Hunter J. Broeder Sara C. Gonzalez John D. Horton 20250530 vector digital data U.S. Geological Survey data release DOI: 10.5066/P14RN3ZD Denver, Colorado U.S. Geological Survey Additional information about Originators: Broeder, H.J., https://orcid.org/0009-0009-7827-7345; Gonzalez, S.C., https://orcid.org/0009-0007-0461-5773; Horton, J.D., https://orcid.org/0000-0003-2969-9073 Suggested citation: Broeder, H.J., Gonzalez, S.C., and Horton, J.D., 2025, GIS data for geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado: U.S. Geological Survey data release, https://doi.org/10.5066/P14RN3ZD. https://doi.org/10.5066/P14RN3ZD George L. Snyder 1980 publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1112 Denver, CO U.S. Geological Survey Suggested citation: Snyder, G.L., 1980, Geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1112, scale 1:48,000, https://doi.org/10.3133/i1112. https://doi.org/10.3133/i1112 This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado (Snyder, 1980). Attribute tables and geospatial features (points, lines, and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map as published in USGS Miscellaneous Investigations Series Map I-1112. The 218,613-acre map area represents the geology at a publication scale of 1:48,000. References: Snyder, G.L., 1980, Geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1112, scale 1:48,000, https://doi.org/10.3133/i1112. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10. The purpose of this data release is to provide Geologic Map Schema (GeMS)-compliant data for the geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado. Development and publication of modern GIS data for geologic maps is foundational and high priority to the USGS Mineral Resources Program (MRP) to facilitate on-going research and other activities pertaining to critical mineral deposits as well as to other geologic and geophysical mapping efforts, petrologic studies, and mineral resource assessments. NorthernParkRange_I-1112.gdb 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/. A shapefile version 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. The Esri file geodatabase (NorthernParkRange_I-1112.gdb) contains the following elements: --GeologicMap: feature dataset (subdirectory) containing the following feature classes (GIS layers): ----CartographicLines: line layer (feature class) representing cross section lines and a wilderness boundary. ----ContactsAndFaults: line layer representing locations of contacts and faults. ----FossilPoints: point layer representing fossil localities. ----GenericPoints: point layer representing prospect pits, borrow pits, and other manmade features. ----GeologicLines: line layer representing the locations of fold axes, recessional moraine ridges, and other linear features. ----MapUnitPolys: polygon layer representing the distribution of geologic map units. ----OrientationPoints: point layer representing structure measurements, such as orientations of bedding, foliation, and lineation. ----OverlayPolys: polygon layer representing the distribution of boulder streams. --DataSources: table that lists sources and (or) references used to derive spatial features (points, lines, and polygons) and attribute information. --DescriptionOfMapUnits: table of map unit descriptions derived from the collar of the geologic map. The hierarchical order of map units is coded in the HierarchyKey field. --GeoMaterialDict: table that defines and lists lithology terms in hierarchical order used in the GeoMaterial field of the DescriptionOfMapUnits table. The standardized vocabulary is available in Appendix 1 of the GeMS documentation. --Glossary: table that defines and lists sources of terms used in the database. --RepurposedSymbols: table that lists standard FGDC geologic map symbols that have been repurposed. Reference: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema)- A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10. 20250530 publication date Complete None planned -106.9477 -106.5697 40.7504 40.4995 ISO 19115 Topic Category geoscientificInformation USGS Thesaurus bedrock geologic units geographic information systems geologic maps geology geospatial datasets structural geology None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics and Geochemistry Science Center GGGSC National Cooperative Geologic Mapping Program NCGMP National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:67411b3fd34e90d2c0e2dc69 Geographic Names Information System (GNIS) Jackson County Routt County Park Range Common geographic areas Colorado CO Mount Zirkel Wilderness None. Please see 'Distribution Info' for details. These data are intended for use at approximately 1:48,000-scale or smaller. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. John D. Horton U.S. Geological Survey, ROCKY MOUNTAIN REGION Physical Scientist mailing address

