Micah A. Hernandez Montana E. Hauke 20240620 vector digital data Denver, Colorado U.S. Geological Survey Additional information about Originators: Hernandez, M.A., https://orcid.org/0000-0002-9656-0832; Hauke, M.E., https://orcid.org/0000-0003-3720-945X Suggested citation: Hernandez, M.A., and Hauke, M.E., 2024, GIS data for geologic map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana: U.S. Geological Survey data release, https://doi.org/10.5066/P9E0IPJR. https://doi.org/10.5066/P9E0IPJR Edward T. Ruppel J. Michael O'Neill David A. Lopez 1993 1.0 publication U.S. Geological Survey Miscellaneous Investigations Series I-1803-H Denver, Colorado U.S. Geological Survey Suggested citation: Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H, scale 1:250,000, https://doi.org/10.3133/i1803H. https://doi.org/10.3133/i1803H This U.S. Geological Survey (USGS) data release provides an updated digital geospatial database for the geologic map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana (Ruppel and others, 1993). Attribute tables and geospatial features (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-1803-H (Ruppel and others, 1993). 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 4.3 million acre, geologically complex Dillon 1 x 2 degrees quadrangle, at a publication scale of 1:250,000. The map covers primarily Beaverhead, Madison, Silver Bow, Deer Lodge, and Lemhi Counties, but also includes minor parts of Ravalli, Granite, and Jefferson Counties. These GIS data supersede those in the interpretive report. References: Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H, scale 1:250,000, https://pubs.usgs.gov/imap/i-1803-h/. 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 the data release is to produce a Geologic Map Schema (GeMS)-compliant version for the geologic map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana, that updates the geospatial data published as part of U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H (Ruppel and others, 1993). 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. Dillon_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 (Dillon_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. ----GeologicLines: line layer representing the locations of dikes, fold axes, and other linear features. ----MapUnitPolys: polygon layer representing the distribution of geologic map units. --DataSources: table that lists sources and (or) references used to derive spatial features (lines and 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. --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. 20240620 publication date Complete None planned -114.2657 -111.7676 46.2452 44.7526 ISO 19115 Topic Category geoscientificInformation USGS Thesaurus geospatial datasets geographic information systems geology geologic maps bedrock geologic units structural geology None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics and Geochemistry Science Center GGGSC National Cooperative Geologic Mapping Program NCGMP National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:63b468e1d34e92aad3ca9d38 Geographic Names Information System (GNIS) Beaverhead County Deer Lodge County Dillon Granite County Jefferson County Lemhi County Madison County Ravalli County Silver Bow County Common geographic areas Idaho ID Montana MT 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 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 FEDMAP component of the National Cooperative Geologic Mapping Program. Microsoft Windows 10 Enterprise, Version 10 (Build 18363); Esri ArcGIS Pro 3.1.1 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 (Ruppel and others, 1993) 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. Edward T. Ruppel J. Michael O'Neill David A. Lopez 1993 1.0 publication U.S. Geological Survey Miscellaneous Investigations Series I-1803-H Denver, Colorado U.S. Geological Survey Suggested citation: Ruppel, E.T., O'Neill, J.M., and Lopez, D.A., 1993, Geologic Map of the Dillon 1 x 2 degrees quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H, scale 1:250,000, https://doi.org/10.3133/i1803H. https://doi.org/10.3133/i1803H 250000 Digital and/or Hardcopy 1993 publication date Ruppel and others (1993) 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://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 Geosciences 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. Original base materials used to create U.S. Geological Survey Map I-1803-H were digitized by staff at the EROS Data Center in Sioux Falls, South Dakota. The files were transferred to the Montana Bureau of Mines and Geology (MBMG) in Butte, Montana. MBMG staff assembled and attributed the digital geology in ArcInfo format. 1997 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 (GeMS) standard for geologic map publications (USGS NCGMP, 2020). Definitions of these values are derived from the source publication (Ruppel and others, 1993), 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_9931.