John D. Horton 20211210 vector digital data Denver, Colorado U.S. Geological Survey Additional information about Originator: Horton, J.D., https://orcid.org/0000-0003-2969-9073; Suggested citation: Horton, J.D., 2021, GIS data for geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey data release, https://doi.org/10.5066/P9OUTZGV. https://doi.org/10.5066/P9OUTZGV Karl V. Evans Gregory N. Green Karen I. Lund Russell G. Tysdal Gary R. Winkler 2003 publication U.S. Geological Survey Geologic Investigations Series I-2765 Denver, Colorado U.S. Geological Survey Suggested citation: Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. https://doi.org/10.3133/i2765 This U.S. Geological Survey (USGS) data release provides an updated digital geospatial database for the geologic map of the Salmon National Forest and vicinity, east-central Idaho (Evans and Green, 2003). 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 Investigations Series Map I-2765. Minor errors, such as mistakes in line decoration or differences between the digital data and the map image, are corrected in this version. The database represents the geology for the 11,265 square kilometer, geologically complex Salmon National Forest in two plates, at a publication scale of 1:100,000. The map covers primarily Lemhi County, but also includes minor parts of Beaverhead, Custer, Idaho, Ravalli and Valley Counties. New geologic mapping was undertaken between 1990 and 2002 and synthesized with older published maps, providing significant stratigraphic and structural data, age data for intrusive rocks, and interpretations of geologic development. References: Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. 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 a Geologic Map Schema (GeMS)-compliant version for the geologic map of the Salmon National Forest and vicinity, east-central Idaho, that updates the geospatial data published as part of USGS Geologic Investigations Series Map I-2765 (Evans and Green, 2003). Conversion 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. The data reside in the National Geologic Map Database (NGMDB) distributed archive of standardized geoscience information for the nation. SalmonNF_I-2765.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 (SalmonNF_I-2765.gdb) contains the following elements: --GeologicMap: feature dataset (subdirectory) containing the following feature classes (GIS layers): ----ContactsAndFaults: line layer representing locations of contacts and faults. ----DataSourcePolys: polygon layer representing the spatial extent of data sources and (or) references used within the map boundary. ----GenericPoints: point layer representing the location of drill holes. ----GeologicLines: line layer representing the locations of dikes, fold axes, and other linear features. ----OrientationPoints: point layer representing structure measurements, such as bedding attitudes, foliation attitudes, and small folds. ----OverlayPolys: polygon layer that delineates areas of underlying or overlying material commonly shown as a patterned overprint. ----MapUnitPolys: polygon layer representing the distribution of geologic map units. --DataSources: table that lists sources and (or) references used to derive spatial features (points, lines, polygons) and attribute information. --DescriptionOfMapUnits: table of map unit descriptions derived from the collar of the geologic map or geologic map pamphlet. 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, available at https://doi.org/10.3133/tm11B10. --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. In this case, the generic fault type for normal faults where up/down designations (ball and bar) are not shown on the map. 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. 20211210 publication date Complete None planned -115.1995 -112.9496 45.7926 44.0651 USGS Thesaurus data services geospatial datasets geographic information systems geology geologic maps bedrock geologic units structural geology ISO 19115 Topic Category geoscientificInformation None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics and Geochemistry Science Center GGGSC National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:5faadd3bd34eb413d5df2011 Common geographic areas Idaho ID Geographic Names Information System (GNIS) Beaverhead County Custer County Idaho County Lemhi County Ravalli County Salmon Valley County Washington County None. Please see 'Distribution Info' for details. These data are intended for use at approximately 1:100,000-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. Karen Lund U.S. Geological Survey, ROCKY MOUNTAIN REGION Research Geologist mailing address

