Edward M. Larkin John D. Horton Carma A. San Juan 20210429 1.0 vector digital data Denver, Colorado U.S. Geological Survey Additional information about Originator: Larkin, E., https://orcid.org/0000-0002-8845-6867; Horton, J.D., https://orcid.org/0000-0003-2969-9073; San Juan, C. A., https://orcid.org/0000-0002-9151-1919 Suggested citation: Larkin, E.M., Horton, J.D., San Juan, C. A., 2021, GIS data for geologic map of the Challis 1 x 2 degrees quadrangle, Idaho: U.S. Geological Survey data release, https://doi.org/10.5066/P9ITT4YF. https://doi.org/10.5066/P9ITT4YF Fred S. Fisher Dave H. McIntyre Kate M. Johnson 1992 publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1819 Denver, Colorado U.S. Geological Survey Suggested citation: Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. https://doi.org/10.3133/i1819 This U.S. Geological Survey (USGS) data release provides an updated digital geospatial database for the geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho (Fisher and others, 2000). 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-1819 (Fisher and others, 1992). 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 4.4 million acre, geologically complex Challis 1 x 2 degrees quadrangle, at a publication scale of 1:250,000. The map covers primarily Boise, Custer, Lemhi and Valley Counties, but also includes minor parts of Elmore County. These GIS data supersede those in the interpretive report (Fisher and others, 2000). References: Fisher, F.S., McIntyre, D.H., Johnson, K.M., and Green, G.N., 2000, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: a digital database: U.S. Geological Survey Miscellaneous Investigations Series Map I-1819, scale 1:250,000, https://pubs.usgs.gov/imap/i-1819/. Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-1819, scale 1:250,000, https://doi.org/10.3133/i1819. 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 Challis 1 degree x 2 degrees quadrangle, Idaho, that updates the geospatial data published as part of U.S. Geological Survey Miscellaneous Investigations Series Map I-1819 (Fisher and others, 2000). 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. Challis_1x2degrees.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 (Challis_1x2degrees.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 the Sunnyside mine. ----GeochronPoints: point layer representing sample locations of age dating. ----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. ----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. 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. 20210429 publication date Complete None planned -116.2898 -113.7430 45.2760 43.7216 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 Cooperative Geologic Mapping Program NCGMP National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:5f4e689b82ce4c3d1233c92d Common Geographic Areas Idaho ID Geographic Names Information System (GNIS) Challis Boise County Custer County Elmore County Lemhi County Valley County None. Please see 'Distribution Info' for details. These data are intended for use at approximately 1:250,000-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

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 FEDMAP component of the National Cooperative Geologic Mapping Program. Microsoft Windows 10 Enterprise, Version 10 (Build 18363); Esri ArcGIS Pro 3.4.3 Frederick S. Fisher Kathleen M. Johnson 1995 publication U.S. Geological Survey Professional Paper PP1525 Denver, Colorado U.S. Geological Survey Suggested citation: Fisher, F.S. and Johnson, K.M., 1995, Geology and mineral resource assessment of the Challis 1 degree by 2 degrees quadrangle, Idaho: U.S. Geological Survey, Professional Paper 1525. https://doi.org/10.3133/pp1525 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 (Fisher and others, 2000) 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 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. Fred S. Fisher Dave H. McIntyre Kate M. Johnson Gregory N. Green 2000 1.0 vector digital data U.S. Geological Survey Miscellaneous Investigations Series Map I-1819 Denver, Colorado U.S. Geological Survey Digital spatial data for Fisher and others (1992) prepared by Green, G., https://pubs.usgs.gov/imap/i-1819/. https://pubs.usgs.gov/imap/i-1819/ 250000 Digital and/or Hardcopy 2000 publication date Fisher and others (2000) Source of all GIS for this data release. Fred S. Fisher Dave H. McIntyre Kate M. Johnson 1992 1.0 publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1819 Denver, Colorado U.S. Geological Survey Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. https://doi.org/10.3133/i1819 250000 Digital and/or Hardcopy 1992 publication date Fisher and others (1992) Original published geologic map. 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. Fisher and others (1992) compiled the geology onto stable-base material and published a paper map at 1:250,000 scale. Clear film positives of the geologic map were electronically scanned to raster images; converted to vector, polygon, and point geographic information system (GIS) layers; and attributed by the contractor Techni Graphics Systems, Inc. of Fort Collins, Colorado in 1999. Greg Green (USGS) edited and published the data as Esri ArcInfo interchange files (E00) in 2000: https://pubs.usgs.gov/imap/i-1819/. The files are stored in the projection - UTM, meters, zone 11, NAD27, Clarke 1866. Fisher and others (1992) 2000 The original data (Fisher and others, 2000) 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 (GeMS) standard for geologic map publications (USGS NCGMP, 2020). Definitions of these values are derived from the source publication (Fisher and others, 1992), GeMS (USGS NCGMP, 2020), and from the Glossary of Geology (Neuendorf and others, 2011). GeMS geodatabase feature classes and tables were populated with additional information as required. 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_9938.