jefferson County, Missouri; Missouri Geological Survey, SL9201, scale 1:24000. This report 1095 Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic map of South Dakota: South Dakota Geological Survey General Map G-10, scale 1:500,000. This report 1588 Porter, K.W., and Wilde, E.M, 1999, Geologic map of the Musselshell 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 386, 22 p., 1 sheet, scale 1:100,000. This report 225 Berry, A.W., Jr., 1976, Geologic map of the western portion of the Taum Sauk caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, Report of Investigations, RI-061, RO7603, scale 1:90000. This report 1160 Lineback, J.A., Bleuer, N.K., Mickelson, D.M., Ferrand, W.R., and Goldthwait, R.P., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1983, Quaternary geologic map of the Chicago 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-16/ This report 388 Stinchcomb, B.L. and Fellows, L.D., 2002, Geologic map of the Maxville 7.5' quadrangle Jefferson and St. Louis counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-430-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 1551 Bergantino, R.N., 2001, Geologic map of the Dodson 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 439, 9 p., 1 sheet, scale 1:100,000. This report 411 Weary, D.J. and Schindler, J.S., 2004, Geology of the Van Buren South quadrangle, Carter County, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2803, scale 1:24000. This report 492 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. This report 1400 Thompson, Woodrow B., and Borns, Harold W., Jr. (editors), 1985, Surficial geologic map of Maine: Maine Geological Survey, 42" x 52" color map, scale 1:500,000. Maine Geological Survey Maps. 15. http://digitalmaine.com/mgs_maps/15 This report 940 Witzke, B.J., Anderson, R.R., and Pope, J.P., 2010, Bedrock Geologic Map of Iowa: Iowa Geological Survey Open-File Map OFM-2010-01, scale 1:500,000. This report 1528 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2003, Geologic map of the Angela 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 485, 10 p., 1 sheet, scale 1:100,000. This report 186 Easson, Greg, 1982, [Geologic map of the Roby 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8213, scale 1:24000. This report 256 Flint, R.F., 1925, Geologic map of northern part of the Altenburg 15' quadrangle, Missouri; Missouri Geological Survey, PA2503, scale 1:62500. | Amos, D.H., 1985, Geologic map of the Altenburg 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-221-GI, scale 1:24000. This report 305 Wedge, W.K., 1999, Bedrock geologic map of the Poynor 7.5' quadrangle [Ripley County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-348-GS, scale 1:24000. This report 606 Tiger US State 2021 (tl_2021_us_state.SHP) This report 452 Thomson, K.C. and Baker, D.A., 1982, Geology of the Stockton, Crisp, Cedarville, and Wagoner quadrangles, Missouri. [7.5]; Missouri Geological Survey, Open-File Map, OFM-82-106-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Crisp 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8278, scale 1:24000. | Thomson, K.C. and Easson, Gregory, 1981, Geology of the Walnut Grove, Everton, Ash Grove, and Dadeville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-76-GI, scale 1:62500. | Thomson, K.C., 1982, Geology of the Bear Creek, Fair Play, Aldrich, and Bona quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-105-GI, scale 1:62500. This report 932 US Census State Borders This report 506 Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Jackson quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1935, scale 1:24000. This report 448 Siemens, M.A., 2015, Bedrock geologic map of the Hartsburg 7.5' quadrangle, Boone and Cole counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-2015-661-GS, scale 1:24000. This report 389 Spreng, A.C. and Proctor, P.D., 1999, Geologic Map of the Rolla 7.5' quadrangle [Phelps County, Missouri],; Missouri Geological Survey, Open-File Map, OFM-99-351-GS., scale 1:24000. This report 371 Nusbaum, R.L., 1978, [Bedrock geologic map of the Iron Mountain Lake 7.5' quadrangle, Missouri]; Missouri Geological Survey, RO7813B, scale 1:24000. This report 1291 This Report This report 428 Smith, D.C., 1989, [Bedrock geologic map of the Metz 7.5'' quadrangle, Missouri]; Missouri Geological Survey, JO8915, scale 1:24000. | Smith, D.C., 1989, [Bedrock geologic map of the Moundville 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8917, scale 1:24000. | Smith, D.C., 1989, [Bedrock geologic map of the Deerfield 7.5 quadrangle, Missouri]; Missouri Geological Survey, JO8919, scale 1:24000. This report 273 Whitfield, J.W. and Middendorf, M.A., 2002, Geologic map of the Festus 7.5' quadrangle Jefferson County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-426-GS, scale 1:24000. This report 132 Miller, D.E., 1974, [Geologic map of part of the North Fork River drainage, Missouri, portions of Topaz, Buckhart, Cabool and Mountain Grove 15' quadrangles]; Missouri Geological Survey, HA7403, scale 1:62500. This report 649 US Census State Borders This report 338 Marko, P.J., 1964, Geologic map of the Knoblick area, St. Francois County, Missouri; Missouri Geological Survey, RO6401, scale 1:31700. This report 1610 Vuke, S.M., and Colton, R.B., 2003, Geologic map of the Terry 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 477, 9 p., 1 sheet, scale 1:100,000. This report 342 Lemmon, R.D., 1964, Areal geologic map of the Slabtown Granite in the Fredericktown 15' quadrangle, Missouri; Missouri Geological Survey, RO6403, scale 1:43700. This report 1281 Fullerton, D.S., Sevon, W.D., Muller, E.H., Judson, Sheldon, Black, R.F., Wagner, P.W., Hartshorn, J.H., Chapman, W.F., and Cowan, W.D., compilers; Fullerton, D.S., ed., 1992, Quaternary Geologic Map of the Hudson River 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-18), scale 1:1,000,000, [Digital edition, 2005], https://pubs.usgs.gov/imap/i-1420/nk-18/ This report 176 Satterfield, I.R., 1976, Reconnaissance geologic map of the Stoutland 15' quadrangle, Missouri; Missouri Geological Survey, SP7616, scale 1:62500. This report 1021 US Census State Borders This report 185 Easson, Greg and Sumner, H.S., 1982, [Geology of the Ozark Springs 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8219, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 125 Thomson, K.C. and Robertson, Charles, 1982, Geologic map of the Hurley, Galena, Highlandville and Spokane quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-114-GI, scale 1:62500. | Wedge, W.K., 1998, Bedrock geologic map of the Hurley 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-327-GS, scale 1:24000. | Thomson, K.C., 1984, [Bedrock geologic map of the Hurley 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8433, scale 1:24000. | Thomson, K.C., 1974, Geologic map and section of the Hurley quadrangle, Missouri. [7.5']; Missouri Geological Survey, HA7405, scale 1:24000. | Koenig, J.W., 1967, SW Mo. stratigraphy [Hurley 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA6708, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 545 Whitfield, J.W., 2002, Bedrock geologic map of the Moselle 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-431-GS, scale 1:24000. | Whitfield, J.W., 2002, Bedrock geologic map of the St. Clair 7.5' quadrangle Franklin County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-435-GS, scale 1:24000. This report 223 Anderson, K.H. and Wharton, H.M., 1975, Reconnaissance geologic map of the Round Spring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO7508, scale 1:24000. This report 863 Willoughby, H. and Nystrom, 2005, Generalized geologic map of South Carolina (original compilation by Maybin and Nystrom, 1997): South Carolina Geological Survey Geologic Map GGMS-1, scale 1:1,000,000. Version 2.0 revised 04/2006. This report 1239 Farrand, W.R., Mickelson, D.M., Cowan, W.R., and Goebel, J.E., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1984, Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nl-16/ This report 26 Miller, D.E., 1974, [Geologic map of part of the North Fork River drainage, Missouri, portions of Gainesville, Topaz, Cureall, Willow Springs and West Plains 15' quadrangles]; Missouri Geological Survey, HA7404, scale 1:62500. | Whitfield, J.W., 1986, Bedrock geology map [Udall 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8627, scale 1:24000. This report 75 Wedge, W.K., 2001, Geologic map of the Springfield, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-01-398-GS, scale 1:100000. This report 887 Kolata, D.R., comp., 