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-5600 303-236-3200 klund@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 10 Enterprise, Version 10 (Build 18363); 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. GIS layer and attribute information were cross walked 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. The original GIS database (Evans and Green, 2003) was converted from ArcInfo interchange files (E00) to an Esri file geodatabase. Minor errors, such as mistakes in line decoration or differences between the digital data and the map image, are corrected in this version. The data set is considered complete for the information presented and as described in the abstract. Horizontal accuracy of point, line, and polygon features is dependent on the accuracy of the source data. Computing technologies used for original data capture 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. Base maps and (or) materials used for original data capture (ArcInfo coverages) are no longer available. Registration discrepancies between the printed map and the digital data are not addressed in this version. Vertical accuracy testing does not apply to this dataset. Karl V. Evans Gregory N. Green Karen I. Lund Russell G. Tysdal Gary R. Winkler 2003 publication U.S. Geological Survey Geologic Investigations Series I-2765 Denver, Colorado U.S. Geological Survey Suggested citation: Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. https://doi.org/10.3133/i2765 100000 Digital and/or Hardcopy 2003 publication date Evans and Green, 2003 Source of all GIS for this data release and the original map publication. 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://pubs.er.usgs.gov/publication/tm11B10. https://pubs.er.usgs.gov/publication/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. Karl Evans (USGS) compiled the geology onto scale-stable base materials. Geologic Data Systems, Inc. (Denver, CO) scanned the geologic map and provided attributed ArcInfo interchange files (E00) to the USGS in decimal degree format. Gregory Green (USGS) imported the files, projected and further attributed, edited, and compared to the original film positives to check for digitizing and attributing errors. Corrections were made as needed. The files are stored in the projection - Albers Conic Equal Area, NAD27, Clarke 1866. 2002 The original data were converted from ArcInfo interchange files (E00) format into feature classes within an Esri file geodatabase. Attributes were standardized to conform to the Geologic Map Schema (USGS NCGMP, 2020). Definitions of these values are derived from the source publication (Evans and Green, 2003), GeMS (USGS NCGMP, 2020), and from the Glossary of Geology (Neuendorf and others, 2011). Data layers were re-projected to Albers Equal Area, North American Datum 1983, in units of meters. Base maps and (or) materials used for original data capture are no longer available, therefore a georeferenced version of the original map publication (https://ngmdb.usgs.gov/Prodesc/proddesc_54463.htm) from the National Geologic Map Database was used to compare attribute information and to correct minor discrepancies between the GIS data and the printed map. Minor errors, such as differences in line decoration, line type, or map units were corrected and documented in the Notes attribute field. Registration discrepancies between the printed map and the digital data are not addressed in this version. 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 were 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 are 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. Evans and Green, 2003 USGS NCGMP, 2020 Neuendorf and others, 2011 FGDC, 2006 2021 Vector Entity point 216 G-polygon 1357 Link 3651 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 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: "Eocene" or "Tertiary to Cretaceous" AreaFillPatternDescription [PatDes] (DescriptionOfMapUnits) Text description (for example, "random small red dashes") provided as a convenience for users who must recreate symbolization. USGS NCGMP, 2020 Examples of values: "red v's" or "blue v's" 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: "255,252,213" Azimuth (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 0 358 degrees (angular measure) 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" DataSourceID [DatSrcID] (ContactsAndFaults, DataSourcePolys, GenericPoints, GeologicLines, MapUnitPolys, OverlayPolys) Source of data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Evans and Green, 2003 Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. DataSourcePolys_ID [DSrcPol_ID] (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DSP1" DataSources_ID [DatSrc_ID] (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DAS01" Definition (GeoMaterialDict, Glossary) Plain-language definition. USGS NCGMP, 2020 Examples of values: "Silt- and sand-sized sediment, deposited by wind." or "A fold, generally convex upward, whose core contains the stratigraphically older rocks." DefinitionSourceID [DefSrcID] (Glossary) Source of definition; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Evans and Green, 2003 Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. DAS02 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. DAS03 Neuendorf and others, 2011 Neuendorf, K.K.E., Mehl Jr., J.P., and Jackson, J.A., 2011, Glossary of Geology (fifth edition): American Geological Institute, Alexandria, Virginia, 779 p. Description [Descr] (DescriptionOfMapUnits, ContactsAndFaults, 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 (e.g., lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints). USGS NCGMP, 2020 Example of values from the DescriptionOfMapUnits table: "Composite unit of unconsolidated gravel, sand, silt, and clay deposits of present streams, rivers, and washes; hillside colluvium; landslide material; and glacial moraines and outwash" Examples of values from the ContactsAndFaults feature class: "contact, certain" or "fault, thrust, concealed" 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) Source of map-unit description; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Evans and Green, 2003 Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. 