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 was 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 in 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. The 'Sources of Data' index map shown on the printed map was digitized and included in the DataSourcePolys polygon layer and DataSources table as a courtesy. These are the sources used to produce the original printed geologic map; they are not the sources used to produce the original GIS data (Fisher and others, 2000). Fisher and others (2000) USGS NCGMP (2020) Fisher and others (1992) Neuendorf and others (2011) FGDC (2006) 20201031 Vector Entity point 194 G-polygon 2625 String 7859 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: "Upper Mississippian" or "Lower Ordovician or older" AgeMinusError [AgeMinErr] (GeochronPoints) Negative (younger) age error, measured in AgeUnits. USGS NCGMP (2020) NULL No value for standard error provided. USGS Authors 0.1 3.3 Ma (Mega-annum, one million years) 0.1 AgePlusError [AgePluErr] (GeochronPoints) Positive (older) age error, measured in AgeUnits. USGS NCGMP (2020) NULL No value for standard error provided. USGS Authors 0.1 3.3 Ma (Mega-annum, one million years) 0.1 AgeUnits (GeochronPoints) Units for NumericAge, AgePlusError, AgeMinusError. USGS NCGMP (2020) Ma Mega-annum, one million (10^6) years. Informal SI notation, where annum is age in years before present, with ''present'' fixed as 1950. This has largely replaced the various abbreviations for ''millions of years before present'' in geological literature. It is not equivalent to the elapsed time interval or duration in ''millions of years'' (myr). Neuendorf and others (2011) AlternateSampleID [AltSamID] (GeochronPoints) An alternate sample number. USGS NCGMP (2020) All values are NULL. No values entered. AnalysisSourceID [AnaSrcID] (GeochronPoints) Source of analysis; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) DAS20 Armstrong (1975) Armstrong, R.L., 1975, The geochronometry of Idaho: Isochron/West, no. 14, p. 1-50. DAS21 Leonard and Marvin (1982) Leonard, B.F., and Marvin, R.F., 1982, Temporal evolution of the Thunder Mountain caldera and related features, central Idaho, in Bonnichsen, Bill, and Breckenridge, R.M., eds., Cenozoic geology of Idaho: Idaho Bureau of Mines and Geology Bulletin 26, p. 23-41. DAS22 Criss and others (1982) Criss, R.E., Lanphere, M.A., and Taylor, H.P., Jr., 1982, Effects of regional uplift, deformation, and meteoric-hydrothermal metamorphism on K-Ar ages of biotites in the southern half of the Idaho batholith: Journal of Geophysical Research, v. 87, no. B8, p. 7029-7046. DAS23 Marvin and Dobson (1979) Marvin, R.F., and Dobson, S.W., 1979, Radiometric Ages Compilation B, U.S. Geological Survey: Isochron/West, no. 26, p. 3-32. DAS24 McIntyre and others (1976) McIntyre, D.H., Hobbs, S.W., Marvin, R.F., and Mehnert, H.H., 1976, Late Cretaceous and Eocene ages for hydrothermal alteration and mineralization, Bayhorse district and vicinity, Custer County, Idaho: Isochron/West, no. 16, p. 11-12. DAS25 Marvin and others (1973) Marvin, R.F., Tschanz, C.M., and Mehnert, H.H., 1973, Late Cretaceous age for molybdenite mineralization in Custer County, Idaho: Isochron/West, no. 7, p. 1. DAS38 Snee (written communication,1984) L.W. Snee, written commun., 1984 DAS39 Marvin (written communication, 1974) R.F. Marvin, written commun., 1974 DAS40 Marvin (written communication, 1980) R.F. Marvin, written commun., 1980 DAS41 Marvin (written communication, 1981) R.F. Marvin, written commun., 1981 DAS42 Marvin (written communication, 1982) R.F. Marvin, written commun., 1982 DAS43 Marvin (written communication, 1983) R.F. Marvin, written commun., 1983 DAS44 Marvin (written communication, 1984) R. F. Marvin, written commun., 1984 DAS45 Marvin (written communication, 1985) R.F. Marvin, written commun., 1985 DAS46 Fleck (written communication, 1984) R.J. Fleck, written commun., 1984 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: "small blue dots" or "pink '+' signs" 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: "235,128,204" 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) 0 359 degrees (angular measure) 1 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 Fisher and others (2000) Digital spatial data for Fisher and others (1992) prepared by Green, G., https://pubs.usgs.gov/imap/i-1819/. DAS02 Fisher and others (1992) Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. 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. DAS04 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. DAS05 Hobbs and others (1975) Hobbs, S.W., Hays, W.H., and Mcintyre, D.H., 1975, Geologic map of the Clayton quadrangle, Custer County, Idaho: U.S. Geological Survey Open-File Report 75-76, scale 1:62,500. DAS06 Hays and others (1978) Hays, W.H., Mcintyre, D.H., and Hobbs, S.W., 1978, Geologic map of the Lone Pine Peak quadrangle, Custer County, Idaho: U.S. Geological Survey Open-File Report 78-1060, scale 1:62,500. DAS07 McIntyre (unpublished mapping 1979-82); Mayfield (1975) pre-Tertiary rocks; Hobbs and Hall (unpublished mapping 1979-82) Volcanic rocks: D.H. McIntyre, unpub. mapping, 1979-82; S.W. Hobbs and W.E. Hall, unpub. mapping, 1979-82; Mayfield, C.F., 1975, Geology of the Thompson Creek area, Custer County, Idaho: Moscow, University of Idaho, M.S. thesis, 101 p. DAS08 Fisher and others (1983) Fisher, F.S., May, G.D., Mcintyre, D.H., and Johnson, F.L., 1983, Mineral resource potential, geologic and geochemical maps of part of the White Cloud-Boulder Roadless Area, Custer County, Idaho: U.S. Geological Survey Miscellaneous Field Studies Map MF-1580, scale 1:62,500. DAS09 Hardyman (unpublished mapping 1979-82); Ross (1934) R.F. Hardyman, unpub. mapping, 1979-82; Ross, C.P., 1934, Geology and ore deposits of the Casto quadrangle, Idaho: U.S. Geological Survey Bulletin 854, 135 p. DAS10 Hall, assisted by Batchelder, Winsor, and Howe (unpublished mapping 1979-82); Tschanz and others (1974) W.E. Hall, assisted by J.N. Batchelder, C. Winsor, and S.S. Howe, unpub. mapping, 1979-82; Tschanz, C.M., Kiilsgaard, T.H., Seeland, D.A., Mabey, D.R., Frischknecht, F.C., Van Noy, R.M., Ridenour, James, Zilka, N.T., Federspiel, F.E., Evans, R.K., Tuchek, E.T., and McMahan, A.B., 1974, Mineral resources of the eastern part of the Sawtooth National Recreation Area, Custer and Blaine Counties, Idaho: U.S. Geological Survey Open-File Report 74-1100, 2 volumes, 667 p. DAS11 Ekren and May (unpublished mapping 