Micah A. Hernandez David E. Boleneus Jeffrey L. Mauk Michael L. Zientek 20240705 vector digital data U.S. Geological Survey data release DOI: 10.5066/P9FIFJI5 Denver, Colorado U.S. Geological Survey Additional information about Originators: Hernandez, M.A., https://orcid.org/0000-0002-9656-0832; Mauk, J.L., https://orcid.org/0000-0002-6244-2774; Zientek, M.L., https://orcid.org/0000-0002-8522-9626 Suggested citation: Hernandez, M.A., Boleneus, D.E., Mauk, J.L., and Zientek, M.L., 2024, GIS data for geologic maps of Ravalli Group and other Mesoproterozoic Belt Supergroup strata based on mapping by ASARCO in northern Idaho and northwestern Montana: U.S. Geological Survey data release, https://doi.org/10.5066/P9FIFJI5. https://doi.org/10.5066/P9FIFJI5 David E. Boleneus Larry M. Applegate Nancy L. Joseph Theodore R. Brandt 2001 1.0 publication U.S. Geological Survey Open-File Reports OFR-01-438 Denver, Colorado U.S. Geological Survey Suggested citation: Boleneus, D.E., Applegate, L.M., Joseph, N.L., and Brandt, T.R., 2001, Raster Images of Geologic Maps of Middle Proterozoic Belt strata in parts of Benewah, Bonner, Kootenai and Shoshone Counties, Idaho and Lincoln, Mineral and Sanders Counties, Montana: U.S. Geological Survey Open-File Report OF-2001-438, scales 1:48,000 and 1:12,000, https://doi.org/10.3133/ofr2001438. https://doi.org/10.3133/ofr2001438 This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic maps of Ravalli Group and other Mesoproterozoic Belt Supergroup strata in northern Idaho and northwestern Montana (Boleneus and others, 2001). 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 the USGS Open-File Report 2001-438. The database represents the geology for the 2.7 million acre, geologically complex study area in eleven plates at a publication scale of 1:48,000, and two plates at a publication scale of 1:12,000. The maps cover primarily Sanders, Shoshone, Kootenai, and Lincoln Counties, but also include minor parts of Benewah and Bonner Counties. Geologic mapping was undertaken between 1979 and 1984 by ASARCO Inc. as part of their program to explore for sediment-hosted stratiform copper deposits in northern Idaho and western Montana. Geologic mapping was primarily focused on formations of the Ravalli Group, which resulted in large unmapped areas within the map boundary. In 2001 the maps were scanned, georeferenced, and published by USGS (Boleneus and others, 2001). References: Boleneus, D.E., Applegate, L.M., Joseph, N.L., and Brandt, T.R., 2001, Raster Images of Geologic Maps of Middle Proterozoic Belt strata in parts of Benewah, Bonner, Kootenai and Shoshone Counties, Idaho and Lincoln, Mineral and Sanders Counties, Montana: U.S. Geological Survey Open-File Report OF-2001-438, scales 1:48,000 and 1:12,000, https://doi.org/10.3133/ofr2001438. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10. The purpose of this data release is to provide Geologic Map Schema (GeMS)-compliant data for the geologic maps of Ravalli Group and other Mesoproterozoic Belt Supergroup strata in parts of Benewah, Bonner, Kootenai and Shoshone Counties, Idaho and Lincoln, Mineral, and Sanders Counties, Montana. Development and publication of modern GIS data for geologic maps is foundational and high-priority to the USGS Mineral Resources Program (MRP) to facilitate on-going research and other activities pertaining to critical mineral deposits as well as to other geologic and geophysical mapping efforts, petrologic studies, and mineral resource assessments. ASARCO.gdb geodatabase 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 (ASARCO.gdb) contains two feature datsets (subdirectories) representing the different map scales (GeologicMap for 1:48,000) and (GeologicMap_12k for 1:12,000) that contain the following elements: (The 1:12,000 feature dataset and feature class names are annotated with "_12k".) --GeologicMap: feature dataset (subdirectory) containing the following feature classes (GIS layers): ----CartographicLines: line layer representing locations of cross sections and measured stratigraphic sections. ----ContactsAndFaults: line layer representing locations of contacts and faults. ----DataSourcePolys: polygon layer representing the spatial extent of data sources and (or) references used within the map boundary. ----GenericPoints: point layer representing the location of drill holes. ----GeochemPoints: point layer representing locations of geochemistry samples. ----GeologicLines: line layer representing the locations of dikes, fold axes, and other linear features. ----MapUnitPoints: point layer representing the location where map units were identified outside the map boundary. ----MapUnitPolys: polygon layer representing the distribution of geologic map units. ----OrientationPoints: point layer representing structure measurements, such as bedding attitudes, foliation attitudes, and small folds. ----OverlayPolys: polygon layer that delineates areas of underlying or overlying material commonly shown as a patterned overprint and localized outcrops of 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. --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. 