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 02.01.01 Fault (generic) - Identity and existence certain, location accurate. FGDC, 2006 02.01.03 Fault (generic) - Identity and existence certain, location approximate. FGDC, 2006 02.01.07 Fault (generic) - Identity and existence certain, location concealed. FGDC, 2006 FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP, 2020 Example of values: "Sunnyside tuff of Thunder Mountain cauldron complex of Challis Volcanic Group" 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 values: "GNP1" 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: "GEL001" 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: "----Clastic sediment" or "--------Felsic-composition pyroclastic flows" 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: "01-01" or "03-01-04-04" 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. USGS NCGMP, 2020 3 88 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: "----Clastic sediment" or "----Fine-grained intrusive igneous rock" 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 (DescriptionOfMapUnits, ContactsAndFaults, 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: "Qu" or "_Zw" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, 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] (GenericPoints, OrientationPoints) Source of location; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Evans and Green, 2003 Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. MapUnit (DescriptionOfMapUnits, GenericPoints, MapUnitPolys, OrientationPoints) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP, 2020 CZw Wilbert Formation Evans and Green, 2003 Du Three Forks and Jefferson Formations, undivided Evans and Green, 2003 Kg Biotite-muscovite granite Evans and Green, 2003 Kgd Biotite granodiorite Evans and Green, 2003 Kgdf Foliated biotite granodiorite Evans and Green, 2003 Kpg Porphyritic granite and granodiorite Evans and Green, 2003 Kt Hornblende-biotite tonalite Evans and Green, 2003 Mg McGowan Creek Formation Evans and Green, 2003 Mm Middle Canyon Formation Evans and Green, 2003 Mr Railroad Canyon Formation Evans and Green, 2003 Ms Scott Peak Formation Evans and Green, 2003 Mss Surrett Canyon, South Creek, and Scott Peak Formations (Upper Mississippian) and Middle Canyon Formation (Upper and Lower Mississippian), undivided Evans and Green, 2003 Mu Surrett Canyon(?), South Creek(?), and Scott Peak Formations (Upper Mississippian) and Middle Canyon Formation (Upper and Lower Mississippian), undivided Evans and Green, 2003 OCi Mafic to predominantly felsic alkalic intrusions Evans and Green, 2003 Ok Kinnikinic Quartzite Evans and Green, 2003 Oks Kinnikinic Quartzite (Middle Ordovician) and Summerhouse Formation (Lower Ordovician), undivided Evans and Green, 2003 Os Summerhouse Formation Evans and Green, 2003 PMs Snaky Canyon (Lower Permian to Upper Mississippian) and Bluebird Mountain (Upper Mississippian) Formations, undivided Evans and Green, 2003 Pp Phosphoria Formation Evans and Green, 2003 PzZgm Gray marble Evans and Green, 2003 PzZv Metavolcanic and metasedimentary strata Evans and Green, 2003 QT Gravel, limestone, sandstone, and volcanogenic sediments Evans and Green, 2003 Qu Alluvial, colluvial, landslide, and glacial deposits, undivided Evans and Green, 2003 SOs Saturday Mountain Formation Evans and Green, 2003 SOu Laketown Dolomite (Silurian) and Saturday Mountain Formation (Lower Silurian to Middle Ordovician), undivided Evans and Green, 2003 Tc Challis Volcanic Group, undivided Evans and Green, 2003 Tcb Tuffs of Camas Creek–Black Mountain of Van Horn Peak cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcc Tuffs of Castle Rock segment of Van Horn Peak cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tce Tuff of Ellis Creek of Van Horn Peak cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcem Tuff of Eightmile Creek of Van Horn Peak cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcl Intermediate and mafic lavas of Van Horn Peak cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcll Lower latite lava of Thunder Mountain cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcp Perlitic rhyolite of Thunder Mountain cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tcs Sunnyside tuff of Thunder Mountain cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tct