1982), Leonard and Marvin (1982); Brophy (unpublished mapping 1979); Ross (1934); Cater and others (1973) E.B. Ekren and G.D. May, unpub. mapping, 1982; J.G. Brophy, unpub. mapping, 1979; Leonard, B.F., and Marvin, R.F., 1982, Temporal evolution of the Thunder Mountain caldera and related features, central Idaho, in Bonnichsen, Bill, and Breckenridge, R.M., eds., Cenozoic geology of Idaho: Idaho Bureau of Mines and Geology Bulletin 26, p. 23-41; Ross, C.P., 1934, Geology and ore deposits of the Casto quadrangle, Idaho: U.S. Geological Survey Bulletin 854, 135 p.; Cater, F.W., Pinckney, D.M., Hamilton, W.B., Parker, R.L., Weldin, R.D., Close, T.J., and Zilka, N.T., 1973, Mineral resources of the Idaho Primitive Area and vicinity, Idaho: U.S. Geological Survey Bulletin 1304, 431 p. DAS12 Kiilsgaard and Lewis, assisted by Hughes, Erdman, and Nelson (unpublished mapping 1979-82); Schmidt (1964) T.H. Kiilsgaard and R.S. Lewis, assisted by C.A. Hughes, T.W. Erdman, and D.E. Nelson, unpub. mapping, 1979-82; Schmidt, D.L., 1964, Reconnaissance petrographic cross section of the Idaho batholith in Adams and Valley Counties, Idaho: U.S. Geological Survey Bulletin 1181-G, 50 p. DAS13 Luthy (1981) Luthy, S.T., 1981, The petrology of Cretaceous and Tertiary intrusive rocks of the Red Mountain-Bull Trout Point area, Boise, Custer, and Valley Counties, Idaho: Missoula, University of Montana, M.A. thesis, 112 p. DAS14 Kiilsgaard (1983) Kiilsgaard, T.H., 1983, Geologic map of the Ten Mile West Roadless Area, Boise and Elmore Counties, Idaho: U.S. Geological Survey Miscellaneous Field Studies Map MF-1500-A, scale 1:62,500. DAS15 Kiilsgaard and others (1970) Kiilsgaard, T.H., Freeman, V.L, and Coffman, J.S., 1970, Mineral resources of the Sawtooth Primitive Area: U.S. Geological Survey Bulletin 1319-D, p. D1-D174. DAS16 Tschanz and others (1974) Tschanz, C.M., Kiilsgaard, T.H., Seeland, D.A., Mabey, D.R., Frischknecht, F.C., Van Noy, R.M., Ridenour, James, Zilka, N.T., Federspiel, F.E., Evans, R.K., Tuchek, E.T., and McMahan, A.B., 1974, Mineral resources of the eastern part of the Sawtooth National Recreation Area, Custer and Blaine Counties, Idaho: U.S. Geological Survey Open-File Report 74-1100, 2 volumes, 667 p. DAS17 Ekren (unpublished mapping 1979-82); Ross (1934); Cater and others (1973); Carter (1981); Peale (1982); Lennon (unpublished mapping 1981); Forsgren (unpublished mapping, 1982); Rahn (1979); Wagstaff (1979) E.B. Ekren, unpub. mapping, 1979-82; Ross, C.P., 1934, Geology and ore deposits of the Casto quadrangle, Idaho: U.S. Geological Survey Bulletin 854, 135 p.; Cater, F.W., Pinckney, D.M., Hamilton, W.B., Parker, R.L., Weldin, R.D., Close, T.J., and Zilka, N.T., 1973, Mineral resources of the Idaho Primitive Area and vicinity, Idaho: U.S. Geological Survey Bulletin 1304, 431 p.; Carter, C.H., 1981, Geology of part of the Yellowjacket mining district, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 131 p.; Peale, R.N., 1982, Geology of the area southeast of Yellowjacket, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 129 p.; Forsgren, F.M., unpub. mapping, 1982; Rahn, J.E., 1979, Geology of the Meyers Cove area, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 101 p.; Wagstaff, D.A., 1979, The geology of the southwest quarter of the Meyers Cove quadrangle, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 101 p. DAS18 Foster (1982) Foster, Fess, 1982, Geologic map of Mt. Jordan and vicinity, Custer County, Idaho: U.S. Geological Survey Miscellaneous Field Studies Map MF-1434, scale 1:24,000. DAS19 McIntyre (unpublished mapping 1982); Siems and others (1979); Leavitt (1980); Choate (1962) D.H. McIntyre, unpub. mapping, 1982; Siems, P.L., Albers, D.F., Malloy, R.W., Mitchell, V.E., and Perley, P.C., 1979, Uranium potential and geology of the Challis Volcanics of the Basin Creek-Yankee Fork area, Custer County, Idaho: U.S. Department of Energy Report GJBX-33(79), 200 p.; Leavitt, J.D., 1980, The geology of the Challis volcanic rocks near Basin Creek, Custer County, Idaho: Eugene, University of Oregon, M.S. thesis, 135 p.; Choate, Raoul, 1962, Geology and ore deposits of the Stanley area: Idaho Bureau of Mines and Geology Pamphlet 126, 121 p. DAS20 Armstrong (1975) Armstrong, R.L., 1975, The geochronometry of Idaho: Isochron/West, no. 14, p. 1-50. DAS21 Leonard and Marvin (1982) Leonard, B.F., and Marvin, R.F., 1982, Temporal evolution of the Thunder Mountain caldera and related features, central Idaho, in Bonnichsen, Bill, and Breckenridge, R.M., eds., Cenozoic geology of Idaho: Idaho Bureau of Mines and Geology Bulletin 26, p. 23-41. DAS22 Criss and others (1982) Criss, R.E., Lanphere, M.A., and Taylor, H.P., Jr., 1982, Effects of regional uplift, deformation, and meteoric-hydrothermal metamorphism on K-Ar ages of biotites in the southern half of the Idaho batholith: Journal of Geophysical Research, v. 87, no. B8, p. 7029-7046. DAS23 Marvin and Dobson (1979) Marvin, R.F., and Dobson, S.W., 1979, Radiometric Ages Compilation B, U.S. Geological Survey: Isochron/West, no. 26, p. 3-32. DAS24 McIntyre and others (1976) McIntyre, D.H., Hobbs, S.W., Marvin, R.F., and Mehnert, H.H., 1976, Late Cretaceous and Eocene ages for hydrothermal alteration and mineralization, Bayhorse district and vicinity, Custer County, Idaho: Isochron/West, no. 16, p. 11-12. DAS25 Marvin and others (1973) Marvin, R.F., Tschanz, C.M., and Mehnert, H.H., 1973, Late Cretaceous age for molybdenite mineralization in Custer County, Idaho: Isochron/West, no. 7, p. 1. DAS26 Kiilsgaard and Lewis (unpublished mapping 1981-83); Weis (unpublished mapping 1979-80); Anderson (1947) T.H. Kiilsgaard and R.S. Lewis, unpub. mapping, 1981-83; P.L. Weis, unpub. mapping, 1979-80; Anderson, A.L. 1947, Geology and ore deposits of the Boise Basin, Idaho: U.S. Geological Survey Bulletin 944-C, 319 p. Carter, C.H., 1981, Geology of part of the Yellowjacket mining district, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 131 p. DAS27 McIntyre (1982); McIntyre and others (1984); McIntyre (unpublished mapping 1980-82); Motzer (1978); Hobbs (unpublished mapping 1979-80); Ross (1937) D.H. McIntyre, unpub. mapping, 1980-82; pre-Tertiary by S.W. Hobbs, unpub. mapping, 