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 also matched to the original publication as best possible using the FGDC Digital Cartographic Standard for Geologic Map Symbolization (FGDC, 2006). These values are provided in the Symbol attribute fields and the included Esri Style file. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. The geodatabase was confirmed to be GeMS compliant using validation tools. USGS NCGMP (2020) Ruppel and others (1993) Neuendorf and others (2011) FGDC (2006) 20221215 Vector G-polygon 2457 String 7090 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: "Holocene" or "Upper and Middle Cambrian" 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: "black dots" or "red circles" 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) Examples of values: "255,235,102" or "255,222,222" 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 (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP(2020) DAS001 Ruppel and others (1993) Ruppel, E.T., O'Neill, M.J., and Lopez, D.A., 1993, Geologic map of the Dillon 1 degree x 2 degrees quadrangle, Idaho and Montana: U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H, scale 1:250,000. DAS002 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. DAS003 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. DAS004 Alexander (1955) Alexander, R.G., 1955, Geology of the Whitehall area, Montana: Yellowstone-Bighorn Research Association, Inc., Yellowstone Bighorn Research Project Contribution 195, 111 p. DAS005 Anderson (1956) Anderson, A.L., 1956, Geology and mineral resources of the Salmon quadrangle, Lemhi County, Idaho: Idaho Bureau of Mines and Geology Pamphlet 106, 102 p. DAS006 Anderson (1957) Anderson, A.L., 1957, Geology and mineral resources of the Baker quadrangle, Lemhi County, Idaho: Idaho Bureau of Mines and Geology Pamphlet 112, 71 p. DAS007 Anderson (1959) Anderson, A.L., 1959, Geology and mineral resources of the North Fork quadrangle, Lemhi County, Idaho: Idaho Bureau of Mines and Geology Pamphlet 118, 92 p. DAS008 Becker (1961) Becker, H.F., 1961, Oligocene plants from the upper Ruby River basin, southwestern Montana: Geological Society of America Memoir 82, 127 p. DAS009 Berg (1979) Berg, R.B., 1979, Precambrian geology of the west part of the Greenhorn Range, Madison County, Montana: Montana Bureau of Mines and Geology Geologic Map Series GM 6, 12 p. DAS010 Brumbaugh (1973) Brumbaugh, D.S., 1973, Structural analysis of the complexly deformed Big Hole River area, Madison, Beaverhead, and Silver Bow Counties, Montana: Bloomington, Indiana University, Ph.D. thesis, 96 p. DAS011 Burger (1967) Burger, H.R., III, 1967, Bedrock geology of the Sheridan district, Madison County, Montana: Montana Bureau of Mines and Geology Memoir 41, 22 p. DAS012 Calbeck (1975) Calbeck, J.M., 1975, Geology of the central Wise River Valley, Pioneer Mountains, Beaverhead County, Montana: Missoula, University of Montana, M.S. thesis, 89 p. DAS013 Coppinger (1974) Coppinger, Walter, 1974, Stratigraphic and structural study of the Belt Supergroup and associated rocks in a portion of the Beaverhead Mountains, southwest Montana and east-central Idaho: Oxford, Ohio, Miami University, Ph.D. thesis, 224 p. DAS014 Dorr and Wheeler (1964) Dorr, J.A., Jr., and Wheeler, W.H., 1964, Cenozoic paleontology, stratigraphy, and reconnaissance geology of the upper Ruby River basin, southwestern Montana: Contribution from Museum of Paleontology, University of Michigan, v. 13, no. 12, p. 297-339 DAS015 Duncan (1976) Duncan, M.S., 1976, Structural analysis of the pre-Beltian rocks of the southern Highland Mountains, Madison and Silver Bow Counties, Montana: Bloomington, Indiana University, Ph.D. thesis, 222 p. DAS016 Elliot and others (1985) Elliot, J.E., Wallace, C.A., O'Neill, J.M., Hanna, W.F., Rowan, LC., Segal, D.B., Zimbelman, D.R., Pearson, R.C., Close, T.J., Federspiel, F.E., Causey, J.D., Willett, S.L., Morris, R.W., and Huffsmith, J.R., 1985, Mineral resource potential map of the Anaconda-Pintlar Wilderness and contiguous roadless area, Granite, Deer Lodge, Beaverhead, and Ravalli Counties, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-1633-A, scale 1:50,000. DAS017 Flood (1974) Flood, R.E., 1974, Structural geology of the upper Fishtrap Creek area, central Anaconda Range, Deer Lodge County, Montana: Missoula, University of Montana, M.A. thesis, 71 p. DAS018 Fraser and Waldrop (1972) Fraser, G.D., and Waldrop, H.A., 1972, Geologic map of the Wise River quadrangle, Silver Bow and Beaverhead Counties, Montana: U.S. Geological Survey Geologic Quadrangle Map GQ-988, scale 1:24,000. DAS019 Garihan (1979) Garihan, J.M., 1979, Geology and structure of the central Ruby Range, Madison County, Montana-Summary: Geological Society of America Bulletin, v. 90, Part I, no. 4, p. 323-326. DAS020 Heinrich (1960) Heinrich, E.W., 1960, Geology of the Ruby Mountains and nearby areas in southwestern Montana: Montana