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-1921 303-236-3200 jhorton@usgs.gov Work was accomplished by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center (GGGSC) with support from the Mineral Resources Program (MRP) and the National Geologic Map Database (NGMDB). Microsoft Windows 11 Enterprise, Version 23H2 (Build 22631.5189); Esri ArcGIS Pro 3.4.3 Unique values in attribute fields were checked through frequency analyses. The unique values in each attribute field were reviewed and checked for spelling, consistency of terms, accuracy, adherence to established vocabularies, and completeness. Text terms and values entered by USGS authors were reviewed and verified. Confidence that a feature exists and confidence that a feature is correctly identified are described in per-feature attributes ExistenceConfidence and IdentityConfidence. GIS layer and attribute information were digitized and extracted directly into the GeMS database structure. Attribute values were modified for consistency with GeMS terminology. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. Point, line, and polygon features were digitized from the printed map (Snyder, 1980) and quality assured for completeness. Textual information from the original printed map 'Description of Map Units' section was transcribed into the DescriptionOfMapUnits table. Horizontal accuracy of point, line, and polygon features is dependent on the accuracy of the 1:48,000 scale source map. Map publication techniques employed in 1980 resulted in variable line quality and accuracy. Estimated accuracy of horizontal location, provided on a per-feature basis in the attribute field LocationConfidenceMeters in GeMS, was assigned a value of -9 indicating unknown. Vertical accuracy testing does not apply to this dataset. George L. Snyder 1980 Publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1112 Denver, CO U.S. Geological Survey Suggested citation: Snyder, G.L., 1980, Geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1112, scale 1:48,000. https://doi.org/10.3133/i1112. https://doi.org/10.3133/i1112 Hardcopy 1980 publication date Snyder, 1980 Original published geologic map. Georeferenced image from the National Geologic Map Database (NGMDB) accessed 2024 at: https://ngmdb.usgs.gov/Prodesc/proddesc_8972.htm U.S. Geological Survey National Cooperative Geologic Mapping Program 2020 publication U.S. Geological Survey Techniques and Methods book 11, chapter B10 Reston, Virginia U.S. Geological Survey Suggested citation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org/10.3133/tm11B10 https://doi.org/10.3133/tm11B10 Digital and/or Hardcopy 2020 publication date USGS NCGMP, 2020 Database schema and some attribute definitions. Klaus K.E. Neuendorf James P. Mehl, Jr. Julia A. Jackson 2011 fifth publication Alexandria, Virginia American Geological Institute Suggested citation: Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., 2011, Glossary of Geology (5th ed.): Alexandria, Va., American Geological Institute, 779 p. Digital and/or Hardcopy 2011 publication date Neuendorf and others, 2011 Definitions of some attributes. Federal Geographic Data Committee 2006 publication Reston, Virginia Federal Geographic Data Committee Suggested citation: 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, https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php Digital and/or Hardcopy 2006 publication date FGDC, 2006 Standardized geologic map symbolization used for symbolizing the map. The printed map was obtained from the National Geologic Map Database (NGMDB) and georeferenced by the USGS using evenly distributed control points. The data were captured by staff at East View Geospatial by heads-up digitizing of the georeferenced version of the Snyder (1980) printed geologic map and saved as an Esri file geodatabase in GeMS format. Snyder, 1980 2022 Attributes were populated to conform to the Geologic Map Schema (GeMS) standard for geologic map publications (USGS NCGMP, 2020). Definitions of these values are derived from the printed map (Snyder, 1980), GeMS (USGS NCGMP, 2020), and from the Glossary of Geology (Neuendorf and others, 2011). Map unit colors were matched to the original publication as best possible and are provided as RGB values in the AreaFillRGB field of the DescriptionOfMapUnits table. Map unit colors are also provided in the custom Esri Style file. Geologic map symbolization was also matched to the original publication as best possible using the FGDC Digital Cartographic Standard for Geologic Map Symbolization (FGDC, 2006). These values are provided in the Symbol attribute fields and the included Esri Style file. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. The geodatabase was confirmed to be GeMS compliant using validation tools. USGS NCGMP, 2020 Snyder, 1980 Neuendorf and others, 2011 FGDC, 2006 2025 Vector Entity point 2,594 G-polygon 2,802 String 5,443 Universal Transverse Mercator 13 0.9996 -105.0 0.0 500000.0 0.0 coordinate pair 0.6096 0.6096 metre North_American_Datum_1927 Clarke 1866 6378206.4 294.978698213898 Attribute Fields The attribute fields contain attribute information associated with features or records in the data set. The translated shapefile field name that is limited to 10 characters is provided in square brackets as needed. Attribute fields occur in data layer(s) and/or tables noted in parentheses. USGS Authors Age (DescriptionOfMapUnits) Age of map unit as shown in Description of Map Units. USGS NCGMP, 2020 Examples of values: "Upper Cretaceous" or "Precambrian X (Paleoproterozoic)" AlternateSampleID [AltSamID] (FossilPoints) The alternative identifier of a fossil sample. USGS NCGMP, 2020 All values NULL because no alternate sample identifiers were provided on the original map. AreaFillPatternDescription [PatDes] (DescriptionOfMapUnits) Text description (for example, "random small red dashes) provided as a convenience for users who must recreate symbolization. USGS NCGMP, 2020 Example of values: "evenly spaced blue diagonal lines" AreaFillRGB [RGB] (DescriptionOfMapUnits) {Red, Green, Blue} tuples that specify the suggested color (for example, "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. USGS NCGMP, 2020 Example of values: "217,120,168" Azimuth (GenericPoints, OrientationPoints) Strike or trend, measured in degrees clockwise from geographic North. Use right-hand rule (dip is to right of azimuth direction). Horizontal planar features may have any azimuth. USGS NCGMP, 2020 0 359 degrees (angular measure) CartographicLines_ID [CarLin_ID] (CartographicLines) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "CAL1" ContactsAndFaults_ID [CAFs_ID] (ContactsAndFaults) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "CAF0001" DataSources_ID [DatSrc_ID] (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 DAS01 Snyder, 1980 Snyder, G.L., 1980, Geologic map of the central part of the northern Park Range, Jackson and Routt Counties, Colorado: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1112, scale 1:48,000, https://doi.org/10.3133/i1112. DAS02 Neuendorf and others, 2011 Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., 2011, Glossary of Geology (5th ed.): Alexandria, Va., American Geological Institute, 779 p. DAS03 USGS NCGMP, 2020 U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org/10.3133/tm11B10. DAS04 Fenton, 1965 Fenton, Michael, 1965, The geology of parts of Mad Creek, Clark, Floyd Peak quadrangles of Routt County, Colorado: Univ. Wyoming M.S. thesis, 39 p., https://www.wsgs.wyo.gov/products/wsgs-1995-ip-03.pdf. DAS05 Hail, 1965 Hail, 1965, Geology of northwestern North Park, Colorado: U.S. Geological Survey Bulletin, 1188, 133 p., https://doi.org/10.3133/b1188. DAS06 Hail, 1968 Hail, 1968, Geology of southwestern North Park and vicinity, Colorado: U.S. Geological Survey Bulletin, 1257, 119 p., https://doi.org/10.3133/b1257. DAS07 Rittmann, 1952 Rittmann, Alfred, 1952, Nomenclature of volcanic rocks, proposed for use in the catalogue of volcanoes, and key-tables for the determination of volcanic rocks: Bull. Volcano, ser. 2, v. 12, p. 73-102., https://doi.org/10.1007/BF02596015. DataSourceID [DatSrcID] (CartographicLines, ContactsAndFaults, GenericPoints, GeologicLines, MapUnitPolys, OverlayPolys) Source of data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information Definition (GeoMaterialDict, Glossary) Plain-language definition. USGS NCGMP, 2020 Example of values: "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." DefinitionSourceID [DefSrcID] (Glossary) Source of definition; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information DAS02 Neuendorf and others, 2011 See DataSources_ID attribute information DAS03 USGS NCGMP, 2020 See DataSources_ID attribute information Description [Descr] (ContactsAndFaults, DescriptionOfMapUnits, GeologicLines) Free-format text description of map unit or the Type and certainty of a line feature. Commonly structured according to one or more accepted traditions (for example, lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints). USGS NCGMP, 2020 Examples of values: "Red calcareous siltstone and shale; contains 5 percent quartz pebbles in lower half. 122-244 m thick, may be tectonically thickened in fold troughs" DescriptionOfMapUnits_ID [DMapUns_ID] (DescriptionOfMapUnits) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DMU01" DescriptionSourceID [DesSrcID] (DescriptionofMapUnits) Sources of map unit description; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DAS01" and "DAS01 | DAS05 | DAS06". See DataSources_ID attribute information ExistenceConfidence [ExiConf] (ContactsAndFaults, GeologicLines) Confidence that feature exists. USGS NCGMP, 2020 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. USGS NCGMP, 2020 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." USGS NCGMP, 2020 unspecified Used for the boundary of a map where no confidence is specified. USGS NCGMP, 2020 FgdcIdentifier [FgdIde] (RepurposedSymbols) Identifier for symbol from FGDC Digital Cartographic Standard for Geologic Map Symbolization. USGS NCGMP, 2020 Example of values: "06.42" FieldSampleID [FieSamID] (FossilPoints) Sample number given at time of collection. USGS NCGMP, 2020 Examples of values: "1" or "20" FossilAge (FossilPoints) Age interpretation for a sample or the age of the map unit as shown in the FossilForm field. USGS NCGMP, 2020 Examples of values: "Upper Cretaceous" or "Upper and Middle Jurassic" FossilAgeSourceID [FosAgeSrc] (FossilPoints) Identifies source of age interpretation for this sample. Used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information FossilForms [FosFor] (FossilPoints) Free-format text description for the sample(s). USGS NCGMP, 2020 Example of values: "Charophyta, Aclistochara bransoni Peck, Stellatochara obovata (Peck), other gyrogonites, Late Jurassic age, Brushy Basin Member of Morrison Formation (R. E. Peck, written communication, 5/3/66)" FossilFormsSourceID [FosForSrc] (FossilPoints) Identifies source of feature and its attributes. Used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information FossilPoints_ID [FosPoi_ID] (FossilPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "FSP01" FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP, 2020 Examples of values: "Fine-grained granite of the Mount Ethel Pluton" or "Chugwater Formation, Red Peak Member and Satanka(?) Formation" GenericPoints_ID [GenPoi_ID] (GenericPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of value: "GNP01" GeologicLines_ID [GeoLin_ID] (GeologicLines) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "GEL0001" GeoMaterial [GeoMat] (DescriptionOfMapUnits, GeoMaterialDict) Categorization of map unit based on lithologic and genetic character; term selected from NGMDB standard term list defined in Appendix 1 of GeMS documentation. USGS NCGMP, 2020 Examples of values: "------Alluvial Sediment" or "----Schist and gneiss, of Sedimentary-rock origin" GeoMaterialConfidence [GeoMatConf] (DescriptionOfMapUnits) Describes appropriateness of GeoMaterial term for describing the map unit. USGS NCGMP, 2020 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. USGS NCGMP, 2020 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. USGS NCGMP, 2020 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. USGS NCGMP, 2020 Glossary_ID [Glo_ID] (Glossary) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of value: "GLO01" HierarchyKey [HKey] (DescriptionOfMapUnits, GeoMaterialDict) 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 is the same length to allow text-based sorting of table entries. USGS NCGMP, 2020 Examples of values: "01" or "04-04-01" IdentityConfidence [IdeConf] (ContactsAndFaults, GeologicLines, MapUnitPolys, OrientationPoints, OverlayPolys) Confidence that feature is correctly identified. USGS NCGMP, 2020 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. USGS NCGMP, 2020 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." USGS NCGMP, 2020 unspecified Used for the boundary of a map where no confidence is specified. USGS NCGMP, 2020 Inclination [Inc] (OrientationPoints) Dip or plunge, measured in degrees down from horizontal. Values of -9 indicate value unknown. USGS NCGMP, 2020 -9 90 degrees (angular measure) IndentedName [IndNam] (GeoMaterialDict) Name with addition of leading spaces to help show rank within a hierarchical list. USGS NCGMP, 2020 Examples of values: "--------Colluvium and other widespread Mass-movement Sediment" or "------mudstone" IsConcealed [IsCon] (ContactsAndFaults, GeologicLines) Flag for contacts and faults covered by overlying map unit. USGS NCGMP, 2020 Y Yes USGS NCGMP, 2020 N No USGS NCGMP, 2020 Label (CartographicLines, ContactsAndFaults, DescriptionOfMapUnits, FossilPoints, GenericPoints, GeologicLines, MapUnitPolys, OrientationPoints, Overlaypolys) 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). USGS NCGMP, 2020 Examples of values: "Kd" or "^Pch" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, FossilPoints, GenericPoints, GeologicLines, OrientationPoints) Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. USGS NCGMP, 2020 Positive real number. Value of -9 indicates value is unknown. LocationSourceID [LocSrcID] (FossilPoints, GenericPoints, OrientationPoints) Source of location; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information MapUnit (DescriptionOfMapUnits, FossilPoints, GenericPoints, MapUnitPolys, OrientationPoints) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP, 2020 Jm Morrison Formation Snyder, 1980 Js Sundance Formation Snyder, 1980 Kb Benton Shale Snyder, 1980 Kd Dakota Sandstone Snyder, 1980 Kn Niobrara Formation Snyder, 1980 Kpsh Pierre Shale Snyder, 1980 Pfs Forelle Limestone and Satanka Formation, undifferentiated Snyder, 1980 Qal Alluvium Snyder, 1980 Qf Felsenmeer deposit Snyder, 1980 Qga Terrace gravel Snyder, 1980 Qgb Terrace gravel Snyder, 1980 Qgc Terrace gravel Snyder, 1980 Qgd Terrace gravel Snyder, 1980 Qge Terrace gravel Snyder, 1980 Ql Landslide deposit Snyder, 1980 Qr Rock glacier deposit Snyder, 1980 Qt Talus deposit Snyder, 1980 Qtb Till? Snyder, 1980 Qtc Till Snyder, 1980 Qtd Till Snyder, 1980 Qte Cirque and upland moraine Snyder, 1980 QTls Limestone Snyder, 1980 Ta Silicic Intrusive Porphyry Snyder, 1980 Tb Mafic dike Snyder, 1980 Tbp Browns Park Formation Snyder, 1980 Tc Coalmont Formation Snyder, 1980 TRc Chinle Formation Snyder, 1980 TRPc Chinle, Chugwater (Red Peak Member), and Satanka(?) Formations, undifferentiated Snyder, 1980 TRPch Chugwater Formation, Red Peak Member and Satanka(?) Formation Snyder, 1980 unmapped area unmapped area Snyder, 1980 water water Snyder, 1980 Xb Quartz monzonite Snyder, 1980 Xgl Quartz diorite Snyder, 1980 Xgn Felsic gneiss to amphibolite metavolcanics Snyder, 1980 Xm Calc-silicate marble Snyder, 1980 Xmg Medium-grained quartz monzonite and granite Snyder, 1980 Xmp Mafic and ultramafic intrusives Snyder, 1980 Xs Pelitic schist Snyder, 1980 Ya Aplite of the Mount Ethel Pluton Snyder, 1980 Yb Coarse-grained monzonite of the Mount Ethel Pluton Snyder, 1980 Yd Granodiorite and diorite of the Mount Ethel Pluton Snyder, 1980 Yg Fine-grained granite of the Mount Ethel Pluton Snyder, 1980 Yp Porphyry dike of the Mount Ethel Pluton Snyder, 1980 Yq Medium-grained granite and quartz monzonite of the Mount Ethel Pluton Snyder, 1980 YXp Pegmatite Snyder, 1980 MapUnitPolys_ID [MUPs_ID] (MapUnitPolys) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "MUP0001" MaterialAnalyzed [MatAna] (FossilPoints) Earth-material which was analyzed. USGS NCGMP, 2020 Example of values: "wood" or "shell" Name (DescriptionOfMapUnits) Name of map unit, as shown in boldface in traditional description of map units. Identifies unit within its hierarchical context. USGS NCGMP, 2020 Example of values: "Quartz diorite" NewExplanation [NewExp] (RepurposedSymbols) Explanation of usage of symbol in this map portrayal. USGS NCGMP, 2020 Example of values: "The surface (axial plane) of a small-scale fold, that connects the hinge lines of the strata in a fold." Notes (CartographicLines, ContactsAndFaults, DataSources, FossilPoints, GenericPoints, GeologicLines, MapUnitPolys, OrientationPoints, OverlayPolys) Additional information specific to a particular feature or table entry. USGS NCGMP, 2020 Free text. Example of values: "Inclination ranges between 20-35." OBJECTID [OID] [FID] (all) Object identification: an Esri default field that contains an integer value to uniquely identify a row in an attribute table. Esri sequential integer values, CSV files may be auto populated with -1 OldExplanation [OldExp] (RepurposedSymbols) Explanatory text from FGDC standard for meaning of symbol. USGS NCGMP, 2020 Example of values: "Inclined crinkled or deformed cumulate foliation - Showing approximate strike and dip." OrientationConfidenceDegrees [OriConDeg] (OrientationPoints) Estimated angular precision of combined azimuth AND inclination measurements, in degrees. USGS NCGMP, 2020 5 5 degrees USGS authors OrientationPoints_ID [OriPoi_ID] (OrientationPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "ORP0001" OrientationSourceID [OriSrcID] (OrientationPoints) Source of orientation data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Snyder, 1980 See DataSources_ID attribute information ParagraphStyle [ParaSty] (DescriptionOfMapUnits) Token that identifies formatting of paragraph(s) within traditional Description of Map Units that correspond to this table entry. USGS NCGMP, 2020 DMU-Heading2 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 NCGMP, 2020 DMU-Heading3 Heading style for third-order headings within Description of Map Units table. USGS NCGMP, 2020 DMU Unit 1 Paragraph style for formatted description of a first-rank 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 NCGMP, 2020 DMU Unit 2 Paragraph style for formatted description of a second-order map unit within Description of Map Units table. Such map units are subsidiary to (commonly subdivisions of) first-order map units. 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 NCGMP, 2020 PlotAtScale [PlotAtSca] (FossilPoints, GenericPoints, OrientationPoints) Scale at which an observation should be plotted. Value is scale of the map. USGS NCGMP, 2020 Positive real number. Using original map scale of 48000. RepurposedSymbols_ID [RepSym_ID] (RepurposedSymbols) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "RPS01" Shape (CartographicLines, ContactsAndFaults, FossilPoints, GenericPoints, GeologicLines, MapUnitPolys, OrientationPoints, OverlayPolys) An Esri default field that contains the geometry type (point, line, polygon). Esri Point Geometry type is a point. Esri Polygon Geometry type is a polygon. Esri Polyline Geometry type is a line. Esri Shape_Area (MapUnitPolys, OverlayPolys) An Esri default field that contains the area of a polygon. The value is automatically generated in units of the feature class. Esri 97.255644 127830331.911696 square meters 0.000001 Shape_Length [Shp_Len] (CartographicLines, ContactsAndFaults, GeologicLines, MapUnitPolys, OverlayPolys) An Esri default field that contains the length of a line or perimeter. The value is automatically generated in the units of the feature class. Esri 10.993251 702762.53769 meters 0.000001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP, 2020 Example of values: "Snyder, 1980" StationsID (FossilPoints, GenericPoints, OrientationPoints) Unique alpha-numeric value used to link to Stations point feature class (foreign key) (not used in this geodatabase). USGS NCGMP, 2020 All values NULL because no alternate sample identifiers were provided on the original map. Symbol (CartographicLines, ContactsAndFaults, DescriptionOfMapUnits, FossilPoints, GenericPoints, GeologicLines, MapUnitPolys, OrientationPoints, OverlayPolys) 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. USGS NCGMP, 2020 Numbers correspond to FGDC symbolization or a MapUnit. These values also correspond to the supplied Style file. Example of values: "01.01.01" Term (Glossary) Plain-language word for a concept. Values are unique within database as a whole. USGS NCGMP, 2020 Values correspond to attributes primarily used in the Type fields. Examples of values: "foliation" or "syncline, overturned" Type (CartographicLines, ContactsAndFaults, FossilPoints, GenericPoints, GeologicLines, OrientationPoints, OverlayPolys) 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, fault, or water boundary. USGS NCGMP, 2020 anticline A fold, generally convex upward, whose core contains the stratigraphically older rocks. Neuendorf and others, 2011 bedding The arrangement of sedimentary rocks in beds or layers of varying thickness and character; the general physical and structural character or pattern of the beds and their contacts within a rock