2005, Bedrock Geology of Illinois: Champaign, Ill., Illinois State Geological Survey, Illinois Map Series 14, scale 1:500,000. This report 247 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. This report 358 Lee, W., 1913, Geologic map of the Rolla [15'] quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-012, scale 1:62500. This report 473 Baker, H.W., 2002, Bedrock geologic map of the Bagnell 7.5' quadrangle Camden and Miller counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-401-GS, scale 1:24000. | Baker, H.W., 2002, Bedrock geologic map of the Lake Ozark 7.5' quadrangle Camden, Miller, and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-419-GS, scale 1:24000. This report 10 Vierrether, C.B., 2002, Bedrock geologic map of the Cedar Hill 7.5' quadrangle Franklin and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-409-GS, scale 1:24000. This report 1541 McDonald, C., Elliott, C.G., Vuke, S.M., Lonn, J.D., and Berg, R.B., 2012, Geologic map of the Butte South 30' x 60' quadrangle, southwestern Montana: Montana Bureau of Mines and Geology Open-File Report 622, 1 sheet, scale 1:100,000. This report 1606 Vuke, S.M., Wilde, E.M., and Smith, L.N., 2003, Geologic and structure contour map of the Sidney 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 478, 10 p., 1 sheet, scale 1:100,000. This report 1623 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 385 Brill, K.J., Jr., 1988, Bedrock geologic map of the Eureka 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL8803, scale 1:24000. This report 197 Stewart, D.R. and Aid, Kenneth, 1951, Geologic map of the Fredericktown 15' quadrangle, Missouri; Missouri Geological Survey, RO5106, scale 1:48000. | Stewart, D.R. and Aid, Kenneth, 1943, Preliminary geologic map of the Fredericktown district, Missouri; Missouri Geological Survey, Manuscript file, MSC-1535, RO4301, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. | Satterfield, I.R., 1980, Reconnaissance geologic map of the Higdon 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8003, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 1673 US Census State Borders This report 364 Dorman, R.C., 1960, Geologic map of the Boss 15' quadrangle, Missouri; Missouri Geological Survey, RO6012, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 369 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Buckley, E.R., 1908, Geologic and topographic map of the Bonne Terre sheet 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-009, part-2, pl-043, RO0802C, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 489 Amos, D.H., 1982, Geologic map of the Burfordville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1385, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Gordonville quadrangle, Cape Girardeau County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1823, scale 1:24000. This report 511 Johnson, W.D., 1985, Geologic map of the Morley quadrangle, Scott County, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1805, scale 1:24000. This report 215 St. Clair, S., 1920, Geologic map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO2003, scale 1:62500. | Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. This report 481 Harrison, R.W., Palmer, J.R., Hoffman, David, Vaughn, J.D., Repetski, J.E., Frederiksen, N.O., and Forman, S.L., 2002, Geologic map of the Scott City 7.5-minute quadrangle, Scott and Cape Girardeau Counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2744, scale 1:24000. | Harrison, R.W., 1999, Geologic map of the Thebes quadrangle, Illinois and Missouri; United States Geological Survey, Geologic Quadrangle Map, USGS GQ-1779, scale 1:24000. This report 467 Middendorf, M.A., 1987, Geologic map [Gainesville 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8701, scale 1:24000. | Middendorf, M.A. and Whitfield, J.W., 1987, Bedrock reconnaissance map [geologic map, Isabella 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8705, scale 1:24000. This report 336 Anderson, R.E., 1962, Geologic map of Precambrian igneous rocks in the Taum Sauk area, Missouri; Missouri Geological Survey, RO6203, scale 1:62500. | Berry, A.W., Jr., 1976, Geologic map of the western portion of the Taum Sauk caldera, St. Francois Mountains, Missouri; Missouri Geological Survey, Report of Investigations, RI-061, RO7603, scale 1:90000. This report 325 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Buckley, E.R.; Crane, G.W., 1908, Geological map of the Flat River-Leadwood areas, Missouri; Missouri Geological Survey, Volume, 2nd Series, Preliminary Map, V-009, pl-048, RO0804, scale 1:24000. This report 48 Schroeder, E.R., 1949, Geologic map of part of the Hermitage 15' quadrangle, Missouri; Missouri Geological Survey, SP4902, scale 1:48000. | Middendorf, M.A. and Schroeder, E.R., 1984, [Geology of the Wheatland 7.5' quadrangle, Missouri]; Missouri Geological Survey, Open-File Map, OFM-84-196a-GI, scale 1:24000. This report 229 Amos, D.H., 1981, Geologic map of the Chaffee quadrangle, Scott and Cape Girardeau counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1316, scale 1:24000. This report 265 Parizek, E.J., 1948, Geologic map of the Tiff and Vineland 7 1/2' quadrangles, Missouri; Missouri Geological Survey, SL4801, scale 1:24000. | Parizek, E.J., 1948, [Outcrop map of the Tiff 7.5' quadrangle, Missouri]; Missouri Geological Survey, SL4802B, scale 1:24000. This report 162 Thomson, K.C., McIntire, Harold Jr., and Lock, F.L., 1981, Geology of the Niangua quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-77-GI, scale 1:62500. | Stout, L.N. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7622, scale 1:62500. This report 1582 Lopez, D.A., 2002, Geologic map of the Lonesome Lake 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 446, 13 p., 1 sheet, scale 1:100,000. This report 838 New Mexico Bureau of Geology and Mineral Resources, 2003, Geologic map of New Mexico: New Mexico Bureau of Geology and Mineral Resources Geologic Map, scale 1:500,000 This report 1414 Farrand, W.R., and Bell, D.L., 1982, Quaternary Geology of Southern Michigan: Michigan Department of Natural Resources, Michigan Geological Survey, Geological Publication QG-01, scale 1:500,000 This report 856 Heran, W.D., Green, G.N., and Stoeser, D.B., A digital geologic map database for Oklahoma: U.S. Geological Survey Open-File Report 03-247, scale 1:250,000. This report 87 Baker, H.W. and Starbuck, E.A., 1998, Bedrock geologic map of the Day 7.5' quadrangle [Taney and Christian counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-325-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 14 Brown, J.C., Jr., 2002, Bedrock geologic map of the Ebo 7.5' quadrangle Washington County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-413-GS, scale 1:24000. This report 183 Easson, Greg and Sumner, H.S., 1982, [Geology of the Ozark Springs 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8219, scale 1:24000. This report 114 Stout, L.N., 1975, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7522, scale 1:62500. | Stout, L.N. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Niangua 15' quadrangle, Missouri; Missouri Geological Survey, SP7622, scale 1:62500. This report 175 Middendorf, M.A., 1984, [Geology of the Montreal 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8407, scale 1:24000. This report 976 US Census State Borders This report 291 Vierrether, C.B., 2001, Bedrock geologic map of the Tiff 7.5' quadrangle, Washington, St. Francois and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-394-GS, scale 1:24000. This report 78 Stout, L.N., 1974, Reconnaissance geologic map of the Grovespring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP7402, scale 1:24000. This report 267 Parizek, E.J., 1948, Geologic map of the Tiff and Vineland 7 1/2' quadrangles, Missouri; Missouri Geological Survey, SL4801, scale 1:24000. This report 1626 Vuke, S.M., Porter, K.W., Lonn, J.D., and Lopez, D.A., 2007, Geologic map of Montana [Earth surface version]: Montana Bureau of Mines and Geology Geologic Map 62, scale 1:500,000 This report 1089 US Census State Borders This report 172 Stout, L.N., 1974, Reconnaissance geologic map of the Rader 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP7401, scale 1:24000. | Thomson, K.C., 1981, Geology of the Rader, Grovespring, Duncan, and Hartville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-75-GI, scale 1:62500. This report 16 Brown, J.C., Jr., 2002, Bedrock geologic map of the Cyclone Hollow 7.5' quadrangle Franklin and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-411-GS, scale 1:24000. | Middendorf, M.A. and Starbuck, Edith, 2005, Bedrock geologic map of the Festus, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-05-510-GS, scale 1:100000. This report 421 Whitfield, J.W., 1992, Geologic map of the De Soto 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL9401, scale 1:24000. This report 1566 Vuke, S.M., Wilde, E.M., and Bergantino, R.N., 2000, Geologic map of the Hardin 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 57, 1 sheet, scale 1:100,000. This report 359 Lee, W., 1913, Geologic map of the Rolla [15'] quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-012, scale 1:62500. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 444 Starbuck, Edith, 2010, Bedrock geologic map of the Labadie 7.5' quadrangle Franklin and St. Charles counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-10-556-GS, scale 1:24000. This report 397 Starbuck, Edith, 2002, Bedrock geologic map of the Camdenton 7.5' quadrangle Camden County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-407-GS, scale 1:24000. | Starbuck, Edith, 2002, Bedrock geologic map of the Toronto 7.5' quadrangle Camden and Miller counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-423-GS, scale 1:24000. | Starbuck, Edith, Loveland, Karen, and Mulvany, Patrick, 2004, Geology of the Lake of the Ozarks central Missouri; Missouri Geological Survey, Open-File Map, OFM-04-499-GS, scale 1:70000. This report 1558 Wilde, E.M., and Bergantino, R.N., 2004, Geologic and structure contour map of the Fort Peck Lake East 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 498, 10 p., 1 sheet, scale 1:100,000. This report 37 Wedge, W.K., 1995, Bedrock geologic map of the Lampe 7.5' quadrangle, Stone County, Missouri; Missouri Geological Survey, Open-File Map, OFM-95-306-GS, scale 1:24000. | Koenig, J.W., 1960, [Reconnaissance bedrock geologic map of the Lampe 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA6004, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Reeds Spring, Garber, Lampe, and Table Rock Dam quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-112-GI, scale 1:62500. | Thomson, K.C., 1984, [Bedrock geologic map of the Lampe 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8441, scale 1:24000. | Thomson, K.C., 1984, [Outcrop map of the Lampe 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8441B, scale 1:24000. This report 219 Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 97 Whitfield, J.W., 1996, Bedrock geologic map of the Garber 7.5' quadrangle, Stone and Taney counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-96-316-GS, scale 1:24000. | Whitfield, J.W., 1995, Bedrock geologic map of the Table Rock Dam 7.5' quadrangle, Stone County and Taney counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-95-304-GS, scale 1:24000. | Brown, J.C., Jr., 1997, Bedrock geology map of the Hollister 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-322-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 1618 Vuke, S.M., Wilde, E.M., Colton, R.B., and Stickney, M.C., 2003, Geologic map of the Wibaux 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 465, 11 p., 1 sheet, scale 1:100,000. This report 179 Easson, Greg, 1986, Geology of the Manes quadrangle, Missouri [15']; Missouri Geological Survey, Open-File Map, OFM-84-187-GI, scale 1:62500. This report 1306 Minnesota Geologic Survey, D-01 database of Surficial Geology Of Minnesota, https://mngs-umn.opendata.arcgis.com/apps/UMN::d-01-surficial-geology-of-minnesota/about, accessed November 1st, 2023 This report 28 Whitfield, J.W., 1987, Bedrock geology map [Gainesville NW 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8703, scale 1:24000. This report 322 Crane, G.W., 1906, Field map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO0602, scale 1:62500. This report 402 Vierrether, C.B., 2000, Bedrock geologic map of the Williamsville 7.5' quadrangle; Butler and Wayne counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-375-GS, scale 1:24000. This report 630 US Census State Borders This report 148 Thomson, K.C., Easson, Gregory, and Bohm, Rex, 1981, Geology of the Halltown, Halltown NE, Billings, and Chesapeak [Chesapeake] quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-78-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 18 Brown, J.C., Jr., 2001, Bedrock geologic map of the Richwoods 7.5' quadrangle; Franklin, Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-390-GS, scale 1:24000. This report 1620 Porter, K.W., and Wilde, E.M., 1993, Geologic map of the Winnett 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 307, 16 p., 2 sheets, scale 1:100,000. This report 218 Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. | Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. This report 315 Whitfield, J.W., 1989, Geologic map of the Defiance 7 1/2' quadrangle, St. Charles County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-255-GI, scale 1:24000. | Harrison, R.W., 2000, Bedrock geologic map of the St. Louis 30' X 60' quadrangle, Missouri and Illinois; United States Geological Survey, Miscellaneous Geologic Investigations Map, USGS I-2533, scale 1:100000. This report 1053 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 1609 Lopez, D.A., 2002, Geologic map of the Sweet Grass Hills 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 443, 18 p., 1 sheet, scale 1:100,000. This report 1346 Borns, H.W., Gadd, N.R., LaSalle, Pierre, Martineau, Ghismond, Chauvin, Luc, Fullerton, D.S., Fulton, R.J., Chapman, W.F., Wagner, W.P., and Grant, D.R., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1987, Quaternary Geologic Map of the Quebec 4°x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nl-19/ This report 1292 US Census State Borders This report 73 Middendorf, M.A., 1994, Bedrock geologic map of the McDowell 7.5' quadrangle, Barry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-94-299-GMR, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 425 Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. | Starbuck, E.A., 2017, Geologic map of Missouri, 2017; Missouri Geological Survey, GM-02-2017, scale 1:500000. This report 1600 Wilde, E.M., and Porter, K.W., 2000, Geologic map of the Roundup 30' X 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open-File Report 404, 14 p., 1 sheet, scale 1:100,000. This report 1604 Bergantino, R.N., and Wilde, E.M., 1998, Preliminary geologic and structure contour map of the Scobey 30' x 60' quadrangle, northeastern Montana: Montana Bureau of Mines and Geology Open-File Report 360, 5 p., 1 sheet, scale 1:100,000. This report 1221 Whitfield, J.W., Ward, R.A., Denne, J.E., Holbrook, D.F., Bush, W.V., Lineback, J.A., Luza, K.V., Jensen, K.M., and Fishman, W.D., compilers, Richmond, G.M. and Weide, D.L., eds., 1994, Quaternary geologic map of the Ozark Plateau 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-15), scale 1:1,000,000 [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-15/ This report 1166 Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, scale 1:500,000. This report 59 Nuelle, L.M., 1979, Geologic map of the Sturgeon SW 7 1/2' quadrangle, Missouri; Missouri Geological Survey, MO7903, scale 1:24000. This report 79 Stout, L.N., 1974, Reconnaissance geologic map of the Grovespring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP7402, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Grovespring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8294, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1091 Thompson, D.E., 2011, Geologic Map of Mississippi; after Bickler, A.R., 1969, Geologic Map of Mississippi: Mississippi Department of Environmental Quality, Office of Geology, scale 1:500,000. This report 237 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau 7 1/2' quadrangle, Missouri; Missouri Geological Survey, PA7301, scale 1:24000. | Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. This report 500 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Satterfield, I.R., 1981, Geologic map of the Higdon 15' quadrangle, Missouri; Missouri Geological Survey, RO8103, scale 1:62500. This report 508 Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Marble Hill quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1900, scale 1:24000. This report 635 US Census State Borders This report 1550 Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1803-H, 1 sheet, scale 1:250,000. This report 488 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. | Middendorf, M.A., Whitfield, J.W., and Robertson, C.E., 1989, Geologic map of the Cape Girardeau