1979-80; McIntyre, D.H., 1982, Geologic map of the Jerry Peak Wilderness Study Area, Custer County, Idaho: U.S. Geological Survey Miscellaneous Field Studies Map MF-1466-A, scale 1:50,000.; McIntyre, D.H., Hobbs, S.W., Callahan, J.F., and May, G.D., 1984, Geologic and geochemical maps of the Jerry Peak West and Little Boulder Creek Wilderness Study Areas, Custer County, Idaho: U.S. Geological Survey Miscellaneous Field Studies Map MF-1466-E, scale 1:50,000.; Motzer, W.E., 1978, Volcanic stratigraphy of an area southeast of the White Cloud Peaks, Sawtooth National Recreation Area, Custer County, Idaho: Moscow, University of Idaho, M.S. thesis, 115 p.; Ross, C.P., 1937, Geology and ore deposits of the Bayhorse region, Custer County, Idaho: U.S. Geological Survey Bulletin 877, 161 p. DAS28 McIntyre and Hobbs (1978) Mcintyre, D.H., and Hobbs, S.W., 1978, Geologic map of the Challis quadrangle, Custer County, Idaho: U.S. Geological Survey Open-File Report 78-1059, scale 1:62,500. DAS29 Bennett and others (unpublished mapping 1979-82) E.H. Bennett, assisted by W.B. Strowd, R.S. Lewis, M.J. Barber, E.A. Kaufman, D.J. Shiveler, Theodore Cammarata, P.C. Rogers, T.M. Scanlan, and D.A. Cockrum, unpub. mapping, 1979-82. DAS30 Hardyman and Ekren (unpublished mapping 1979-81) R.F. Hardyman and E.B. Ekren, unpub. mapping, 1979-81 DAS31 Knowles (unpublished mapping 1980) C.R. Knowles, unpub. mapping, 1980 DAS32 Kiilsgaard and Lewis (unpublished mapping 1979-83) T.H. Kiilsgaard, assisted by R.S. Lewis, unpub. mapping, 1979-83 DAS33 Lewis (unpublished mapping 1981-82) R.S. Lewis, unpub. mapping, 1981-82 DAS34 Leonard (unpublished mapping 1957-1982) B.F. Leonard, unpub. mapping, 1957-1982 DAS35 Skipp (unpublished mapping 1982) B.A. Skipp, unpub. mapping, 1982 DAS36 McIntyre (unpublished mapping 1974-82) D.H. McIntyre, unpub. mapping, 1974-82 DAS37 Ekren and Modreski (unpublished mapping 1979-81) E.B. Ekren and P.J. Modreski, unpub. mapping, 1979-81 DAS38 Snee (written communication,1984) L.W. Snee, written commun., 1984 DAS39 Marvin (written communication, 1974) R.F. Marvin, written commun., 1974 DAS40 Marvin (written communication, 1980) R.F. Marvin, written commun., 1980 DAS41 Marvin (written communication, 1981) R.F. Marvin, written commun., 1981 DAS42 Marvin (written communication, 1982) R.F. Marvin, written commun., 1982 DAS43 Marvin (written communication, 1983) R.F. Marvin, written commun., 1983 DAS44 Marvin (written communication, 1984) R.F. Marvin, written commun., 1984 DAS45 Marvin (written communication, 1985) R.F. Marvin, written commun., 1985 DAS46 Fleck (written communication, 1984) R.J. Fleck, written commun., 1984 DAS47 Anderson (1947) Anderson, A.L., 1947, Geology and ore deposits of Boise Basin, Idaho: U.S. Geological Survey Bulletin 944-C, 319 p. DAS48 Anderson (1949) Anderson, A.L., 1949, Silver-gold deposits of the Yankee Fork district, Custer County, Idaho: Idaho Bureau of Mines and Geology Pamphlet 83, 37 p. DAS49 Carter (1981) Carter, C.H., 1981, Geology of part of the Yellowjacket mining district, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 131 p. DAS50 Cater and others (1973) Cater, F.W., Pinckney, D.M., Hamilton, W.B., Parker, R.L., Weldin, R.D., Close, T.J., and Zilka, N.T., 1973, Mineral resources of the Idaho Primitive Area and vicinity, Idaho: U.S. Geological Survey Bulletin 1304, 431 p. DAS51 Dover and others (1980) Dover, J.H., Berry, W.B.N., and Ross, R.J., Jr., 1980, Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho-stratigraphic and structural revisions and new data on graptolite faunas: U.S. Geological Survey Professional Paper 1090, 54 p. DAS52 Ekren (1981) Ekren, E.B., 1981, Van Hom Peak-a welded tuff vent in central Idaho: Montana Geological Society Field Conference and Symposium Guidebook, southwest Montana, p. 311-315. DAS53 Ekren (1988) Ekren, E.B., 1988, Stratigraphic and structural relations of the Hoodoo Quartzite and Yellowjacket Formation of Middle Proterozoic age from Hoodoo Creek eastward to Mount Taylor, central Idaho: U.S. Geological Survey Bulletin 1570, 17 p. DAS54 Hall and others (1974) Hall, W.E., Batchelder, J.N., and Douglass, R.C., 1974, Stratigraphic section of the Wood River Formation, Blaine County, Idaho: U.S. Geological Survey Journal of Research, v. 2, p. 89-95. DAS55 Hardyman (1981) Hardyman, R.F., 1981, Twin Peaks caldera of central Idaho: Montana Geological Society Field Conference and Symposium Guidebook, southwest Montana, p. 317-322. DAS56 Hays and others (1980) Hays, W. H., Harris, A. G., Dutro, J. T., Jr., and Ross, R. J., Jr., 1980, Stratigraphic sections of middle Paleozoic rocks in the vicinity of Spar Canyon, Custer County, Idaho: U.S. Geological Survey Open-File Report 80-1097, 82 p. DAS57 Hobbs (1980) Hobbs, S.W., 1980, The Lawson Creek Formation of Middle Proterozoic age in east-central Idaho: U.S. Geological Survey Bulletin 1482-E, p. 1-12. DAS58 Hobbs and others (1968) Hobbs, S.W., Hays, W.H., and Ross, R.J., Jr., 1968, The Kinnikinic quartzite of central Idaho-redefinition and subdivision: U.S. Geological Survey Bulletin 1254-J, p. Jl-J22. DAS59 Johannsen (1948) Johannsen, Albert, 1948, A descriptive petrography of the igneous rocks: Chicago, Ill., University of Chicago Press, 318 p. DAS60 Landreth (1964) Landreth, J.O., 1964, Geology of Rattlesnake Creek area, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 51 p. DAS61 Lipman (1976) Lipman, P.W., 1976, Caldera-collapse breccias in the western San Juan Mountains, Colorado: Geological Society of America Bulletin 87, p. 1397-1410. DAS62 Mapel and others (1965) Mapel, W.J., Read, W.H., and Smith, R.K., 1965, Geologic map and sections of the Doublespring quadrangle, Custer and Lemhi Counties, Idaho: U.S. Geological Survey Geologic Quadrangle Map GQ-464, scale 1 :62,500. DAS63 McCandless (1982) McCandless, D.O., 1982, A reevaluation of Cambrian through Middle Ordovician stratigraphy of the southern Lemhi Range: University Park, The Pennsylvania State University, M.S. thesis, 157 p. DAS64 Mcintyre and others (1982) Mcintyre, D.H., Ekren, E.B., and Hardyman, R.F., 1982, Stratigraphic and structural framework of the Challis Volcanics in the eastern half of the Challis 1 degree