mass, such as cross-bedding and graded bedding; a collective term denoting the existence of beds. Also, the structure so produced. Neuendorf and others, 2011 bedding, folded Bedding that is folded and a measurement was taken of the bedding in both limbs of the fold. Snyder, 1980 bedding, horizontal Bedding that is horizontal to the principal surface of deposition and thus has a dip of zero. Neuendorf and others, 2011 bedding, overturned Bedding inclined to the principal surface of deposition that has tilted beyond the perpendicular. Sequence of strata thus appears reversed. Neuendorf and others, 2011 bedding, vertical Bedding inclined to the principal surface of deposition that has tilted vertical (90 degrees). Neuendorf and others, 2011 borrow pit Earth material (sand, gravel, etc.) taken from one location to be used for fill at another location; e.g., embankment material obtained from a pit when sufficient excavated material is not available nearby to form the embankment. The borrow material usually has suitable or desirable physical properties for its intended purpose. Neuendorf and others, 2011 boulder streams Overlay polygon for areas with concentrations of large boulders formed by washing action of streams of any age on till or colluvium. Snyder, 1980 columns A line that parallels to the long axis of a column; parallel, prismatic columns, formed by cooling in intrusive rocks. Snyder, 1980 | Neuendorf and others, 2011 columns, horizontal A column that is measured to be horizontal. Snyder, 1980 columns, vertical A column that is measured to be vertical. Snyder, 1980 contact A plane or irregular surface between two types or ages of rock. Neuendorf and others, 2011 contact, inclined The angle a contact makes with the horizontal; measured perpendicular to the strike of the contact and in the vertical plane. Snyder, 1980 contact, internal Used where contacts are included within the same geologic map unit. Snyder, 1980 contact, vertical Contact that has tilted vertical (90 degrees). Snyder, 1980 cross section A line representing a plane from which vertical geologic sections are drawn at right angles to the longer axis of a geologic feature in the cross section diagrams of the map (DAS01). Neuendorf and others, 2011 epidote-chlorite alteration A line representing a zone of pervasive epidote-chlorite alteration in Precambrian rocks. Snyder, 1980 fault, high-angle A discrete surface or zone of discrete surfaces separating two rock masses across which one mass has slid past the other. The dip of the fault is usually greater than 45 degrees. Neuendorf and others, 2011 fault, high-angle, oblique-slip, left-lateral 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. The dip of the fault is usually greater than 45 degrees. Neuendorf and others, 2011 fault, inclined The maximum angle that a fault plane makes with the horizontal; measured perpendicular to the strike of the structure and in the vertical plane. Neuendorf and others, 2011 fault, normal 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. Neuendorf and others, 2011 fault, strike-slip, left-lateral A fault on which the movement is parallel to the fault's strike and which the side opposite the observer has been displaced to the left. Neuendorf and others, 2011 fault, strike-slip, right-lateral A fault on which the movement is parallel to the fault's strike and which the side opposite the observer has been displaced to the right. Neuendorf and others, 2011 fault, thrust A fault with a dip of 45 degrees or less over much of its extent, on which the hanging wall has moved upward relative to the footwall. Neuendorf and others, 2011 fault, vertical Fault that is measured to be vertical at the locality. Snyder, 1980 foliation A general term for a planar arrangement of textural or structural features in any type of rock, esp. the locally planar fabric in a rock defined by a fissility, a preferred orientation of crystal planes in mineral grains, a preferred orientation of inequant grain shapes, or from compositional banding. In igneous rocks, planar parallelism of flaky or tabular minerals and mineral aggregates, slabby xenoliths, or flattened vesicles as well as compositional layering. In metamorphic schist or other coarse-grained rocks, parallel alignment of platy mineral grains (mica) or inequant crystals of other minerals. Neuendorf and others, 2011 foliation, fault breccia, mylonite Foliation in mylonite; a fine-grained, foliated rock, commonly with poor fissility and possessing a distinct lineation. Or a stratified surface in fault breccia; angular rock fragments resulting from fracturing and frictional slip along a fault. Snyder, 1980 | Neuendorf and others, 2011 foliation, fault breccia, mylonite, vertical Foliation in mylonite or a stratified surface in fault breccia. For which, the surface is measured to be vertical. Snyder, 1980 foliation, folded Foliation that is folded and a measurement was taken of the foliation in both limbs of the fold. Snyder, 1980 foliation, folded, vertical Foliation that is folded and a measurement was taken of the foliation in both limbs of the fold. The foliation surface was measured to be vertical. Snyder, 1980 foliation, gently folded General strike and range of dip of gently folded schistosity or foliation. Can be present in schist or other coarse-grained, crystalline