Bureau of Mines and Geology Memoir 38, p. 15-40. DAS021 James (1981) James, H.L., 1981, Bedded Precambrian iron deposits of the Tobacco Root Mountains, southwestern Montana: U.S. Geological Survey Professional Paper 1187, 16 p. DAS022 James and Weir (1972) James, H.L., and Weir, KL, 1972, Geologic map of the Carter Creek iron deposit: U.S. Geological Survey Miscellaneous Field Studies Map MF-359, scale 1:3,600. DAS023 James and others (1969) James, H.L., Wier, KL, and Shaw, KW., 1969, Map showing lithology of Precambrian rocks in the Christensen Ranch quadrangle, Montana: U.S. Geological Survey Open-File Report, scale 1:24,000. DAS024 Johns (1961) Johns, W.M., 1961, Geology and ore deposits of the southern Tidal Wave district, Madison County, Montana: Montana Bureau of Mines and Geology Bulletin 24, 53 p. DAS025 Karasevich (1981) Karasevich, LP., 1981, Geologic map of the northern Ruby Range, Madison County, Montana: Montana Bureau of Mines and Geology Geologic Map GM 25, scale 1:24,000. DAS026 Karlstrom (1948) Karlstrom; T.N.V., 1948, Geology and ore deposits of the Hecla Mining district, Beaverhead County, Montana: Montana Bureau of Mines and Geology Memoir 25, 87 p. DAS027 Klepper (1950) Klepper, M.R., 1950, A geologic reconnaissance of parts of Beaverhead and Madison Counties, Montana: U.S. Geological Survey Bulletin 969-C, p. 55-85. DAS028 Kuenzi and Fields (1971) Kuenzi, W.D., and Fields, R.W., 1971, Tertiary stratigraphy, structure, and geologic history, Jefferson Basin, Montana: Geological Society of America Bulletin, v. 82, p. 3374-3394. DAS029 Levandowski (1956) Levandowski, D.W., 1956, Geology and mineral deposits of the Sheridan-Alder area, Madison County, Montana: Ann Arbor, University of Michigan, Ph.D. thesis, 318 p. DAS030 Lowell (1949) Lowell, W.R., 1949, Geologic map of the Small Horn Canyon area, Beaverhead County, Montana: U.S. Geological Survey Open-File Report. DAS031 Lowell (1965) Lowell, W.R., 1965, Geologic map of the Bannack-Grayling area, Beaverhead County, Montana: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-433, scale 1:31,680. DAS032 MacKenzie (1949) MacKenzie, W.O., 1949, Geology and ore deposits of a section of the Beaverhead Range east of Salmon, Idaho: Moscow, University of Idaho, M.S. thesis, 53 p. DAS033 Mann (1954) Mann, J.A., 1954, Geology of part of the Gravelly Range, Montana: Yellowstone-Bighorn Research Association, Inc., Yellowstone-Bighorn Research Project Contribution 190, 92 p. DAS034 Moore (1956) Moore, G.T., 1956, The geology of the Mount Fleecer area, Montana: Bloomington, Indiana University, Ph.D. thesis, 88 p. DAS035 Myers (1952) Myers, W.B., 1952, Geology and mineral deposits of the northwest quarter of the Willis quadrangle and adjacent Brown's Lake area, Beaverhead County, Montana: U.S. Geological Survey Open-File Report 147, 46 p., 2 pls. DAS036 Noel (1956) Noel, J.A., 1956, The geology of the east end of the Anaconda Range and adjacent areas, Montana: Bloomington, Indiana University, Ph.D. thesis, 74 p. DAS037 Okuma (1971) Okuma, A.F., 1971, Structure of the southwestern Ruby Range near Dillon, Montana: University Park, Pennsylvania State University, Ph.D. thesis, 122 p. DAS038 O'Neill and others (1988) O'Neill, J.M., Duncan, M.S., and Zartman, R.E., 1988, An Early Proterozoic gneiss dome in the Highland Mountains, southwestern Montana, in Lewis, S.E., and Berg R.B., eds., Precambrian and Mesozoic plate margins: Montana Bureau of Mines and Geology Special Publication 96, p. 81-88. DAS039 Pearson and Zen (1985) Pearson, R.C., and Zen, E-an, 1985, Geologic map of the eastern Pioneer Mountains, Beaverhead County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-1806-A, scale 1:50,000. DAS040 Pecora (1981) Pecora, W.C., 1981, Bedrock geology of the Blacktail Mountains, southwestern Montana: Middletown, Connecticut, Wesleyan University, M.A. thesis, 203 p. DAS041 Petkewich (1972) Petkewich, R.M., 1972, Tertiary geology and paleontology of the Beaverhead East area, southwestern Montana: Missoula, University of Montana, Ph.D. thesis, 365 p. DAS042 Prostka (1966) Prostka, H.J., 1966, Igneous geology of the Dry Mountain quadrangle, Jefferson County, Montana: U.S. Geological Survey Bulletin 1221-F, 21 p. DAS043 Reid (1957) Reid, R.R., 1957, Bedrock geology of the north end of the Tobacco Root Mountains, Madison County, Montana: Montana Bureau of Mines and Geology Memoir 36, 27 p. DAS044 Richards and Pardee (1925) Richards, R.W., and Pardee, J.T., 1925, The Melrose phosphate field, Montana: U.S. Geological Survey Bulletin 780, p. 1-32. DAS045 Ross (1925) Ross, C.P., 1925, The copper deposits near Salmon, Idaho: U.S. Geological Survey Bulletin 774, 43 p. DAS046 Sahinen (1939) Sahinen, U.M., 1939, Geology and ore deposits of the Rochester and adjacent mining districts, Madison County, Montana: Montana Bureau of Mines and Geology Memoir 19, 53 p. DAS047 Sahinen (1950) Sahinen, U.M., 1950, Geology and ore deposits of the Highland