20240705 publication date Complete None planned -117.1486 -114.6812 48.8763 46.9785 ISO 19115 Topic Category geoscientificInformation USGS Thesaurus bedrock geologic units copper geochemistry geographic information systems geologic maps geology geospatial datasets lead Mesoproterozoic silver structural geology zinc None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics and Geochemistry Science Center GGGSC National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:654a73bbd34ee4b6e05c25d4 Geographic Names Information System (GNIS) Benewah County Bonner County Kootenai County Lincoln County Mineral County Sanders County Shoshone County Common geographic areas Idaho ID Montana MT None. Please see 'Distribution Info' for details. These data are intended for use at approximately 1:12,000 to 1:48,000-scale. 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. Jeffrey Mauk U.S. Geological Survey, ROCKY MOUNTAIN REGION Research Geologist mailing address

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-5605 303-236-3200 jmauk@usgs.gov Work was accomplished by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center (GGGSC) with support from the Mineral Resources Program (MRP) and the National Geologic Map Database (NGMDB). The authors would also like to thank Larry Applegate and Nancy Joseph (ASARCO Inc.) for providing the original maps and map unit descriptions that are published in U.S Geological Survey Open-File Report 2001-438. Microsoft Windows 10 Enterprise, Version 10 (Build 18363); Esri ArcGIS Pro 3.0.3 Unique values in attribute fields were checked through frequency analyses. The unique values in each attribute field were reviewed and checked for spelling, consistency of terms, accuracy, adherence to established vocabularies, and completeness. Text terms and values entered by USGS authors were reviewed and verified. Confidence that a feature exists and confidence that a feature is correctly identified are described in per-feature attributes ExistenceConfidence and IdentityConfidence. GIS layer and attribute information were digitized and extracted directly into the GeMS database structure. Attribute values were modified for consistency with GeMS terminology. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. Polygon, line, and point features were digitized from the Open-File Report 2001-438 map and quality assured for completeness. Textual information from the original printed map 'Description of Map Units' section was transcribed into the DescriptionOfMapUnits table. Horizontal accuracy of point, line, and polygon features is dependent on the accuracy of the 1:12,000 and 1:48,000 source maps. Map publication techniques employed in 2001 resulted in variable line quality and accuracy. Estimated accuracy of horizontal location, provided on a per-feature basis in the attribute field LocationConfidenceMeters in GeMS, was assigned a value of -9 indicating unknown. Vertical accuracy testing does not apply to this dataset. David E. Boleneus Larry M. Applegate Nancy L. Joseph Theodore R. Brandt 2001 1.0 publication U.S. Geological Survey Open-File Report OFR-2001-438 Menlo Park, California U.S. Geological Survey Suggested citation: Boleneus, D.E., Applegate, L.M., Joseph, N.L., and Brandt, T.R., 2001, Raster Images of Geologic Maps of Middle Proterozoic Belt strata in parts of Benewah, Bonner, Kootenai and Shoshone Counties, Idaho and Lincoln, Mineral and Sanders Counties, Montana: U.S. Geological Survey Open-File Report OF-2001-438, scales 1:48,000 and 1:12,000, https://doi.org/10.3133/ofr2001438. https://doi.org/10.3133/ofr2001438 48000 Digital and/or Hardcopy 2001 publication date Boleneus and others (2001) Original published geologic maps. David E. Boleneus Larry M. Applegate John H. Stewart Michael L. Zientek Mary H. Carlson Derrick W. Chase 2005 1.0 publication U.S. Geological Survey Scientific Investigations Report SIR-2005-5231 Menlo Park, California U.S. Geological Survey Suggested citation: Boleneus, D.E., Applegate, L.M., Stewart, J.H., Zientek, M.L., Carlson, M.H., and Chase, D.W., 2005, Stratabound copper-silver deposits of the Mesoproterozoic Revettt Formation, Montana and Idaho, with a section on databases and spatial-data files for the geology of the Revett Formation: U.S. Geological Survey Scientific Investigations Report SIR-2005-5231, https://doi.org/10.3133/sir20055231. https://doi.org/10.3133/sir20055231 Digital and/or Hardcopy 2005 publication