NE 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-253-GI, scale 1:24000. This report 534 Middendorf, M.A., 2001, Bedrock geologic map of the Fletcher 7.5' quadrangle Jefferson and Washington counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-384-GS, scale 1:24000. | Vierrether, C.B., 2001, Bedrock geologic map of the Tiff 7.5' quadrangle, Washington, St. Francois and Jefferson counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-01-394-GS, scale 1:24000. This report 1128 Howard, A.D., Behling, R.E., Wheeler, W.H., Daniels, R.B., Swadley, W.C., Goldthwait, R.P., Fullerton, D.S., Sevon, W.D., Miller, R.A., compilers; Richmond, G.M., Fullerton, D.S., Christiansen, A.C., eds., 1991, Quaternary geologic map of the Blue Ridge 4° x 6° quadrangle, United States: Quaternary Geologic Atlas of the United States Map I-1420 (NJ-17), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-17/ This report 1534 Lopez, D.A., 2000, Geologic map of the Billings 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 59, 1 sheet, scale 1:100,000. This report 153 Thomson, K.C., 1982, Geology of the Buffalo NW, Buffalo, Half Way [Halfway], and Charity quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-103-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Half Way 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8296, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 548 Anderson, K.H., 1971, Reconnaissance geologic map of the Long Lane 15' quadrangle, Missouri; Missouri Geological Survey, SP7108, scale 1:62500. | Satterfield, I.R., 1976, Geologic map of the Long Lane 15' quadrangle and the Buffalo and Charity 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7615, scale 1:62500. This report 523 Weller, S. and St. Clair, S., 1922, Geological map of Ste. Genevieve County and parts of Perry and St. Francois counties [Missouri]; Missouri Geological Survey, Volume, 2nd Series, V-022, scale 1:62500. | Harrison, R.W. and Schultz, Art, 1995, Geologic map of the Coffman 7.1/2' quadrangle, Ste. Genevieve County, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-419, scale 1:24000. This report 47 Beveridge, T.R., 1949, Geologic map of the Weaubleau Creek area, Missouri; Missouri Geological Survey, SP4904, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 438 St. Clair, S., 1915, Reconnaissance geologic map of the De Soto 30' quadrangle, Missouri; Missouri Geological Survey, SL1501, scale 1:125000. | Dake, C.L., 1924, Geologic map of part of the De Soto 30' quadrangle, Missouri; Missouri Geological Survey, SL2402, scale 1:125000. This report 927 US Census State Borders This report 561 Middendorf, M.A., 1984, [Geology of the Decaturville 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8405, scale 1:24000. | Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. | McFarland, M. and Middendorf, M.A., 1984, [Geology of the Eldridge East 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8411, scale 1:24000. This report 1578 Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Geologic Investigations Map 2267, 2 sheets, scale 1:250,000. This report 1164 US Census State Borders This report 320 Crane, G.W., 1906, [Geologic map of the Bonne Terre 15' quadrangle, Missouri]; Missouri Geological Survey, RO0601B, scale 1:62500. This report 80 Stout, L.N., 1974, Reconnaissance geologic map of the Grovespring 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP7402, scale 1:24000. | Stout, L.N., 1976, Bedrock geology of the Rader, Grove Spring, Duncan and Hartville 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7620, scale 1:62500. This report 260 Satterfield, I.R., 1976, Bedrock geologic map of the Safe 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL7601, scale 1:24000. This report 555 Thomson, K.C., McIntire, Harold Jr., Beveridge, T.R., and Pulliam, J.M., 1981, Geology of the Strafford, Elkland, Fair Grove, & Bassville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-47-GI, scale 1:62500. | Middendorf, M.A., 1990, Geologic map of the Ebenezer 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP9001, scale 1:24000. This report 60 Miller, J.C., 1967, Geologic map of Saline County, Missouri; Missouri Geological Survey, MO6701, scale 1:62500. This report 553 Thomson, K.C., Easson, Gregory, McIntire, Harold Jr., and Higgins, Jerry, 1981, Geology of the Pleasant Hope, Ebenezer, Willard, and Morrisville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-81-45-GI, scale 1:62500. | Thomson, K.C., 1981, Geology of the Fair Grove 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8133, scale 1:24000. | Wedge, W.K., 2001, Geologic map of the Springfield, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-01-398-GS, scale 1:100000. | Thomson, K.C. and Easson, Gregory, 1981, Geology of the Walnut Grove, Everton, Ash Grove, and Dadeville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-76-GI, scale 1:62500. This report 88 Robertson, C.E., 1985, Field map [Goodhope 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8505, scale 1:24000. This report 199 Stewart, D.R. and Aid, Kenneth, 1951, Geologic map of the Fredericktown 15' quadrangle, Missouri; Missouri Geological Survey, RO5106, scale 1:48000. This report 1632 Schuster, J.E., 2005, Geologic map of Washington State: Washington Division of Geology and Earth Resources, Geologic Map GM-53, scale 1:500,000. This report 835 Stewart, J.H, and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey, scale 1:500,000 This report 510 Amos, D.H., 1986, Geologic map of the Lithium 7 1/2' quadrangle, Perry and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-233-GI, scale 1:24000. | Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. This report 501 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Johnson, W.D., 1985, Geologic map of the Morley quadrangle, Scott County, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1805, scale 1:24000. | Middendorf, M.A. and Whitfield, J.W., 1989, Geologic map of the Perryville West 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-262-GS, scale 1:24000. This report 962 Reed, R.C., and Daniels, J., compilers., 1987, Bedrock geology of northern Michigan: Michigan Department of Natural Resources, Geological Survey Division, scale 1:500,000. This report 1562 Vuke, S.M., and Colton R.B., 1998, Geologic map of the Glendive 30' x 60' quadrangle, eastern Montana and adjacent North Dakota: Montana Bureau of Mines and Geology Open-File Report 371, 8 p., scale 1:100,000. This report 54 McMillen, D.E., 1949, [Bedrock and alluvium geologic map of the Shawnee Bend 7.5' quadrangle, Missouri]; Missouri Geological Survey, JC4903, scale 1:24000. This report 559 Middendorf, M.A., 1983, [Geology of the Drynob 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8313, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Brownfield 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8315, scale 1:24000. This report 50 Haley, B., 1976, [Bedrock geologic map of the Eldorado Springs South 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO7616, scale 1:24000. This report 300 Whitfield, J.W. and Starbuck, E.A., 2001, Bedrock geologic map of the De Soto 7.5' quadrangle [Jefferson County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-01-382-GS, scale 1:24000. This report 142 Thomson, K.C. and Baker, D.A., 1982, Geology of the Stockton, Crisp, Cedarville, and Wagoner quadrangles, Missouri. [7.5]; Missouri Geological Survey, Open-File Map, OFM-82-106-GI, scale 1:62500. This report 552 Satterfield, I.R., 1976, Reconnaissance geologic map of the Stoutland 15' quadrangle, Missouri; Missouri Geological Survey, SP7616, scale 1:62500. | Middendorf, M.A., 1984, [Geology of the Stoutland 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8409, scale 1:24000. | Middendorf, M.A., 1984, [Geology of the Montreal 7 1/2' quadrangle, Missouri]; Missouri Geological Survey, SP8407, scale 1:24000. This report 568 Harrison, R.W., Orndorff, R.C., and Weary, D.J., 2002, Geologic map of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2767, scale 1:24000. | Weary, D.J., Harrison, R.W., Orndorff, R.C., Weems, R.E., Schindler, J.S., Repetski, J.E., and Pierce, H.A., 2015, Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins; United States Geological Survey, Scientific Investigations Map, USGS SIM-3280, scale 1:100000. This report 23 Middendorf, M.A. and Whitfield, J.W., 1987, Bedrock reconnaissance map [geologic map, Isabella 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8705, scale 1:24000. This report 449 McKnight, E.T. and Fischer, R.P., 1970, Geology and ore deposits of the Picher