Lapilli tuff of Thunder Mountain cauldron complex of Challis Volcanic Group Evans and Green, 2003 Tg Granite Evans and Green, 2003 Tgd Granite, granodiorite, and quartz monzodiorite Evans and Green, 2003 Tgp Gray porphyry Evans and Green, 2003 Ti Mafic to felsic intrusions, undivided Evans and Green, 2003 Tir Intrusive rhyolite Evans and Green, 2003 TKi Intrusions, mostly intermediate and felsic Evans and Green, 2003 Toc Older colluvium of Panther Creek Evans and Green, 2003 TRd Dinwoody Formation Evans and Green, 2003 Ts Sedimentary rocks - basin fill Evans and Green, 2003 Ttu Tuff and tuffaceous conglomerate Evans and Green, 2003 Xg Basement gneiss Evans and Green, 2003 Ya Apple Creek Formation, undivided Evans and Green, 2003 Yab Banded siltite unit of Apple Creek Formation Evans and Green, 2003 Yac Coarse siltite unit of Apple Creek Formation Evans and Green, 2003 Yad Diamictite unit of Apple Creek Formation Evans and Green, 2003 Yaf Fine siltite unit of Apple Creek Formation Evans and Green, 2003 Yam Amphibolite and magnetite-hornblende gneiss Evans and Green, 2003 Yaq Argillaceous quartzite, unnamed Evans and Green, 2003 Yb Big Creek Formation Evans and Green, 2003 Ybgn Biotite gneiss Evans and Green, 2003 Ycsq Calc-silicate quartzite Evans and Green, 2003 Yfm Feldspathic metasandstone Evans and Green, 2003 Yg Gunsight Formation Evans and Green, 2003 Yh Hoodoo Quartzite Evans and Green, 2003 Yhe Helena and Empire Formations, undivided Evans and Green, 2003 Ylc Lawson Creek Formation Evans and Green, 2003 Ym Missoula Group, undivided Evans and Green, 2003 Ymg Megacrystic granite and augen gneiss Evans and Green, 2003 Yq Quartzite Evans and Green, 2003 Ys Swauger Formation Evans and Green, 2003 Ysg Spokane and Greyson Formations, undivided Evans and Green, 2003 Yu Lawson Creek Formation, Swauger Formation, and (or) Lemhi Group, undivided Evans and Green, 2003 Yy Yellowjacket Formation Evans and Green, 2003 Zm Mafic intrusive rock Evans and Green, 2003 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" 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 Examples of values: "Sunnyside tuff" or "Summerhouse Formation" NewExplanation [NewExp] (RepurposedSymbols) Explanation of usage of symbol in this map portrayal. USGS NCGMP, 2020 fault, normal (U/D not designated in source), certain These are certain normal faults but do not have up/down (ball and bar) designations. USGS Authors fault, normal (U/D not designated in source), approximate These are approximate normal faults but do not have up/down (ball and bar) designations. USGS Authors fault, normal (U/D not designated in source), concealed These are concealed normal faults but do not have up/down (ball and bar) designations. USGS Authors Notes (DataSources, ContactsAndFaults, DataSourcePolys, GenericPoints, GeologicLines, MapUnitPolys, OrientationPoints, OverlayPolys) Additional information specific to a particular feature or table entry. USGS NCGMP, 2020 Free text. Example of values: "Changed Type to match the printed map." 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 fault, generic, approximate Fault (generic) - Identity and existence certain, location approximate. FGDC, 2006 fault, generic, certain Fault (generic) - Identity and existence certain, location accurate. FGDC, 2006 fault, generic, concealed Fault (generic) - Identity and existence certain, location concealed. FGDC, 2006 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: "ORP001" OrientationSourceID [OriSrcID] (OrientationPoints) Source of orientation data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Evans and Green, 2003 Evans, K.V., Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geologic Investigations Series Map I-2765, scale 1:100,000, https://doi.org/10.3133/i2765. OverlayPolys_ID [OvePol_ID] (OverlayPolys) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "OVP01" 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 DMU1 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 DMU2 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 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 Heading3 Heading style for third-order headings within Description of Map Units table. USGS NCGMP, 2020 Heading4 Heading style for fourth-order headings within Description of Map Units table. USGS NCGMP, 2020 PlotAtScale [PlotAtSca] (GenericPoints, OrientationPoints) Scale at which an observation are plotted. Value is scale of the map. USGS NCGMP, 2020 Positive real number. Using original map scale of 100,000. 