Mountains, southwestern Montana: Montana Bureau of Mines and Geology Memoir 32, 63 p. DAS048 Samuelson and Schmidt (1981) Samuelson, KJ., and Schmidt, C.J., 1981, Structural geology of the western Tobacco Root Mountains, southwestern Montana, in Tucker, T.E., ed., Southwest Montana: Montana Geological Society Field Conference and Symposium Guidebook, p. 191-199. DAS049 Schmidt (1975) Schmidt, C.J., 1975, An analysis of folding and faulting in the northern Tobacco Root Mountains, southwest Montana: Bloomington, Indiana University, Ph.D. thesis, 480 p. DAS050 Smedes (1967) Smedes, H. W., 1967, Geologic map of the Butte South quadrangle, Silver Bow and Madison Counties, Montana: U.S. Geological Survey Open-File report, scale 1:24,000. DAS051 Tansley and others (1933) Tansley, Wilfred, Schafer, P.A., and Hart, L.H., 1933, A geological reconnaissance of the Tobacco Root Mountains, Madison County, Montana: Montana Bureau of Mines and Geology Memoir 9, 57 p. DAS052 Theodosius (1956) Theodosius, S.D., 1956, Geology of the Melrose area, Beaverhead and Silver Bow Counties, Montana: Bloomington, Indiana University, Ph.D. thesis, 118 p. DAS053 Thomas (1981) Thomas, J.D., 1981, Structural geology of the Badger Pass area, southwestern Montana, in Tucker, T.E., ed., Southwest Montana: Montana Geological Society Field Conference and Symposium Guidebook, p. 211-214. DAS054 Tucker (1975) Tucker, D.R., 1975, Stratigraphy and structure of the Precambrian Y (Belt?) metasedimentary and associated rocks, Goldstone Mountain quadrangle, Lemhi County, Idaho, and Beaverhead County, Montana: Oxford, Ohio, Miami University, Ph.D. thesis, 221 p. DAS055 Tysdal (1970) Tysdal, R.G., 1970, Geology of the north end of the Ruby Range, southwestern Montana: Missoula, University of Montana, Ph.D. thesis, 187 p. DAS056 Tysdal (1988) Tysdal, R.G., 1988, Geologic map of the northeast flank of the Blacktail Mountains, Beaverhead County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2041, scale 1:24,000. DAS057 Vitaliano and Cordua (1979) Vitaliano, C.J., and Cordua, W.S., 1979, Geologic map of the southern Tobacco Root Mountains, Madison County, Montana: Geological Society of America Map and Chart Series MC-31, scale 1:62,500. DAS058 Zen (1988) Zen, E-an, 1988, Bedrock geology of the Vipond Park 15-minute, Stine Mountain 7 1/2-minute, and Maurice Mountain 7 1/2- minute quadrangles, Pioneer Mountains, Beaverhead County, Montana: U.S. Geological Survey Bulletin 1625, 49 p. DAS059 Desmarais and others (unpublished mapping) N.R. Desmarais, D.L. Hanneman, D.A. Lopez, E.T. Ruppel, and L.W. Snee, U.S. Geological Survey unpublished mapping DAS060 Pearson and Ruppel (unpublished mapping) R.C. Pearson and E.T. Ruppel, U.S. Geological Survey unpublished mapping DAS061 Klepper and O'Neill (unpublished mapping) M.R. Klepper and J.M. O'Neill, U.S. Geological Survey, unpublished mapping DAS062 Arth and others (1986) Arth, J.G., Zen, E-an, Sellers, George, and Hammerstrom, Jane, 1986, High initial Sr Isotope ratios and evidence for magma mixing in the Pioneer batholith of southwest Montana: Journal of Geology, v. 94, p. 419-430. DAS063 Berger and others (1983) Berger, B.R., Snee, L W., Hanna, William, and Benham, J.R., 1983, Mineral resource potential map of the West Pioneer Wilderness Study Area, Beaverhead County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-1585-A, scale 1:50,000. DAS064 Cavender (1977) Cavender, T.M., 1977, A new Tertiary fish fauna from southwestern Montana: Geological Society of America Abstracts with Programs, v. 9, no. 6, p. 715. DAS065 Daniel and Berg (1981) Daniel, Faith, and Berg, R.B., 1981, Radiometric dates of rocks in Montana: Montana Bureau of Mines and Geology Bulletin 114, 136 p. DAS066 Desmarais (1981) Desmarais, N.R., 1981, Metamorphosed Precambrian ultramafic rocks in the Ruby Range, Montana: Precambrian Research, v. 16, p. 67-101. DAS067 Desmarais (1983) Desmarais, N.R., 1983, Geology and geochronology of the Chief Joseph plutonic-metamorphic complex, Idaho-Montana: Seattle, University of Washington, Ph.D. thesis, 150 p. DAS068 Dyman (1985a) Dyman, T.S., 1985a, Petrographic data from the Lower Cretaceous Blackleaf Formation and the lower Upper Cretaceous Frontier Formation (lower part) in Beaverhead and Madison Counties, Montana: U.S. Geological Survey Open-File Report 85-593, 19 p. DAS069 Dyman (1985b) Dyman, T.S., 1985b, Measured stratigraphic sections of Lower Cretaceous Blackleaf Formation and lower Upper Cretaceous Frontier Formation (lower part) in Beaverhead and Madison Counties, Montana: U.S. Geological Survey Open-File Report 85-431, 70 p. DAS070 Dyman (1985c) Dyman, T.S., 1985c, Preliminary chart showing stratigraphic correlation and lithofacies description for the Lower Cretaceous Blackleaf Formation and lower Upper Cretaceous Frontier Formation (lower part) in Beaverhead and Madison Counties, Montana: U.S. Geological Survey Open-File Report 85-729, 9 p., 1 pl. DAS071 Dyman and Nichols (1988) Dyman, T.S., and Nichols, D.J., 1988, Stratigraphy of the mid-Cretaceous Blackleaf and lower part of the Frontier Formations in parts of Beaverhead and Madison Counties, Montana: U.S. Geological Survey Bulletin 1773-B, 31 p. DAS072 Dyman and Tysdal (1990) Dyman, T.S., and Tysdal, R.G., 1990, Correlation chart of Lower and Upper Cretaceous Blackleaf Formation, Lima Peaks area to eastern Pioneer Mountains, southwestern Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2119. DAS073 Dyman and others (1989) Dyman, T.S., Perry, W.J., Jr., Nichols, D.J., Davis, LE., and Haley, J.C., 1989, Stratigraphy, petrology, and provenance of the Cenomanian to Turonian Frontier Formation near Lima, southwest Montana, in French, D.E., and Grabb, R.F., Montana Geological Society 1989 Field Conference Guidebook: p. 103-114 DAS074 Emmons and Calkins (1913) Emmons, W.H., and Calkins, F.C., 1913, Geology and ore deposits of the Phillipsburg quadrangle, Montana: U.S. Geological Survey Professional Paper 78, 27Lp. DAS075 Evans and Zartman (1990) Evans, K.V., and Zartman, R.E., 1990, U-Th-Pb and Rb-Sr geochronology of Middle Proterozoic granite and augen gneiss, Salmon River Mountains, east-central Idaho: Geological Society of America Bulletin, v. 102, p. 63-73. DAS076 Hanneman (1989) Hanneman, D.L, 1989, Cenozoic basin evolution in a part of southwestern Montana: Missoula, University of Montana, Ph.D. thesis, 34 7 p. DAS077 Harrison (1982) Harrison, Sylvia, 1982, Stratigraphy of Tertiary sedimentary rocks near Salmon, Idaho: Geological Society of America Abstracts with Programs, v. 14, no. 6, p. 314. DAS078 Harrison (1985) Harrison, Sylvia, 1985, Sedimentology of Tertiary sedimentary rocks near Salmon, Idaho: Missoula, University of Montana, Ph.D. thesis, 175 p. DAS079 James (1990) James, H.L., 1990, Precambrian geology and bedded iron deposits of the southwestern Ruby Range, Montana, with a section on The Kelly iron deposit of the northeastern Ruby Range: U.S. Geological Survey Professional Paper 1495, 39 p., 2 pl. DAS080 James and Hedge (1980) James, H.L., and Hedge, C.E., 1980, Age of basement rocks of southwest Montana: Geological Society of America Bulletin, part 1, v. 91, p. 11-15. DAS081 Karasevich and others (1981) Karasevich, LP., Garihan, J.M., Dahl, P.S., and Okuma, AF., 1981, Summary of Precambrian metamorphic and structural history, Ruby Range, southwest Montana, in Tucker, T.E., ed., Southwest Montana: Montana Geological Society Field Conference and Symposium Guidebook, p. 225-237. DAS082 Kilroy (1981) Kilroy, K.C., 1981, 40-Ar/39-Ar geochronology and structural relationships of some intermediate intrusions in the northern Beaverhead Mountains, Idaho-Montana: Geological Society of America Abstracts with Programs, v. 16, no. 4, p. 226. DAS083 Lewis (1990) Lewis, S.A., 1990, Geologic map of the Dickie Peak quadrangle, Montana: Montana Bureau of Mines and Geology Map GM 51, scale 1:24,000. DAS084 Lopez (1981) Lopez, D.A., 1981, Stratigraphy of the Yellowjacket Formation of eastcentral Idaho: Golden, Colorado School of Mines, Ph.D. thesis, 252 p. DAS085 Lopez (1982a) Lopez, D.A., 1982a, Constraints on the shape and position of the Yellowjacket (Proterozoic Y) depositional basin: Geological Society of America Abstracts with Programs, v. 14, no. 6, p. 320. DAS086 Lopez (1982b) Lopez, D.A., 1982b, Reconnaissance geologic map of the Gibbonsville quadrangle, Lemhi County, Idaho, and Beaverhead County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-1446, scale 1:24,000. DAS087 Marvin and others (1983) Marvin, R.F., Zen, E-an, Hammerstrom, Jane, and Mehnert, H.H., 1983, Cretaceous and Paleocene K-Ar mineral ages of the northern Pioneer batholith and nearby igneous rocks in southwest Montana: Isochron/West, v. 38, p. 11-16. DAS088 O'Neill (1983) O'Neill, J.M., 1983., Geologic map of the Middle Mountain-Tobacco Root Roadless Area, Madison County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-1590-A, scale 1:50,000. DAS089 Pearson and others (1988) Pearson, R.C., Berger, B.R., Kaufman, H.E., Hanna, W.F., and Zen, E-an, 1988, Mineral resources of the eastern Pioneer Mountains, Beaverhead County, Montana: U.S. Geological Survey Bulletin 1776, 34 p. DAS090 Pearson and others (1987) Pearson, R.C., Hassemer, J.H., Hanna, W.F., Hoover, D.B., Pierce, H.A., Schmauch, S.W., 1987, Mineral resources of the Farlin Creek Wilderness Study Aura, Beaverhead County, Montana: U.S. Geological Survey Bulletin 1724-C, 13 p. DAS091 Ruppel (1975) Ruppel, E.T., 1975, Precambrian and lower Ordovician rocks in eastcentral Idaho: U.S. Geological Survey Professional Paper 859, Chapter A, 23 p. DAS092 Ruppel (1985) Ruppel, E.T., 1985, The association of Middle Cambrian rocks and gold deposits in southwest Montana: U.S. Geological Survey Open-File Report 85-207, 26 p. DAS093 Ruppel and Lopez (1984) Ruppel, E.T., and Lopez, D.A., 1984, The thrust belt in southwest Montana and east-central Idaho: U.S. Geological Survey Professional Paper 1278, 