Field, Oklahoma and Kansas [includes Geologic map of the Wyandotte 30x30 quadrangle]; United States Geological Survey, Professional Paper, USGS PP-588, scale 1:125000. This report 417 Weary, D.J. and Weems, R.E., 2005, Geologic map of the Van Buren North quadrangle, Carter, Reynolds, and Shannon Counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2802, scale 1:24000. This report 871 Love, J.D., and Christiansen, A.C., 1985, Geologic map of Wyoming: U.S. Geological Survey, scale 1:500,000 This report 520 Crane, G.W., 1906, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, RO0601, scale 1:62500. | Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Buckley, E.R., 1908, Geologic and topographic map of the Bonne Terre sheet 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-009, part-2, pl-043, RO0802C, scale 1:62500. This report 1567 Bergantino, R.N., Patton, T.W., and Sholes, M.A., 2003, Geologic and structure contour map of the Harlem 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 468, 7 p., 1 sheet, scale 1:100,000. This report 1548 Berg, R.B., 2002, Geologic map of the Cut Bank 30' x 60' quadrangle, northwestern Montana: Montana Bureau of Mines and Geology Open-File Report 454, 10 p., 1 sheet, scale 1:100,000. This report 68 Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 504 Amos, D.H., 1985, Geologic map of the Altenburg 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-221-GI, scale 1:24000. | Amos, D.H., 1985, Geologic map of the Crosstown 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-85-222-GI, scale 1:24000. This report 1046 Scott, T.M., Campbell, K.M., Rupert, F.R., Arthur, J.D., Green, R.C., Means, G.H., Missimer, T.M., Lloyd, J.M., Yon, J.W. and Duncan, J.G., 2001, Geologic map of the state of Florida: Florida Geological Survey, Map Series 146, scale 1:1,000,000 (revised 2006). This report 861 US Census State Borders This report 409 Harrison, R.W., Orndorff, R.C., and Weary, D.J., 2002, Geologic map of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2767, scale 1:24000. This report 1546 Lopez, D.A., 2002, Geologic map of the Conrad 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open-File Report 444, 11 p., 1 sheet, scale 1:100,000. This report 513 Whitfield, J.W. and Middendorf, M.A., 1991, Bedrock geologic map of the Oak Ridge 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-260-GS, scale 1:24000. | Whitfield, J.W.; Middendorf, M.A, 1989, Geologic map of the Neeleys Landing 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-89-254-GI, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 1029 US Census State Borders This report 271 Searight, T.K. and Williams, J.H., 1953, Field map of parts of the Sullivan and Union 15' quadrangles, Missouri; Missouri Geological Survey, SL5311, scale 1:62500. | Martel Laboratories, Inc., 1980, Geology of the Saint Louis Quadrangle; United States Department of Energy, Missouri Geological Survey, SL8001, scale 1:250000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 374 Stewart, D.R. and Aid, Kenneth, 1951, Geologic map of the Fredericktown 15' quadrangle, Missouri; Missouri Geological Survey, RO5106, scale 1:48000. | McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 103 Nuelle, L.M., 1988, Interpretive geologic bedrock map [of the Jerico Springs 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8603, scale 1:24000. | Nuelle, L.M., 1986, Geologic map of the Jerico Springs 7 1/2' quad [Missouri]; Missouri Geological Survey, JO8604, scale 1:24000. This report 350 Bridge, Josiah, 1925, Geologic map of part of Cape Girardeau County, Missouri; Missouri Geological Survey, PA2507, scale 1:48000. | Bridge, Josiah, 1925, Geologic map of the Cape Girardeau 15' quadrangle, Missouri; Missouri Geological Survey, PA2509, scale 1:62500. This report 163 Thomson, K.C., McIntire, Harold Jr., and Lock, F.L., 1981, Geology of the Niangua quadrangle, MO. [15']; Missouri Geological Survey, Open-File Map, OFM-82-77-GI, scale 1:62500. This report 169 Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 140 Anderson, K.H., 1971, Reconnaissance geologic map of the Long Lane 15' quadrangle, Missouri; Missouri Geological Survey, SP7108, scale 1:62500. | Anderson, K.H., 1971, Work Map [of the Long Lane 15' quadrangle, Missouri]; Missouri Geological Survey, SP7108B, scale 1:62500. This report 363 Hendricks, H.E., 1949, Geologic map of the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, RO4903, scale 1:62500. | Hendricks, H.E., 1954, Geologic map of a portion of the Crooked Creek area in the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, Volume, 2nd Series, V-036, pl-08, RO5408, scale 1:9600. This report 264 Burghart, C.R., 1952, Geologic map of the northwest part of the Richwoods 15' quadrangle, Missouri; Missouri Geological Survey, SL5202, scale 1:62500. This report 349 Flint, R.F., 1925, Geologic map of parts of the Altenburg and Perryville 15' quadrangles, Missouri; Missouri Geological Survey, PA2501, scale 1:48000. This report 410 Harrison, R.W. and McDowell, R.C., 2003, Geologic map of the Wilderness and Handy quadrangles, Oregon, Carter, and Ripley counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2801, scale 1:24000. This report 310 Robertson, C.E., 1988, Fox Creek Fault Zone: Final Copy [Eureka 7.5' Quadrangle]; Missouri Geological Survey, SL8803B, scale 1:24000. This report 560 Middendorf, M.A., 1983, [Geology of the Brownfield 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8315, scale 1:24000. | Middendorf, M.A., 1983, [Geology of the Winnipeg 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8319, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 454 Brown, J.C., Jr., 1998, Bedrock geologic map of the Selmore 7.5' quadrangle [Christian County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-329-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Vierrether, C.B., 1998, Bedrock geologic map of the Highlandville 7.5' quadrangle [Christian and Stone counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-326-GS, scale 1:24000. This report 77 Satterfield, I.R., 1976, Geologic map of the Long Lane 15' quadrangle and the Buffalo and Charity 7 1/2' quadrangles reduced to 1:62500 scale, Missouri; Missouri Geological Survey, SP7615, scale 1:62500. This report 96 Wedge, W.K., 1997, Bedrock geology map of the Mincy 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-323-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 400 Thomson, K.C., 1984, [Bedrock geologic map of the Hurley 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8433, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 908 Virginia Division of Mineral Resources, 1993, Geologic map of Virginia, Virginia Division of Mineral Resources, series unknown, 1:500,000. This report 848 North Carolina Geological Survey, 1985, Geologic map of North Carolina: North Carolina Geological Survey General Geologic Map, scale 1:500,000. This report 484 Amos, D.H., 1981, Geologic map of the Dongola quadrangle, Bollinger and Stoddard counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1363, scale 1:24000. | Amos, D.H., 1981, Preliminary bedrock geologic map of the Whitewater 7 1/2' quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1256, scale 1:24000. This report 413 Baker, H.W., 1999, Bedrock geologic map of the Grandin SW 7.5' quadrangle [Carter and Ripley counties, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-342-GS, scale 1:24000. This report 236 Satterfield, I.R., 1973, Bedrock geologic map of the Cape Girardeau-McClure quadrangles, southeastern Missouri [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-73-GI, scale 1:24000. This report 201 Satterfield, I.R., 1980, Reconnaissance geologic map of the Higdon 7 1/2' quadrangle, Missouri; Missouri Geological Survey, RO8003, scale 1:24000. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 250 Whitfield, J.W. and Middendorf, M.A., 1991, Bedrock geologic map of the Oak Ridge 7 1/2' quadrangle, Cape Girardeau County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-260-GS, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 93 Whitfield, J.W., 1997, Bedrock geology map of the Branson 7.5' quadrangle, Taney County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-320-GS, scale 1:24000. | Whitfield, J.W., 1997, Outcrop map [Branson 7.5' quadrangle, Taney County, Missouri]; Missouri Geological Survey, HA9702, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 415 Weary, D.J. and Schindler, J.S., 2004, Geology of the Van Buren South quadrangle, Carter County, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2803, scale 1:24000. | Weary, D.J. and McDowell, R.C., 2007, Geologic map of the Big Spring quadrangle, Carter County, Missouri; United States Geological Survey, Scientific Investigations Map, USGS SIM-2804, scale 1:24000. This report 1209 Goebel, J.E., Mickelson, D.M., Ferrand, W.R., Clayton, Lee, Knox, J.C., Cahow, Adam, Hobbs, H.C., Walton, M.