X 2 degrees quadrangle, in Bonnichsen, Bill, and Breckenridge, R. M., eds., Cenozoic Geology of Idaho: Idaho Bureau of Mines and Geology Bulletin 26, p. 3-22. DAS65 Motzer (1978) Motzer, W.E., 1978, Volcanic stratigraphy of an area southeast of the White Cloud Peaks, Sawtooth National Recreation Area, Custer County, Idaho: Moscow, University of Idaho, M.S. thesis, 115 p. DAS66 Nilsen (1977) Nilsen, T.H., 1977, Paleogeography of Mississippian turbidites in south-central Idaho: Society of Economic Petrologists and Mineralogists Pacific Coast Paleogeography Symposium 1, p. 275-298. DAS67 Peale (1982) Peale, R.N., 1982, Geology of the area southeast of Yellowjacket, Lemhi County, Idaho: Moscow, University of Idaho, M.S. thesis, 129 p. DAS68 Reid (1963) Reid, R.R., 1963, Reconnaissance geology of the Sawtooth Range: Idaho Bureau of Mines and Geology Pamphlet 129, 37 p. DAS69 Ross (1934) Ross, C.P., 1934, Geology and ore deposits of the Casto quadrangle, Idaho: U.S. Geological Survey Bulletin 854, 135 p. DAS70 Ross (1937) Ross, C.P., 1937, Geology and ore deposits of the Bayhorse region, Idaho: U.S. Geological Survey Bulletin 877, 161 p. DAS71 Ruppel (1975) Ruppel, E.T., 1975, Precambrian Y sedimentary rocks in east-central Idaho: U.S. Geological Survey Professional Paper 889-A, p. 1-23. DAS72 Ruppel and others (1975) Ruppel, E.T., Ross, R.J., Jr., and Schleicher, David, 1975, Precambrian Z and Lower Ordovician rocks in east-central Idaho: U.S. Geological Survey Professional Paper 889-B, p. 25-34. DAS73 Sandberg (1975) Sandberg, C.A., 1975, McGowan Creek Formation, new name for Lower Mississippian flysch sequence in east-central Idaho: U.S. Geological Survey Bulletin 1405-E, p. E1-E11. DAS74 Schmidt (1964) Schmidt, D.L., 1964, Reconnaissance petrographic cross section of the Idaho batholith in Adams and Valley Counties, Idaho: U.S. Geological Survey Bulletin 1181-G, 50 p. DAS75 Shannon and Reynolds (1975) Shannon, S.S., Jr., and Reynolds, S.J., 1975, A brief geological survey of the East Thunder Mountain mining district, Valley Co., Idaho: Idaho Bureau of Mines and Geology Information Circular 29, 13 p. DAS76 Streckeisen (1973) Streckeisen, A.L., chairman, and the lUGS Subcommission on the systematics of igneous rocks, 1973, Plutonic rocks classification and nomenclature recommended by the lUGS subcommission on the systematics of igneous rocks: Geotimes, v. 18, no. 10, p. 26-30. DAS77 Williams (1961) Williams, P.L., 1961, Glacial geology of Stanley Basin: Idaho Bureau of Mines and Geology Pamphlet 123, 29 p. DataSourcePolys_ID [DSrcPol_ID] (DataSourcePolys) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "DSP01" DataSourceID [DatSrcID] (ContactsAndFaults, DataSourcePolys, GenericPoints, GeologicLines, MapUnitPolys) Source(s) of data and/or geologic mapping used to compile original printed geologic map; alpha-numeric value used to link to DataSources table (foreign 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: "A line representing the boundary of the mapping area." 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) DAS02 Fisher and others (1992) Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. 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. DAS04 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 (for example, lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints). USGS NCGMP (2020) Example of values from the DescriptionOfMapUnits table: "Includes modem stream alluvium, terrace gravel, talus and related slope material, landslide debris, and unconsolidated glacial moraines and outwash gravel" Example of values from the ContactsAndFaults feature class: "contact, certain" 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: "DMU001" DescriptionSourceID [DesSrcID] (DescriptionOfMapUnits) Source(s) of map unit description; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) Values are unique within this database. Multiple values concatenated. Examples of values: "DAS02" and "DAS02 | DAS18 | DAS70"; see DataSources_ID attribute information. ErrorMeasure [ErrMea] (GeochronPoints) Measure of error whose values are recorded in AgePlusError and AgeMinusError fields. USGS NCGMP (2020) All values are NULL. Not provided from source. 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) FieldSampleID [FieSamID] (GeochronPoints) Sample ID given at time of collection. USGS NCGMP (2020) Examples of values: "09" or "C4" FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP (2020) Examples of values: "Volcaniclastic and sedimentary rocks of the Custer graben area; Eocene Challis Volcanic Group" or "Tuff of Pennal Gulch; Southeastern part of quadrangle; Eocene 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. Examples of values: "GNP1" GeochronPoints_ID [GeoPoi_ID] (GeochronPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Examples of values: "GCR001" 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: "------Fine-grained, felsic-composition intrusive igneous rock" or "----Quartzite" 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. Examples of values: "GLO01" or "GLO12" 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: "08-02" or "03-01-02-03-05" IdentityConfidence [IdeConf] (ContactsAndFaults, GeologicLines, MapUnitPolys, OrientationPoints) 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. Value of -9 indicates no measurement available. USGS NCGMP (2020) -9 80 degrees (angular measure) 1 IndentedName [IndNam] (GeoMaterialDict) Name with addition of leading spaces to help show rank within a hierarchical list. USGS NCGMP (2020) Examples of values: "------Pyroclastic flows" or "------Sandstone and 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 (DescriptionOfMapUnits, ContactsAndFaults, GenericPoints, GeochronPoints, GeologicLines, MapUnitPolys, OrientationPoints) 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: "_cqs" or "Van Horn Peak Cauldron Complex" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, GenericPoints, GeochronPoints, GeologicLines, OrientationPoints) Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. USGS NCGMP (2020) Value of -9 indicates value is unknown. LocationSourceID [LocSrcID] (GenericPoints, GeochronPoints, OrientationPoints) Source