41 p. DAS094 Ruppel and Lopez (1988) Ruppel, E.T., 1988, Regional geology and mineral deposits in and near the central part of the Lemhi Range, Lemhi County, Idaho: U.S. Geological Survey Professional Paper 1480, 122 p. DAS095 Saperstone and Ethridge (1984) Saperstone, H.I., and Ethridge, F.G., 1984, Origin and paleotectonic setting of the Pennsylvanian Quadrant Sandstone, southwestern Montana, in Goolsby, J., and others, eds., The Permian and Pennsylvanian geology of Wyoming: Wyoming Geological Association Guidebook, p. 309-331. DAS096 Schwartz (1983) Schwartz, R.K, 1983, Broken Early Cretaceous foreland basin in southwestern Montana-Sedimentation related to tectonism, in Powers, R.B., ed., Geologic studies of the Cordilleran thrust belt: Rocky Mountain Association of Geologists Field Conference and Symposium Guidebook, p. 159-184. DAS097 Smedes and others (1988) Smedes, H.W., Klepper, M.R., and Tilling, R.I., 1988, Preliminary map of plutonic units of the Boulder batholith, southwestern Montana: U.S. Geological Survey Open-File Report 88-0283, scale 1:200,000. DAS098 Snee (1982) Snee, L.W., 1982, Emplacement and cooling of the Pioneer batholith, southwest Montana: Columbus, Ohio State University, Ph.D. thesis, 320 p. DAS099 Staatz (1979) Staatz, M.H., 1979, Geology and mineral resources of the Lemhi Pass thorium district, Idaho and Montana: U.S. Geological Survey Professional Paper 1049-A, 90 p. DAS100 Streckeisen (1973) Streckeisen, AL, 1973, Plutonic rocks-Classification and nomenclature recommended by the IUGS subcommission on the systematics of igneous rocks: Geotimes, v. 18, no. 10, p. 26-30. DAS101 Tysdal and others (1987) Tysdal, R.G., Lee, G.K., Hassemer, J.H., and Hanna, W.F., 1987, Mineral resources of the Blacktail Mountains Wilderness Area, Beaverhead County, Montana: U.S. Geological Survey Bulletin 1724-B, 21 p. DAS102 Tysdal and others (1989) Tysdal, R.G., Dyman, T.S., and Nichols, D.J., 1989, Lower Cretaceous bentonitic strata in southwestern Montana assigned to Vaughn Member of Mowry Shale (east) and of the Blackleaf Formation (west): Mountain Geologist, v. 26, no. 2, p. 53-61. DAS103 Vitaliano and Cordua (1979) Vitaliano, C.J., and Cordua, W.S., 1979, Geologic map of the southern Tobacco Root Mountains, Madison County, Montana: Geological Society of America Map and Chart Series MC-31, scale 1:62,500. DAS104 Wardlaw and Pecora (1985) Wardlaw, B.R., and Pecora, W.C., 1985, New Mississippian-Pennsylvanian stratigraphic units in southwestern Montana and adjacent Idaho: U.S. Geological Survey Bulletin 1656-B, 9 p. DAS105 Winston (1990) Winston, D., 1990, personal communication DAS106 Wooden and others (1978) Wooden, J.L, Vitaliano, C.J., Koehler, S.W., and Ragland, P.C., 1978, The late Precambrian mafic dikes in the southern Tobacco Root Mountains, Montana-Geochemistry, Rb-Sr geochronology, and relationship to Belt tectonics: Canadian Journal of Earth Science, V. 15, p. 467-479. DataSourceID [DatSrcID] (ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPolys) Source(s) of data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP(2020) Values are unique within this database. Example of values: "DAS001" 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" Definition (GeoMaterialDict, Glossary) Plain-language definition. USGS NCGMP(2020) Example of values: "A plane or irregular surface between two types or ages of rock." DefinitionSourceID [DefSrcID] (Glossary) Source of definition; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP(2020) DAS001 Ruppel and others (1993) See DataSources_ID attribute information DAS002 USGS NCGMP(2020) See DataSources_ID attribute information DAS003 Neuendorf and others (2011) See DataSources_ID attribute information 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) Examples of values: "Poorly sorted bouldery gravel and sand deposited by glacial meltwater" or "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: "DAS001" and "DAS001 | DAS065 | DAS079"; see DataSources_ID attribute information. ExistenceConfidence [ExiConf] (ContactsAndFaults, GeologicLines) Confidence that feature exists. USGS NCGMP(2020) certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. USGS NCGMP(2020) unspecified Used for the boundary of a map where no confidence is specified. USGS NCGMP(2020) FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP(2020) Examples of values: "Alluvial and pediment gravels" or "Kibbey Sandstone of the Snowcrest Range Group (in map explanation only)" 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: "--Sedimentary rock" or "------Coarse-grained, felsic-composition intrusive igneous rock" 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) 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 values: "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: "08" or "09-01-01" IdentityConfidence [IdeConf] (ContactsAndFaults, GeologicLines, MapUnitPolys) 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) unspecified