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1983, Quaternary Geologic Map of the Minneapolis 4° x 6° Quadrangle, United States: U.S. Geological Survey iscellaneous Investigations Series Map I-1420(NL-15), scale 1:1,000,000, [Digital edition, 2007], https://pubs.usgs.gov/imap/i-1420/nl-15/ This report 134 Thomson, K.C., 1982, Geologic map of the Reeds Spring, Garber, Lampe, and Table Rock Dam quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-112-GI, scale 1:62500. | Thomson, K.C., 1984, [Bedrock geologic map of the Garber 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8425, scale 1:24000. | Thomson, K.C., 1975, Geologic map and section of the Garber quadrangle, Missouri. [7.5']; Missouri Geological Survey, HA7507, scale 1:24000. This report 334 Robertson, F.S., 1961, Precambrian geology of the St. Francois Mountains in the Ironton 15' quadrangle, Missouri; Missouri Geological Survey, RO6101, scale 1:62500. This report 319 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Pratt, W.P., Middendorf, M.A., Satterfield, I.R., and Gerdemann, P.E., 1992, Geologic map of the Rolla 1° X 2° quadrangle, Missouri [color]; United States Geological Survey, Miscellaneous Investigations Series Map, USGS I-1998, scale 1:250000. This report 306 Middendorf, M.A., 1999, Bedrock geologic map of the Hunter 7.5' quadrangle [Carter County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-99-346-GS, scale 1:24000. This report 289 Rueff, A.W., 1971, Field map of the Doniphan 15' quadrangle, Missouri; Missouri Geological Survey, PB7102, scale 1:62500. This report 547 Middendorf, M.A., 1983, [Geology of the Drew 7.5' quadrangle, Missouri]; Missouri Geological Survey, SP8317, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 393 Crane, G.W., 1908, Geologic map of the Bonne Terre 15' quadrangle, Missouri; Missouri Geological Survey, Preliminary Map, RO0802, scale 1:62500. | Wagner, R.E., 1973, Geology of the principal part of the Washington County Barite district, Missouri; Missouri Geological Survey, RO7301, scale 1:62500. This report 494 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. | Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Amos, D.H., 1987, Geologic map of the Scopus quadrangle, Bollinger County, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1910, scale 1:24000. This report 206 Hendricks, H.E., 1949, Geologic map of the Steelville 15' quadrangle, Missouri; Missouri Geological Survey, RO4903, scale 1:62500. | Mulvany, P.S., 2005, Geologic map of the Crooked Creek impact structure, Crawford County, Missouri; Missouri Geological Survey, Open-File Map, OFM-05-511-GS, scale 1:24000. This report 252 Middendorf, M.A. and Whitfield, J.W., 1989, Geologic map of the Perryville West 7 1/2' quadrangle, Perry County, Missouri; Missouri Geological Survey, Open-File Map, OFM-91-262-GS, scale 1:24000. This report 1401 US Census State Borders This report 1532 Lopez, D.A., 2000, Geologic map of the Big Timber 30' x 60' quadrangle, south-central Montana: Montana Bureau of Mines and Geology Open-File Report 405, 17 p., 1 sheet, scale 1:100,000. This report 405 Middendorf, M.A., 2005, Bedrock geologic map of the New Florence 7.5' quadrangle Montgomery County, Missouri; Missouri Geological Survey, Open-File Map, OFM-05-504-GS, scale 1:24000. This report 81 Sumner, H.S., 1982, Geologic map of the Cabool NW 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8223, scale 1:24000. This report 459 Whitfield, J.W., 1986, Bedrock geologic map [Brushyknob 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8603, scale 1:24000. | Middendorf, M.A., 1986, Bedrock geologic map [Vanzant 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8629, scale 1:24000. This report 391 Middendorf, M.A., 1996, Bedrock geologic map of the Cape Fair 7.5' quadrangle, Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-96-314-GS, scale 1:24000. | Middendorf, M.A., 1997, Bedrock geology map of the Shell Knob 7.5' quadrangle, Taney [and Barry] County, Missouri; Missouri Geological Survey, Open-File Map, OFM-97-324-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 117 Beveridge, T.R., 1960, Reconnaissance geologic map of part of Polk County, Missouri; Missouri Geological Survey, SP6005, scale 1:125000. This report 299 Vierrether, C.B., 2000, Bedrock geologic map of the Flatwoods 7.5' quadrangle Ripley [and Butler] County, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-357-GS, scale 1:24000. This report 533 Harrison, R.W. and Schultz, Art, 1995, Geologic map of the Coffman 7.1/2' quadrangle, Ste. Genevieve County, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-419, scale 1:24000. | Schmitz, Art, and Harrison, R.W., 1994, Geologic map of the Minnith 7 1/2' quadrangle, Ste. Genevieve and Perry counties, Missouri; United States Geological Survey, Open-File Report, USGS OF-94-421, scale 1:24000. This report 869 US Census State Borders This report 213 St. Clair, S., 1920, Geologic map of the Farmington 15' quadrangle, Missouri; Missouri Geological Survey, RO2003, scale 1:62500. | This report 450 Middendorf, M.A., 1995, Bedrock geologic map of the Viola 7.5' quadrangle, Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-95-308-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. | Middendorf, M.A., 2004, Bedrock geologic map of the Viola 7.5' quadrangle Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-04-498-GS, scale 1:24000. | Middendorf, M.A., 1996, Bedrock geologic map of the Cape Fair 7.5' quadrangle, Barry and Stone counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-96-314-GS, scale 1:24000. This report 518 McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. | McKnight, E.T. and Fischer, R.P., 1970, Geology and ore deposits of the Picher Field, Oklahoma and Kansas [includes Geologic map of the Wyandotte 30x30 quadrangle]; United States Geological Survey, Professional Paper, USGS PP-588, scale 1:125000. This report 311 Burke, R.F., 1951, Bedrock geologic map of the Saint Clair 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL5102, scale 1:24000. This report 475 Starbuck, Edith, 2002, Bedrock geologic map of the Camdenton 7.5' quadrangle Camden County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-407-GS, scale 1:24000. | Baker, H.W., 2002, Bedrock geologic map of the Lake Ozark 7.5' quadrangle Camden, Miller, and Morgan counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-419-GS, scale 1:24000. This report 429 Buehler, Henry A., 1937, Biennial report of the State Geologist transmitted to the Fifty-ninth General Assembly, 1937; Missouri Geological Survey and Water Resources, BR-59, 53 p., 8 apps, pl-02 and pl-09. This report 382 Whitfield, J.W., 1996, Bedrock geologic map of the Union 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SL9601, scale 1:24000. This report 98 Middendorf, M.A., 1998, Bedrock geologic map of the Jenkins 7.5' quadrangle [Barry County, Missouri]; Missouri Geological Survey, Open-File Map, OFM-98-328-GS, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 395 Clark, E.L., 1939, [Geologic map of the Cassville 15' quadrangle, Missouri, work map]; Missouri Geological Survey, HA4102, scale 1:48000. | Clark, E.L., 1941, [Geologic map of the Cassville 15' quadrangle, Missouri, work map]; Missouri Geological Survey, HA4104, scale 1:62500. | Thomson, K.C., 1984, [Bedrock geologic map of the Eagle Rock 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8415, scale 1:24000. | Thomson, K.C., 1984, [Well location and outcrop map of the Eagle Rock 7.5' quadrangle, Missouri]; Missouri Geological Survey, HA8415B, scale 1:24000. | Middendorf, M.A., 1999, Bedrock geologic map of the Table Rock Lake, Missouri 30' X 60' quadrangle; Missouri Geological Survey, Open-File Map, OFM-99-350-GS, scale 1:100000. This report 92 Smith, D.C., 1988, Recon. geologic map [Nashville 7.5' quadrangle, Missouri]; Missouri Geological Survey, JO8713, scale 1:24000. This report 221 Sides, J.R., 1983, Geologic map of exposed Precambrian rocks in the Lake Killarney quadrangle, Missouri [7.5]; Missouri Geological Survey, Open-File Map, OFM-83-162-MR, scale 1:24000. This report 115 Rueff, A.W. and Satterfield, I.R., 1976, Reconnaissance geologic map of part of the Richland 15' quadrangle, Missouri; Missouri Geological Survey, SP7623, scale 