of location; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) DAS01 Fisher and others (2000) Digital spatial data for Fisher and others (1992) prepared by Green, G., https://pubs.usgs.gov/imap/i-1819/. DAS02 Fisher and others (1992) Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. MapUnit (DescriptionOfMapUnits, GenericPoints, GeochronPoints, MapUnitPolys, OrientationPoints) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP (2020) Ccqs Quartzite, shale, and carbonate rocks of Squaw Creek area Fisher and others (1992) Cg Garden Creek Phyllite Fisher and others (1992) Dab Informal units B (Middle? and Lower Devonian) and A (Lower Devonian) of Hays and others (1978, 1980) and Beartooth Butte Formation (Lower Devonian), undivided Fisher and others (1992) Dg Grand View Dolomite Fisher and others (1992) Dgj Grand View and Jefferson Dolomites, undivided Fisher and others (1992) Dj Jefferson Dolomite Fisher and others (1992) dr Diorite, quartz diorite, and syenite Fisher and others (1992) IPwl Lower part of the Wood River Formation Fisher and others (1992) Jg Gabbro Fisher and others (1992) Kg Muscovite-biotite granodiorite and granite Fisher and others (1992) Kgd Biotite granodiorite Fisher and others (1992) Kgdh Hornblende-biotite granodiorite Fisher and others (1992) Kgdp Porphyritic biotite granodiorite and granite Fisher and others (1992) Kgds Sphene-enriched biotite granodiorite Fisher and others (1992) Ki Granitic rocks of Idaho batholith, undivided Fisher and others (1992) Kim Mixed rock units Fisher and others (1992) Klg Leucocratic granite Fisher and others (1992) Kt Tonalite and granodiorite Fisher and others (1992) Mcb Copper Basin Formation, lower part Fisher and others (1992) Mmc Middle Canyon Formation Fisher and others (1992) Mmg McGowan Creek Formation Fisher and others (1992) Msp Scott Peak Formation Fisher and others (1992) Msuc Surrett Canyon and South Creek Formations, undivided Fisher and others (1992) Mw White Knob Limestone Fisher and others (1992) Oc Upper carbonate unit Fisher and others (1992) OCb Bayhorse Dolomite Fisher and others (1992) OCq Quartzite Fisher and others (1992) OCrr Siltstone, sandy siltstone, and quartzite of Rob Roy mine area Fisher and others (1992) OCZl Interbedded quartzite, dolomite, and argillite of Leaton Gulch and Pennal Gulch areas Fisher and others (1992) Op Black, carbonaceous, graptolite-bearing shale and argillite Fisher and others (1992) Or Ramshorn slate Fisher and others (1992) Ose Saturday Mountain Formation, Kinnikinic Quartzite, and Ella Dolomite, undivided Fisher and others (1992) Pg Grand Prize Formation Fisher and others (1992) PIPw Upper part of the Wood River Formation Fisher and others (1992) Pzsr Salmon River assemblage Fisher and others (1992) Qa Alluvium, undivided Fisher and others (1992) Qd Quaternary deposits, undivided Fisher and others (1992) Qf Alluvial-fan deposits Fisher and others (1992) Ql Landslide and related deposits Fisher and others (1992) Qm Glacial deposits, undivided Fisher and others (1992) Qtr Travertine Fisher and others (1992) rp Roof pendants and xenoliths of metamorphic rock in Idaho batholith, undivided Fisher and others (1992) rpc Calc-silicate rock roof pendant of metamorphic rock in Idaho batholith Fisher and others (1992) rpq Quartzite roof pendant of metamorphic rock in Idaho batholith Fisher and others (1992) rps Schist roof pendant of metamorphic rock in Idaho batholith Fisher and others (1992) Sl Laketown Dolomite Fisher and others (1992) sr Quartz syenite, syenite, and granite Fisher and others (1992) Srm Roberts Mountains Formation Fisher and others (1992) Tap Alkali feldspar-plagioclase tuff of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tar Arkosic sandstone and conglomerate of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Tb Basaltic lava of Castle Rock and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tbal Mafic lava; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tbam Mafic lava; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tbau Mafic lava; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tbc Lava and ash-flow tuff of Burnt Creek; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tbr Buff rhyolite of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tc Tuffs of Camas Creek-Black Mountain; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tcb Columbia River Basalt Group Fisher and others (1992) Tcg Conglomerate and fanglomerate; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tck Tuff of Castle Rock; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tcr Tuff of Challis Creek, outflow unit of the Corral Creek cauldron segment and area north and east of Challis; Eocene Challis Volcanic Group Fisher and others (1992) Tcrl Tuff of Challis Creek, lower unit; Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tcrm Tuff of Challis Creek, middle unit; Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tcru Tuff of Challis Creek, upper unit; Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tcs Tuffs of Camas Creek-Black Mountain and bedded strata, undivided; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tcv Challis Volcanic Group, undivided of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Td Dikes of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Tdb Rhyodacite domes at Bradbury Flat; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tdbi Rhyodacite plugs at Bradbury Flat; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tdc Diorite complex of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tdf Dacitic and rhyodacitic lava of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tdi Dikes and plugs of intermediate composition of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tdl Diabase and lamprophyre dikes; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tdm Tuff of Degan Mountain of the Corral Creek cauldron segment and area north and east of Challis; Eocene Challis Volcanic Group Fisher and others (1992) Tdq Dime- and quarter-size lapilli tuff of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tdql Lower densely welded tuff of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tds Beds of Dewey