rock due to the parallel alignment of platy mineral grains (mica) or inequant crystals of other minerals. Snyder, 1980 | Neuendorf and others, 2011 foliation, gently folded, near vertical General strike and range of dip of gently folded schistosity or foliation that is near vertical (inclination is close to 90). Snyder, 1980 foliation, horizontal Foliation that has tilted horizontal. Neuendorf and others, 2011 foliation, vertical Foliation that has tilted vertical (90 degrees). Neuendorf and others, 2011 fossil locality The location of fossil collection or observation. Snyder, 1980 glacial striation One of a series of long, delicate, finely cut, commonly straight and parallel furrows or lines inscribed on a bedrock surface by the rasping and rubbing of rock fragments embedded at the base of a moving glacier, and usually oriented in the direction of ice movement; also formed on the rock fragments transported by the ice. Head of arrow at point of observation. Snyder, 1980 | Neuendorf and others, 2011 joint Strike and dip of zone of prominent joints; may be combined with foliation. A planar fracture, crack, or parting in an intrusive rock, without shear displacement. Snyder, 1980 | Neuendorf and others, 2011 joint, horizontal A zone of prominent joints that are measured to be horizontal; may be combined with foliation. Snyder, 1980 joint, vertical A zone of prominent joints that are measured to be vertical; may be combined with foliation. Snyder, 1980 lineation A general, nongeneric term for a locally linear structure or fabric in a rock, e.g. flow lines, scratches, striae, slickensides or slickenfibers on a single surface; linear arrangements of components in sediments; or axes of folds. Lineation in metamorphic rocks includes aligned rod-shaped and/or elongate minerals grains, crenulation fold axes, and the lines of intersection between bedding and cleavage or any two sets of oriented surfaces (O'Leary et al., 1976; El-Etr, 1976). Letter symbols indicate nature of lineation: Bi, elongate biotite; FA, minor fold axis; Hb, hornblende. If lineation is formed by more than one element, more than one letter symbol is shown. Snyder, 1980 | Neuendorf and others, 2011 lineation, horizontal A lineation that is measured to be horizontal. Letter symbols indicate nature of lineation: FA, minor fold axis. Snyder, 1980 lineation, mineral A linear fabric element defined by the preferred orientation of inequant mineral grains (e.g. prismatic grains of hornblende) or elongated grain aggregates. Letter symbols indicate nature of lineation: Bi, elongate biotite; F, unknown feldspar; F-AUG, lenticular feldspar grains or aggregates; Hb, hornblende; K, potassium feldspar; R, ridging or rodding or mullion structure; Si, sillimanite. If lineation is formed by more than one element, more than one letter symbol is shown. Snyder, 1980 | Neuendorf and others, 2011 lineation, mineral, horizontal A mineral lineation that is measured to be horizontal. Letter symbols indicate nature of lineation: Hb, hornblende; K, potassium feldspar; Si, sillimanite. Snyder, 1980 lineation, mineral, vertical A mineral lineation that is measured to be vertical. Letter symbols indicate nature of lineation: Hb, hornblende. Snyder, 1980 lineation, vertical A lineation that is measured to be vertical. Letter symbols indicate nature of lineation: FA, minor fold axis. Snyder, 1980 map boundary A line representing the boundary of the mapping area. Snyder, 1980 mine adit A horizontal passage from the surface into a mine. Letter symbols indicate type of ore at mine or prospect, if known: Cu, copper; F, fluorite; Pb, lead; Zn, zinc. Snyder, 1980 | Neuendorf and others, 2011 mine shaft A vertical or inclined excavation through which a mine is worked. Letter symbols indicate type of ore at mine or prospect, if known: Cu, copper; Pb, lead; Zn, zinc. Snyder, 1980 | Neuendorf and others, 2011 minor fold, axial plane The surface (axial plane) of a small-scale fold, that connects the hinge lines of the strata in a fold. Represented as a point feature. Neuendorf and others, 2011 minor fold, axial plane, fold axis, multiple The surface (axial plane) of a small-scale fold, that connects the hinge lines of the strata in a fold. The map sense of the fold is multiple. Represented as a point feature. Snyder, 1980 | Neuendorf and others, 2011 minor fold, axial plane, fold axis, multiple, vertical The surface (axial plane) of a small-scale fold, that connects the hinge lines of the strata in a fold. For which, the surface is measured to be vertical and the map sense of the fold is multiple. Represented as a point feature. Snyder, 1980 | Neuendorf and others, 2011 minor fold, axial plane, vertical The surface (axial plane) of a small-scale fold, that connects the hinge lines of the strata in a fold. For which, the surface is measured to be vertical. Represented as a point feature. Snyder, 1980 minor fold, fold axis, antiform A line (fold axis) of a small-scale fold which, when moved parallel to itself, traces out a folded surface. The map sense of the fold is an antiform; any convex-upward, concave downward fold. Represented as a point feature. Letter symbols indicate nature of lineation: FA, minor fold axis; Hb, hornblende. If lineation is formed by more than one element, more than one letter symbol is shown. Snyder, 1980 | Neuendorf and others, 2011 minor fold, fold axis, known map sense, asymmetric A line (fold axis) of a small-scale fold which, when moved parallel to itself, traces out a folded surface. The map sense of the fold is "Known map sense". Assumed to be asymmetric. Represented as a point feature. Letter symbols indicate nature of lineation: FA, minor fold axis. Snyder, 1980 | Neuendorf and others, 2011 minor fold, fold axis, known map sense, asymmetric, vertical A line (fold axis) of a small-scale fold which, when moved parallel to itself, traces out a folded surface. For which, the line is measured to be vertical and the map sense of the fold is "Known map sense". Assumed to be asymmetric. Represented as a point feature. Letter symbols indicate nature of lineation: FA, minor fold axis. Snyder, 1980 | Neuendorf and others, 2011 minor fold, fold axis, multiple A line (fold axis) of a small-scale fold which, when moved parallel to itself, traces out a folded surface. The map sense of the fold is multiple. Represented as a point feature. Letter symbols indicate nature of lineation: FA, minor fold axis. Snyder, 1980 | Neuendorf and others, 2011 minor fold, fold axis, synform A line (fold axis) of a small-scale fold which, when moved parallel to itself, traces out a folded surface. The map sense of the fold is a synform; any fold whose limbs close at the bottom. Represented as a point feature. Letter symbols indicate nature of lineation: FA, minor fold axis; Hb, hornblende. If lineation is formed by more than one element, more than one letter symbol is shown. Snyder, 1980 | Neuendorf and others, 2011 polished surface A surface that displays a polished texture, characterized by high luster and strong reflected light. The surface was produced by the movement of a small fault parallel(?) with an adjacent large fault. Snyder, 1980 | Neuendorf and others, 2011 prospect pit A general term for any pit made for the purpose of prospecting mineral-bearing ground. Letter symbols indicate type of ore at mine or prospect, if known: Cu, copper; F, fluorite; Fe, iron; U, uranium. Snyder, 1980 | Neuendorf and others, 2011 quarry Surficial mine, in which the valuable rock or building stone is exposed by removal of overburden then extracted. Letter symbols indicate type of ore at mine or prospect, if known: F, fluorite. Snyder, 1980 | Neuendorf and others, 2011 recessional moraine ridges A line representing the ridge line of an end or lateral moraine; built during a temporary but significant pause in the final retreat of a glacier or built during a slight or minor readvance of the ice front during a period of general recession. Neuendorf and others, 2011 relative movement The direction of relative horizontal movement within a fault zone. Observations of mylonite within Soda Creek-Fish Creek mylonite zone are confined to local outcrops along mapped faults, but rocks are also partly sheared locally between mapped faults; fine grain size of mylonites and mylonitic truncation of metamorphic structures shows that period of mylonitization is younger than period of regional dynamothermal metamorphism. Snyder, 1980 schistosity and foliation A line (usually broken) on a map, sketched or drawn by visual observation, depicting the overall attitude of schistosity and foliation of Precambrian rocks. Snyder, 1980 | Neuendorf and others, 2011 scratch boundary Used where contacts were omitted and not mapped. Snyder, 1980 syncline A fold of which the core contains the stratigraphically younger rocks; it is generally concave upward. Neuendorf and others, 2011 syncline, overturned A syncline that has been tilted beyond the perpendicular. Sequence of strata thus appears reversed. Neuendorf and others, 2011 tertiary porphyry boulder limit A line representing the boundary of a soil zone containing 1.5-6 m diameter Tertiary porphyry lag boulders (Ta) of rock type similar to that exposed on hill 8934 (located within the polygon with MapUnitPolys_ID of MUP1023). Snyder, 1980 water The outline of a body of water (lake) and/or stream. Snyder, 1980 well exposed The location of a contact or fault that has good exposure, as opposed to other localities, at the surface. Snyder, 1980 wilderness boundary A line representing the boundary of a wilderness area. Snyder, 1980 URL (DataSources) Uniform Resource Locator (URL) or Digital Object Identifier (DOI), identifies a document on the World Wide Web. USGS NCGMP, 2020 Example of values: "https://doi.org/10.3133/i1112" The entity and attribute information provide the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. The database conforms to the USGS Geologic Map Schema (GeMS) with the minor addition of the field “Description” to the ContactsAndFaults and GeologicLines layers. A full description of the GeMS database structure can be accessed at https://doi.org/10.3133/tm11B10. 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Reston VA 20192 United States 1-888-ASK-USGS (1-888-275-8747) ngmdb@usgs.gov 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data Set Use a file extraction software such as WinZip, 7zip, Peazip https://doi.org/10.5066/P93PTFDV None. No fees are applicable for obtaining the data set. 20250530 John D. Horton U.S. Geological Survey, ROCKY MOUNTAIN REGION Physical Scientist mailing address

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