Used for the boundary of a map where no confidence is specified. USGS NCGMP(2020) IndentedName [IndNam] (GeoMaterialDict) Name with addition of leading spaces to help show rank within a hierarchical list. USGS NCGMP(2020) Examples of values: "------Mafic-composition lava flows" or "--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, GeologicLines, MapUnitPolys) 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: "*Mu" or "Trd" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, GeologicLines) Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. USGS NCGMP(2020) Real number. Value of -9 indicates value is unknown. MapUnit (DescriptionOfMapUnits, MapUnitPolys) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP(2020) Aa Amphibolite Ruppel and others (1993) Aas Aluminous schist Ruppel and others (1993) Ag Gneissic rocks Ruppel and others (1993) Aif Iron-formation Ruppel and others (1993) Am Marble Ruppel and others (1993) Aq Quartzite Ruppel and others (1993) Aqf Quartzofeldspathic gneiss Ruppel and others (1993) Asg Interlayered schist and gneiss Ruppel and others (1993) Cu Cambrian rocks, undivided Ruppel and others (1993) IPMu Snowcrest Range Group and Madison Group, undivided Ruppel and others (1993) Jm Morrison Formation Ruppel and others (1993) JTRu Jurassic and Triassic rocks Ruppel and others (1993) Kal Alaskite, aplite, and pegmatite and related felsic rocks Ruppel and others (1993) Kbgg Biotite granodiorite and granite Ruppel and others (1993) Kem Elkhorn Mountains Volcanics Ruppel and others (1993) Kfgt Foliated hornblende-biotite granodiorite and tonalite Ruppel and others (1993) Kfm Foliated meta-igneous rocks Ruppel and others (1993) Kfr Granite gneiss of Foolhen Ridge Ruppel and others (1993) Kgd Granodiorite Ruppel and others (1993) Kgtd Granodiorite, tonalite, and quartz diorite Ruppel and others (1993) Khbg Hornblende biotite gneiss Ruppel and others (1993) Khg Hornblende gabbro Ruppel and others (1993) Ki Granitic rocks, undivided Ruppel and others (1993) Kk Kootenai Formation Ruppel and others (1993) Km Sedimentary rocks of McCartney Mountain Ruppel and others (1993) Kmg Monzogranite Ruppel and others (1993) Ks Sedimentary rocks (upper and lower parts) and Blackleaf Formation, undivided Ruppel and others (1993) Kvu High-potassium dacite and minor andesite and dacite Ruppel and others (1993) MDu Three Forks Shale and Jefferson Formation, undivided Ruppel and others (1993) Oq Quartzite of Dickie Peak Ruppel and others (1993) PMq Quadrant Formation Ruppel and others (1993) PMu Permian to Mississippian rocks Ruppel and others (1993) Pp Phosphoria Formation Ruppel and others (1993) Qa Alluvium Ruppel and others (1993) Qf Alluvial-fan deposits Ruppel and others (1993) Ql Landslide deposits Ruppel and others (1993) Qm Till Ruppel and others (1993) Qo Glacial outwash Ruppel and others (1993) Qs Lacustrine sand and silt Ruppel and others (1993) QTg Alluvial and pediment gravels Ruppel and others (1993) Tbmg Biotite-muscovite granodiorite Ruppel and others (1993) Tbz Bozeman Group and related valley-fill deposits, undivided Ruppel and others (1993) Tc Challis Volcanics Ruppel and others (1993) Tgd Granodiorite Ruppel and others (1993) Ti Intrusive rocks Ruppel and others (1993) Tibd Intrusive basalt and diorite Ruppel and others (1993) TKb Beaverhead Group Ruppel and others (1993) TKg Biotite-muscovite granite Ruppel and others (1993) TKgd Hornblende-biotite granodiorite Ruppel and others (1993) Tq Monzogranite, granodiorite, quartz monzodiorite, and related intrusive granitic rocks Ruppel and others (1993) Trd Rhyodacite, dacite, andesite, and rhyolite Ruppel and others (1993) TRu Triassic rocks, undivided Ruppel and others (1993) Ts Basaltic rocks near Sweetwater Creek Ruppel and others (1993) Tsi Silicic dikes Ruppel and others (1993) Tvu Volcanic rocks Ruppel and others (1993) water water Ruppel and others (1993) X(A)b Biotite gneiss Ruppel and others (1993) X(A)g Garnetiferous gneiss and schist Ruppel and others (1993) X(A)m Mylonitic biotite gneiss Ruppel and others (1993) X(A)q Quartzofeldspathic gneiss Ruppel and others (1993) X(A)qf Quartz-feldspar-biotite gneiss Ruppel and others (1993) XAu Ultramafic rocks Ruppel and others (1993) Xg Granite, aplite, and pegmatite Ruppel and others (1993) Xga Gneiss and amphibolite Ruppel and others (1993) Xi Mylonitic orthogneiss ad granite sills Ruppel and others (1993) Xmb Mylonitic biotite gneiss Ruppel and others (1993) Ycg Conglomerate Ruppel and others (1993) Yd Diabase Ruppel and others (1993) Yg Porphyritic granite Ruppel and others (1993) Yhe Helena and Empire Formations Ruppel and others (1993) Yl Lemhi Group Ruppel and others (1993) Ym Missoula Group Ruppel and others (1993) Ymm Foliated metasedimentary rocks, probably part of the Bonner Quartzite and Mount Shields Formation Ruppel and others (1993) Ynl Newland and LaHood Formations Ruppel and others (1993) Yq Quartzite of Grace Lake Ruppel and others (1993) Ys Swauger Formation Ruppel and others (1993) Ysc Quartzite, siltite, and argillite of Swamp Creek Ruppel and others (1993) Ysg Quartzite of Queener Mountain and Greyson Shale Ruppel and others (1993) Ytm Quartzite of Table Mountain Ruppel and others (1993) Yy Yellow Jacket Formation Ruppel and others (1993) 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: "Swauger Formation" or "Porphyritic granite" Notes (DataSources, ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPolys) Additional information specific to a particular feature or table entry. USGS NCGMP(2020) Free text. Values of <Null> indicate no entry. 