mine; Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tdt Dirty tuff of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tdu Tertiary dikes, undivided; Western and south-central parts of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Te Tuff of Ellis Creek of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tem Tuff of Eightmile Creek of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tfd Felsic dike rocks of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tfl Flow-layered rhyolite of Castle Rock and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tfr Flow-laminated rhyolite or quartz latite lava of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tg Granite of the Casto pluton; Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tgc Tuff of Germania Creek; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tgi Intrusive rocks east of Bonanza of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Tgp Gray porphyry of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Th Tuff of Herd Lake; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Thg Hornblende granite of the Casto pluton; Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tib Mafic intrusive rocks; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tii Intermediate dikes or flows of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Til Potassium-rich andesite, latite, and basalt intrusions; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tinm Intermediate and mafic intrusions of the Corral Creek cauldron segment and area north and east of Challis; Eocene Challis Volcanic Group Fisher and others (1992) Tip Intermediate intrusive rocks of Spider Creek-Parker Creek of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tl Potassium-rich andesite, latite, and basalt lava of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tla Latite of Lookout Mountain; Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tll Lower latite lava of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tlt Lithic tuff of Corral Creek of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tmb Megabreccia of Ibex Creek of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tmi Mafic intrusions of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tmt Monolith-forming tuff of Castle Rock and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tmx Megabreccia of the Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tmz Intermediate lava and breccia of mixed zone of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Toc Colluvium of Panther Creek of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tp Tuff of Pennal Gulch of Camas Creek-Black Mountain and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tpa Payette Formation Fisher and others (1992) Tpc Tuffs of Pennal Gulch and Camas Creek-Black Mountain, undivided of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Tpe Intrusive rocks of Pats Creek-Upper Eddy Creek of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tpl Perlitic rhyolite of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tpq Quartz-phenocryst perlite of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tqb Quartz-biotite tuff of Castle Rock and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tqp Quartz porphyry intrusions of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tr Rhyolite intrusions of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Trb Rhyolite of Red Butte of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Trd Rhyolite dikes of the Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Trf Rhyolite dikes, plugs, and flows of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tri Rhyolite stock; Western and south-central parts of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Trl Rhyolite lava of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Trm Rhyolite of Mill Creek Summit of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Trr Tuff of Red Ridge; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tsb Sedimentary breccia of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tsc Tuff of Sage Creek; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tsd Caldera-wall slump debris (megabreccia) of the Tuff of Challis Creek; Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Tsl Lower tuff of the Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tslu Uppermost tuff that has mineralogy of lower tuff of the Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tsrl Rhyolite lava or tuff of the Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tss Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tsu Upper tuff of the Sunnyside tuff of Shannon and Reynolds (1975); Thunder Mountain cauldron complex and environs, Eocene Challis Volcanic Group Fisher and others (1992) Tsy Syenite intrusion; Southeastern part of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Ttm Tuff of Table Mountain of Camas Creek-Black Mountain and related rocks; Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tva Andesite; Western and south-central parts of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tvc Volcaniclastic rocks of the Custer graben area; Eocene Challis Volcanic Group Fisher and others (1992) Tvp Tuff of Van Horn Peak of the Northern part of Van Horn Peak cauldron complex and Panther Creek graben; Eocene Challis Volcanic Group Fisher and others (1992) Tvr Rhyolite flows; Western and south-central parts of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Tvs Volcaniclastic and sedimentary rocks of the Twin Peaks caldera and southern part of Van Horn Peak cauldron complex; Eocene Challis Volcanic Group Fisher and others (1992) Twt Welded tuff of Obsidian; Western and south-central parts of quadrangle; Eocene Challis Volcanic Group Fisher and others (1992) Ya Apple Creek Formation Fisher and others (1992) Yb Big Creek Formation Fisher and others (1992) Yg Gunsight Formation Fisher and others (1992) Yh Hoodoo Quartzite Fisher and others (1992) Yl Lawson Creek Formation Fisher and others (1992) Ys Swauger Formation Fisher and others (1992) Yy Yellowjacket Formation Fisher and others (1992) 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] (GeochronPoints) Earth-material