1:62500. This report 129 Williams, J.H. and Collins, Tom, 1969, Geol for soil study US Forest Service [Shell Knob 15' quadrangle, Missouri]; Missouri Geological Survey, HA6903, scale 1:62500. This report 503 Amos, D.H., 1984, Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1674, scale 1:24000. | Johnson, W.D., 1985, Geologic map of the Morley quadrangle, Scott County, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1805, scale 1:24000. | Nelson, W.J., 1998, Bedrock geologic map of the Paducah 1° x 2° quadrangle, Illinois, Indiana, Kentucky and Missouri; United States Geological Survey, USGS Bulletin 2150-B, scale 1:250000. This report 293 Vierrether, C.B., 2000, Bedrock geologic map of the Stringtown 7.5' quadrangle; Butler County, Missouri; Missouri Geological Survey, Open-File Map, OFM-00-371-GS, scale 1:24000. This report 1559 Wilde, E.M., and Bergantino, R.N., 2004, Geologic and structure contour map of the Fort Peck Lake West 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 499, 8 p., 1 sheet, scale 1:100,000. This report 4 Little, W.W., 2002, Bedrock geologic map of the Barnumton 7.5' quadrangle Camden County, Missouri; Missouri Geological Survey, Open-File Map, OFM-02-403-GS, scale 1:24000. This report 952 U.S. Geological Survey, 2014, USGS Small-scale Dataset - 1:1,000,000-Scale Coastline of the United States 201403 Shapefile: U.S. Geological Survey Data Release, https://www.sciencebase.gov/catalog/item/581d051de4b08da350d523be. This report 170 Thomson, K.C., 1981, Geology of the Cedar Gap, Mansfield, Mansfield NW, and Mansfield NE quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-74-GI, scale 1:62500. This report 1067 US Census State Borders This report 51 McCracken, Mary H., 1971, Structural features of Missouri; Missouri Geological Survey and Water Resources, RI-049, vi+99 p., 1 pl., 11 figs. This report 565 Weems, R.E., 2002, Geologic map of the Low Wassie quadrangle, Oregon and Shannon counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2719, scale 1:24000. | Orndorff, R.C., 2003, Geologic map of the Fremont quadrangle, Shannon, Carter, and Oregon counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2775, scale 1:24000. This report 968 US Census State Borders This report 1535 Vuke, S.M., Heffern, E.L., Bergantino, R.N., and Colton, R.B., 2001, Geologic map of the Birney 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open-File Report 431, 12 p., 1 sheet, scale 1:100,000. This report 241 Amos, D.H., 1982, Geologic map of the Millersville quadrangle, Cape Girardeau and Bollinger Counties, Missouri; United States Geological Survey, Miscellaneous Field Studies, USGS MF-1459, scale 1:24000. This report 567 Harrison, R.W., Orndorff, R.C., and Weary, D.J., 2002, Geologic map of the Stegall Mountain 7.5-minute quadrangle, Shannon and Carter counties, Missouri; United States Geological Survey, Geologic Investigations Series, USGS I-2767, scale 1:24000. | Weary, D.J. and Weems, R.E., 2005, Geologic map of the Van Buren North quadrangle, Carter, Reynolds, and Shannon Counties, Missouri; United States Geological Survey, Geologic Investigations Series Map, USGS I-2802, scale 1:24000. This report 171 Thomson, K.C., 1981, Geology of the Rader, Grovespring, Duncan, and Hartville quadrangles, MO. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-75-GI, scale 1:62500. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 108 Thompson, T.L., 1975, Bedrock geologic map of the Drew 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP7504, scale 1:24000. This report 257 Amos, D.H., 1986, Geologic map of the Lithium 7 1/2' quadrangle, Perry and Ste. Genevieve counties, Missouri; Missouri Geological Survey, Open-File Map, OFM-86-233-GI, scale 1:24000. This report 398 Thomson, K.C., 1982, Geology of the Cliquot, Polk, Bolivar, and Cedar Vista quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-104-GI, scale 1:62500. | Thomson, K.C., 1982, Geology of the Bear Creek, Fair Play, Aldrich, and Bona quadrangles, Missouri. [7.5']; Missouri Geological Survey, Open-File Map, OFM-82-105-GI, scale 1:62500. | Thomson, K.C., 1982, Geologic map of the Aldrich 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8248, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Cedar Vista 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8268, scale 1:24000. | Thomson, K.C., 1982, Geologic map of the Bolivar 7 1/2' quadrangle, Missouri; Missouri Geological Survey, SP8258, scale 1:24000. | Middendorf, M.A., Thomson, K.C., Eason, G.L., and Sumner, H.S., 1987, Bedrock geologic map of the Springfield 1° X 2° quadrangle, Missouri; United States Geological Survey, Miscellaneous Field Studies Map, USGS MF-1830-D, scale 1:250000. This report 1652 Lewis, R.S., Link, P.K., Stanford, L.R., and Long, S.P., 2012, Geologic map of Idaho: Idaho Geological Survey, Map M-9, scale 1:750,000. This report Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. ContactsAndFaults_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. MapSourceID Identifies source map. Foreign key to DataSources table. This Report Unrepresentable domain GeologicLines Lines that represent dikes, coal seams, ash beds, fold hinge-surface traces, isograds, and other linear features. All have these properties: (A) They do not participate in map-unit topology. (B) They correspond to features that exist within the Earth and may be concealed beneath younger, covering, material. (C) They are located with an accuracy that likely can be estimated. In the original file geodatabase, this dataset is found within the GeologicMap feature dataset. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Shape Internal geometry object ESRI Unrepresentable domain Shape_Length Internal feature length, double ESRI Unrepresentable domain Type Classifier that specifies what kind of geologic feature is represented by a database element: that a certain line within feature class ContactsAndFaults is a contact, or thrust fault, or water boundary; or that a point in GeochronPoints represents a K-Ar date. GeMS limit of significant glacial advance The extent reached by the glacier during an interval of positive net balance. Often corresponds with significant sediment deposition. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. IsConcealed Flag for contacts and faults covered by overlying map unit. GeMS Unrepresentable domain LocationConfidenceMeters Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. GeMS Positive real number. Value of -9, -99, or -999 indicates value is unknown. ExistenceConfidence Confidence that feature exists. GeMS certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. IdentityConfidence Confidence that feature is correctly identified. GeMS certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain DataSourceID Source of data; foreign key to table DataSources. GeMS 1340 Fullerton, D.S., Cowan, W.R., Savon, W.D., Goldthwait, R.P., Ferrand, W.R., Muller, E.H., Bahling, R.E., and Stravers, J.A., compilers; Fullerton, D.S., and Richmond, G.M., eds.; 1991, Quaternary Geologic Map of the Lake Erie 4° x 6° Quadrangle, United States and Canada, U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-17), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-17/ This report 935 Gray, H.H., Ault, C.H., and Keller, S.J., 1987, Bedrock geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 48, scale 1:500,000 This report 1065 Kansas Geological Survey, 2008, Surficial Geology of Kansas: Kansas Geological Survey, Map M-118, scale 1:500,000 This report 1388 Gray, H.H., Bleuer, N.K., Lineback, J.A., Swadley, W.C., Richmond, G.M., Miller, R.A., Goldthwait, R.P., and Ward, R.A. compilers; Richmond, G.M., Fullerton, D.S., and Bush, C.A., eds., 1991, Quaternary geologic map of the Louisville 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-16), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-16/ This report 929 Clayton, L., Moran, S.R., Bluemle, J.P., and Carlson, C.G., 1980, Geologic map of North Dakota: U.S. Geological Survey, scale 1:500,000 This report 1669 Pavey, R. R.; Goldthwait, R. P.; Brockman, S. C., Hull, D. N., Swinford, E. M., and Van Horn, R.G, 1999, Quaternary Geology of Ohio: Ohio Division of Geological Survey, Map No. 2, scale 1:500,000 This report 1281 Fullerton, D.S., Sevon, W.D., Muller, E.H., Judson, Sheldon, Black, R.F., Wagner, P.W., Hartshorn, J.H., Chapman, W.F., and Cowan, W.D., compilers; Fullerton, D.S., ed., 1992, Quaternary Geologic Map of the Hudson River 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-18), scale 1:1,000,000, [Digital edition, 2005], https://pubs.usgs.gov/imap/i-1420/nk-18/ This report 1419 Digital database of the Montana state geologic map, submitted to STATEMAP in GeMS This report 1221 Whitfield, J.W., Ward, R.A., Denne, J.E., Holbrook, D.F., Bush, W.V., Lineback, J.A., Luza, K.V., Jensen, K.M., and Fishman, W.D., compilers, Richmond, G.M. and Weide, D.L., eds., 1994, Quaternary geologic map of the Ozark Plateau 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NJ-15), scale 1:1,000,000 [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-15/ This report 1166 Lineback, J.A., 1979, Quaternary deposits of Illinois: Illinois State Geological Survey, scale 1:500,000. This report 1239 Farrand, W.R., Mickelson, D.M., Cowan, W.R., and Goebel, J.E., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1984, Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nl-16/ This report 1128 Howard, A.D., Behling, R.E., Wheeler, W.H., Daniels, R.B., Swadley, W.C., Goldthwait, R.P., Fullerton, D.S., Sevon, W.D., Miller, R.A., compilers; Richmond, G.M., Fullerton, D.S., Christiansen, A.C., eds., 1991, Quaternary geologic map of the Blue Ridge 4° x 6° quadrangle, United States: Quaternary Geologic Atlas of the United States Map I-1420 (NJ-17), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nj-17/ This report 1173 Swinehart, J.B., Dreeszen, V.H., Richmond, G.M., Tipton, M.J., Bretz, Richard, Steece, F.V., Hallberg, G.R., and Goebel, J.E., compilers; Richmond, G.M., ed., 1994, Quaternary geologic map of the Platte River 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-14), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-14/ This report 1376 Hartshorn, J.H., Thompson, W.B., Chapman, W.F., Black, R.F., Richmond, G.M., Grant, D.R., and Fullerton, D.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1991, Quaternary Geologic Map of the Boston 4° x 6° Quadrangle, United States and Canada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420(NK-19), scale 1:1,000,000, [Digital edition, 2006], https://pubs.usgs.gov/imap/i-1420/nk-19/ This report 1185 Hallberg, G.R., Lineback, J.A., Mickelson, D.M., Knox, J.C., Goebel, J.E., Hobbs, H.C., Whitfield, J.W., Ward, R.A., Boellstorff, J.D., Swinehart, J.B., and Dreeszen, V.H., compilers; Richmond, G.M., Fullerton, D.S., and Christiansen, A.C., eds., 1994, Quaternary geologic map of the Des Moines 4° x 6° Quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-15), scale 1:1,000,000, [Digital edition, 2008], https://pubs.usgs.gov/imap/i-1420/nk-15/ This report 1095 Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic map of South Dakota: South Dakota Geological Survey General Map G-10, scale 1:500,000. This report 1160 Lineback, J.A., Bleuer, N.K., Mickelson, D.M., Ferrand, W.R., and Goldthwait, R.P., compilers; Richmond, G.M., and Fullerton, D.S., eds., 1983, Quaternary geologic map of the Chicago 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NK-16), scale 1:1,000,000, [Digital edition, 2002], https://pubs.usgs.gov/imap/i-1420/nk-16/ This report 1209 Goebel, J.E., Mickelson, D.M., Ferrand, W.R., Clayton, Lee, Knox, J.C., Cahow, Adam, Hobbs, H.C., Walton, M.S., compilers; Richmond, G.M. and Fullerton, D.S., eds., 1983, Quaternary Geologic Map of the Minneapolis 4° x 6° Quadrangle, United States: U.S. Geological Survey iscellaneous Investigations Series Map I-1420(NL-15), scale 1:1,000,000, [Digital edition, 2007], https://pubs.usgs.gov/imap/i-1420/nl-15/ This report 1203 Fullerton, D.S., Bluemle, L.C., Steece, F.V., Tipton, M.J., Bretz, Richard, and Goebel, J.E., compilers; Fullerton, D.S., ed., 1995, Quaternary geologic map of the Dakotas 4° x 6° quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NL-14), scale 1:1,000,000, [Bush, C.A., Digital edition, 2011], https://pubs.usgs.gov/imap/i-1420/nl-14/ This report Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. GeologicLines_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. MapSourceID Identifies source map. Foreign key to DataSources table. This Report Unrepresentable domain MapUnitLines Lines that record distribution of map units of narrow, linear extent on the particular map horizon. In the original file geodatabase, this dataset is found within the GeologicMap feature dataset. GeMS OBJECTID Internal feature number ESRI Unrepresentable domain Shape Internal geometry object ESRI Unrepresentable domain Shape_Length Internal feature length, double ESRI Unrepresentable domain MapUnit Short plain-text identifier of the map unit. Foreign key to DescriptionOfMapUnits table. GeMS Os Sedimentary rocks This Report eTs Sedimentary rocks This Report Zm Metamorphic and igneous rocks This Report Ds Sedimentary rocks This Report Xif Iron formation This Report PNs Sedimentary rocks This Report PZm Undifferentiated metamorphic rocks This Report Ms Sedimentary rocks This Report Ss Sedimentary rocks This Report PRu Undifferentiated Proterozoic rocks This Report CAZms Metasedimentary rocks This Report PNsl Sedimentary rocks This Report Zms Metasedimentary rocks This Report CAm Metamorphic rocks This Report PZms Sedimentary and metasedimentary rocks This Report Olms Sedimentary rocks This Report Dsl Sedimentary rocks This Report PZpCmg Metaigneous rocks This Report Aif Iron formation This Report IsConcealed Flag for contacts and faults covered by overlying map unit. GeMS Unrepresentable domain LocationConfidenceMeters Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. GeMS Positive real number. Value of -9, -99, or -999 indicates value is unknown. ExistenceConfidence Confidence that feature exists. GeMS certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. IdentityConfidence Confidence that feature is correctly identified. GeMS certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain PlotAtScale At what scale (or larger) should this observation or analysis be plotted? At smaller scales, it should not be plotted. Useful to prevent crowding of display at small scales and to display progressively more data at larger and larger scales. Value is scale denominator. GeMS Positive real number. DataSourceID Source of data; foreign key to table DataSources. GeMS 1055 Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic map of Georgia: Georgia Geological Survey, scale 1:500,000 This report 1095 Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic map of South Dakota: South Dakota Geological Survey General Map G-10, scale 1:500,000. This report 1091 Thompson, D.E., 2011, Geologic Map of Mississippi; after Bickler, A.R., 1969, Geologic Map of Mississippi: Mississippi Department of Environmental Quality, Office of Geology, scale 1:500,000. This report 908 Virginia Division of Mineral Resources, 1993, Geologic map of Virginia, Virginia Division of Mineral Resources, series unknown, 1:500,000. This report 983 Jirsa, M.A., Boerboom, T.J., Chandler, V.W., Mossler, J.H., Runkel, A.C., and Setterholm, D.R., 2011, Geologic map of Minnesota, Bedrock geology: Minnesota Geological Survey State Map Series S-21, scale 1:500,000. This report 623 Slucher, E.R., Swinford, E.M., Larsen, G.E., Schumacher, G.A., Shrake, D.L., Rice, C.L., Caudill, M.R., Rea, R.G., and Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey, Map BG-1, scale 1:500,000. This report 1073 Noger, M.C., 1988, Geologic map of Kentucky: U.S. Geological Survey, scale 1:500,000. This report 1645 Osborne, W.E., Szabo, M.W., Copeland Jr., C.W., and Neathery, T.L., 1989, Geologic Map of Alabama: Geological Survey of Alabama Special Map 221, scale 1:500,000. This report 935 Gray, H.H., Ault, C.H., and Keller, S.J., 1987, Bedrock geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 48, scale 1:500,000 This report Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. MapUnitLines_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. MapSourceID Identifies source map. Foreign key to DataSources table. This Report Unrepresentable domain Source_MapUnit Short, easily understood ASCII-character identifier for the source map unit. Prefixed with a MapSourceID value (from Source_DescriptionOfMapUnits) to differentiate identically-named source map units from different source maps. Otherwise conceptually equivalent to the "MapUnit" field in the GeMS "DescriptionOfMapUnits" table. This Report Unrepresentable domain U.S. Geological Survey NGMDB mailing

12201 Sunrise Valley Dr., MS 908

Reston VA 20192 NA ngmdb@usgs.gov Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Digital Data https://doi.org/10.5066/P146VGVM None 20250403 U.S. Geological Survey NGMDB mailing

12201 Sunrise Valley Dr., MS 908

Reston VA 20192 NA ngmdb@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999