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 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) DMU3 Paragraph style for formatted description of a third-order map unit within Description of Map Units table. Such map units are subsidiary to (commonly subdivisions of) second-order map units. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, 0 pt 1st line indent, 3 pt space before. USGS NCGMP(2020) DMU4 Paragraph style for formatted description of a fourth-order map unit within Description of Map Units table. Such map units are subsidiary to (commonly subdivisions of) third-order map units. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, 0 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) Shape (ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPolys) An Esri default field that contains the geometry type (point, line, polygon). 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 3128.642875 17373875184.880005 square meters 0.0001 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 2.175498 913035.736126 meters 0.0001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP(2020) Examples of values: "Ruppel and others (1993)" or "Burger (1967)" Symbol (DescriptionOfMapUnits, ContactsAndFaults, GeologicLines, MapUnitPolys) 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) Examples of values: "01.01.01" or "Qa" Term (Glossary) Plain-language word for a concept. Values are unique within database as a whole. USGS NCGMP(2020) Examples of values: "High" or "contact" Type (ContactsAndFaults, GeologicLines) 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) anticline, plunging An anticline in which the hinge line is inclined to the horizontal. 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) 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 degrees, and in most cases close to 60 degrees. Neuendorf and others (2011) fault, reverse A fault on which the hanging wall has moved upward relative to the footwall. The dip of the fault is usually greater than 45 degrees. 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) iron formation A chemical sedimentary rock, typically thin-bedded and/or finely laminated, containing at least 15 percent iron of sedimentary origin, and commonly but not necessarily containing layers of chert. Various primary facies (usually not weathered) of iron formation are distinguished on the basis of whether the iron occurs as predominantly oxides, silicates, carbonate, or sulfide. It is usually of Precambrian age. In mining usage, the term refers to a low-grade sedimentary iron ore in which the iron mineral(s) is segregated in bands or sheets irregularly mingles with chert or fine-grained quartz. Neuendorf and others (2011) map boundary A line representing the boundary of the mapping area. Ruppel and others (1993) shear zone (a) A tabular zone of rock that has been brecciated by many parallel fractures; such an area is often mineralized by ore-forming solutions. (b) A parallel-sided zone of localized shearing displacement, which may be recognized by sigmoidal mineral-filled veins, locally well-developed cleavage or foliation, wholesale grain-size reduction or mylonitization, or some combination of these features (Ramsay and Graham, 1970). Neuendorf and others (2011) sills and dikes A tabular igneous intrusion that parallels or cuts across the bedding or foliation of the sedimentary or metamorphic country rock, respectively. 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) syncline, overturned A syncline that has been tilted beyond the perpendicular. Sequence of strata thus appears reversed. Neuendorf and others (2011) syncline, overturned, plunging An overturned syncline in which the hinge line is inclined to the horizontal. Neuendorf and others (2011) syncline, plunging A syncline in which the hinge line is inclined to the horizontal. Neuendorf and others (2011) water The outline of a body of water (lake) and/or stream. Ruppel and others (1993) 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" or "https://ngmdb.usgs.gov/Prodesc/proddesc_92493.htm" 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/P9E0IPJR None. No fees are applicable for obtaining the data set. 20240620 Micah A Hernandez U.S. Geological Survey, Rocky Mountain Region Geologist mailing address

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