which was analyzed. USGS NCGMP (2020) Examples of values: "hornblende" or "muscovite" 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: "Jefferson Dolomite" or "Quartz syenite, syenite, and granite" Notes (DataSources, ContactsAndFaults, DataSourcePolys, GenericPoints, GeochronPoints, GeologicLines, MapUnitPolys, OrientationPoints) Additional information specific to a particular feature or table entry. USGS NCGMP (2020) Free text. Examples of values: "changed from 'fault' to 'fault, normal' to match the printed map" or "changed from Tcv to Twt to match the printed map" NumericAge (GeochronPoints) Numeric age of sample, measured in AgeUnits. May be interpreted from one or several analyses; is not necessarily the date calculated from a single set of measurements. USGS NCGMP (2020) 36.7 98.1 Ma (Mega-annum, one million years) 0.1 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. OrientationConfidenceDegrees [OriConDeg] (OrientationPoints) Estimated angular precision of combined azimuth AND inclination measurements, in degrees. USGS NCGMP (2020) Positive real number. Value of -9 indicates value is unknown. OrientationPoints_ID [OriPoi_ID] (OrientationPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Examples of values: "ORP01" or "ORP13" OrientationSourceID [OriSrcID] (OrientationPoints) Source of orientation data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) DAS01 Fisher and others (2000) Digital spatial data for Fisher and others (1992) prepared by Green, G., https://pubs.usgs.gov/imap/i-1819/. DAS02 Fisher and others (1992) Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1 degree x 2 degrees quadrangle, Idaho: U.S. Geological Survey, Miscellaneous Investigations Series Map I-1819, scale 1:250,000. 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, GeochronPoints, OrientationPoints) Scale at which the observation should be plotted. Value is scale of the map. USGS NCGMP (2020) Positive real number. Using original map scale of 250000. Shape (ContactsAndFaults, DataSourcePolys, GenericPoints, GeochronPoints, GeologicLines, MapUnitPolys, OrientationPoints) 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) An Esri default field that contains the area of a polygon. The value is automatically generated in units of the feature class. Esri 7456.6766 17674967601.9797 square meters 0.000001 Shape_Length [Shp_Len] (ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPolys) 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 51.952746 1698837.641956 meters 0.000001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP (2020) Examples of values: "Kiilsgaard (1983)" or "Ekren and Modreski (unpublished mapping 1979-81)" StationsID (GenericPoints, GeochronPoints, 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, GeochronPoints, GeologicLines, MapUnitPolys, OrientationPoints) 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: "02.02.01" or "Dab" 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, GeochronPoints, GeologicLines, OrientationPoints) 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) 40Ar-39Ar A variation of the potassium-argon age method in which the sample to be dated is first irradiated with neutrons, converting some potassium-39 to argon-39. Argon is then extracted from the sample (either in one step or incrementally), and its isotopic composition analyzed. The amount of argon-39 is a measure of potassium content, and the ratio of radiogenic argon-40 to argon-39 is a function of age. It is sometimes possible to detect extraneous argon, and to determine whether or not the dated material has been disturbed by later thermal or chemical events (Miller, 1972). Neuendorf and others (2011) 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, 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) 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) dike A tabular igneous intrusion that cuts across the bedding or foliation of the country rock. Neuendorf and others (2011) fault A discrete surface or zone of discrete surfaces separating two rock masses across which one mass has slid past the other. 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°, and in most cases close to 60°. Neuendorf and others (2011) fault, oblique-slip, right-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 right. Neuendorf and others (2011) fault, reverse, high-angle A fault on which the hanging wall has moved upward relative to the footwall. The dip of the fault is usually greater than 45°. 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° or less over much of its extent, on which the hanging wall has moved upward relative to the footwall. Neuendorf and others (2011) 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) map boundary A line representing the boundary of the mapping area. Fisher and others (1992) open pit mine A mine working or excavation that is open to the surface. Also referred to as an open cut or open cast mine. Neuendorf and others (2011) potassium-argon Determination of the age of a mineral or rock in years, based on measurement of the ratio of radiogenic argon-40 to potassium-40 and the known radioactive decay rate of potassium-40 to argon-40. Neuendorf and others (2011) syncline A fold of which the core contains the stratigraphically younger rocks; it is generally concave upward. Neuendorf and others (2011) trench Any long, narrow cut or excavation produced naturally in the Earth's surface by erosion or tectonic movements. Also, a similar feature produced aritifically, such as a ditch. Neuendorf and others (2011) water The outline of a body of water (lake) and/or stream. Fisher and others (1992) URL (DataSources) Uniform Resource Locator (URL) or Digital Object Identifier (DOI), identifies a document on the World Wide Web. USGS NCGMP (2020) Examples of values: "https://doi.org/10.3133/tm11B10" 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/P9ITT4YF None. No fees are applicable for obtaining the data set. 20210429 Carma A San Juan U.S. Geological Survey, ROCKY MOUNTAIN REGION Physical Scientist mailing address

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-2450 303-236-3200 csanjuan@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998