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: "RPS1" Shape (ContactsAndFaults, DataSourcePolys, 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 (DataSourcePolys, MapUnitPolys, OverlayPolys) An Esri default field that contains the area of a polygon. The value is automatically generated in the units of the feature class. Esri 10652.500929 11264741143.248188 square meters .000001 Shape_Length [Shp_Len] (ContactsAndFaults, DataSourcePolys, 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 52.449205 1585687.158164 meters 0.000001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP, 2020 Example of values: "Evans and Green, 2003" StationsID (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 are NULL. Symbol (DescriptionOfMapUnits, ContactsAndFaults, 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. Examples of values: "01.01.01" or "CZw" 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: "anticline" or "fault, thrust" Type (ContactsAndFaults, 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, or thrust fault, or water boundary. USGS NCGMP, 2020 anticline A fold, generally convex upward, whose core contains the stratigraphically older rocks. Neuendorf and others, 2011 anticline, overturned A fold, generally convex upward, whose core contains the stratigraphically older rocks that has tilted beyond the perpendicular. 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, 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 breccia zone Strike and dip of silicified breccia-zone and cataclasite surface east of Baker and Lemhi, and west of Tendoy, Idaho. Evans and Green, 2003 caldera boundary A large, basin-shaped volcanic depression, more or less circular or cirquelike in form, the diameter of which is many times greater than that of the included vent or vents, no matter what the steepness of the walls or form or the floor (Williams, 1941). It is formed by collapse during an eruption. Neuendorf and others, 2011 contact A plane or irregular surface between two types or ages of rock. Neuendorf and others, 2011 contact, scratch boundary Used where contacts were omitted and not mapped; along lats 44 degrees 30 minutes N and 45 degrees N. Evans and Green, 2003 dike A tabular igneous intrusion that cuts across the bedding or foliation of the country rock. Dikes of unknown age or chemistry. Neuendorf and others, 2011 dike, mafic A tabular igneous intrusion that cuts across the bedding or foliation of the country rock composed primarily of mafic intrusive rock (Zm - Neoproterozoic?). Neuendorf and others, 2011 and Evans and Green, 2003 drill hole Location of oil and gas wells. Evans and Green, 2003 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. Bar and ball on downthrown side. Neuendorf and others, 2011 fault, normal, low-angle A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is usually 45 degrees or less. Box on upper plate. Neuendorf and others, 2011 fault, normal (U/D not designated in source) 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. Up/down not designated in source, so no bar/ball symbolized. 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, 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, thrust, backslid A thrust fault with later normal movement. Ball/bar point in direction of backsliding. Evans and Green, 2003 fault, thrust, younger-on-older Thrust fault with younger-on-older relationship and multi-stage development. Younger-on-older relationship may be caused by multiple phases of compressional deformation and (or) by decoupling in lower plate during thrust juxtaposition. Superposed brittle deformation by low-angle normal movement. Evans and Green, 2003 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 rocks, planar parallelism of flaky minerals and compositional layering. Neuendorf and others, 2011 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). Neuendorf and others, 2011 map boundary A line representing the boundary of the mapping area. Evans and Green, 2003 metamorphic overprint Overlay polygon for areas in which stratigraphic unit occurs at a higher-than-typical metamorphic grade. Evans and Green, 2003 range-front dip-slope fault breccia Formed along low-angle normal faults during Tertiary regional extension (Tucker, 1983; Janecke and others, 1999). Locally preserved as an erosional remnant forming dip slopes on several ridge spurs on west side of northern Beaverhead Mountains, on top of Ramsay Mountain, and near McDevitt Creek in Lemhi Range. Along Kenney Creek a highly polished, reddish, hematitic, silicified surface of ultracataclasite dips 8 degrees NW. and truncates east-dipping hanging wall of Eocene to Miocene(?) sedimentary strata that intersect the surface at an angle of 60 degrees. Below surface, brecciation is intense but gradually decreases to unbrecciated Proterozoic strata through a 50-m-thick transition zone. The same fault(s) that formed the cataclasite in Beaverhead Mountains has probably been intersected at depth in exploration drill holes at the Humbug gold prospect along Ditch Creek northwest of outpost of North Fork. Evans and Green, 2003 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 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/i2765" 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. U.S. Geological Survey - National Geologic Map Database (NGMDB) mailing address

12201 Sunrise Valley Dr., Mail Stop 908

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/P9OUTZGV None. No fees are applicable for obtaining the data set. 20211210 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 303-236-1425 jhorton@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998