date Boleneus and others (2005) Locations of drill holes and measured stratigraphic sections. Jack E. Harrison Earle R. Cressman James W. Whipple 1992 1.0 publication U.S. Geological Survey Miscellaneous Investigations Series Map I-2267 Denver, Colorado U.S. Geological Survey Suggested citation: Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 x 2 degree quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Investigations Series Map I-2267, scale 1:250,000, https://doi.org/10.3133/i2267. https://doi.org/10.3133/i2267 250000 Digital and/or Hardcopy 1992 publication date Harrison and others (1992) Unit descriptions for map units Cs, Kqm, Ks. Jack E. Harrison Allan B. Griggs John D. Wells 1986 1.0 publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1509 Denver, Colorado U.S. Geological Survey Suggested citation: Harrison, Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 x 2 degree quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-1509, scale 1:250,000, https://doi.org/10.3133/i1509a. https://doi.org/10.3133/i1509a 250000 Digital and/or Hardcopy 1986 publication date Harrison and others (1986) Unit description for map unit Ki and identification of map units Ysp and Ks. 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. 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. Federal Geographic Data Committee 2006 publication Reston, Virginia prepared for the Federal Geographic Data Committee by the U.S. Geological Survey 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 Digital and/or Hardcopy 2006 publication date FGDC (2006) Standardized geologic map symbolization used for symbolizing the map. Asarco Inc. geologists mapped the Belt Supergroup in northern Idaho and northwestern Montana from 1979 to 1984. Geologic data were compiled on 11 scale-stable topographic base maps at 1:48,000 scale, and 2 maps at 1:12,000 scale. 1984 Geologic features from the georeferenced map images in U.S. Geological Survey Open-File Report OF-2001-438 (Boleneus and others, 2001) were captured by heads-up digitizing into an Esri file geodatabase in GeMS format. Attributes were populated to conform to the Geologic Map Schema (GeMS) standard for geologic map publications (USGS NCGMP (2020). GeMS geodatabase feature classes and tables were populated with additional information as required. Definitions of these values are derived from the printed maps (Boleneus and others, 2001), GeMS (USGS NCGMP, 2020), USGS authors, and from the Glossary of Geology (Neuendorf and others, 2011). Data layers were re-projected to Albers Equal Area, North American Datum 1983, in units of meters. Locations for some drill holes and stratigraphic sections located within the study area were extracted from Boleneus and others (2005). Precambrian ages for many geologic units were changed to Mesoproterozoic based on newer geologic mapping from Harrison and others (1986, 1992). Some map unit designations and unit descriptions were modified using these newer maps and by the authors of this report. 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 represented in the Symbol attribute fields and are provided in the included Esri Style file. Map unit colors were matched to the original publication as best possible and are represented as RGB values in the AreaFillRGB field of the DescriptionOfMapUnits table. They are also provided in the custom Esri Style file. Hand pencil coloring on the original source maps indicate where geologic units were identified in the field and these extents were used when digitizing some map unit polygons. Where geologic units were partially mapped, the line Type of 'scratch boundary' in the ContactsAndFaults feature class was used to show the extent of mapping. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. Boleneus and others (2001) Boleneus and others (2005) FGDC (2006) USGS NCGMP (2020) Harrison and others (1986) Harrison and others (1992) Neuendorf and others (2011) 2022 Vector Entity point 4542 G-polygon 7752 Link 2812 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. Minimum and maximum values for numeric fields are reported for the combined values of the 1:12,000 and 1:48,000 datasets. USGS Authors Age (DescriptionOfMapUnits) Age of map unit as shown in Description of Map Units. USGS NCGMP (2020) Examples of values: "Cretaceous" or "Mesoproterozoic" AreaFillPatternDescription [PatDes] (DescriptionOFMapUnits) Text description (for example, "random small red dashes") provided as a convenience for users who must recreate symbolization. USGS NCGMP (2020) Example of values: "100% transparent" AreaFillRGB [RGB] (DescriptionOfMapUnits) {Red, Green, Blue} tuples that specify the suggested color (for example, "255,255,255", "124,005,255") of area fill for symbolizing MapUnit. Each color value is an integer between 0 and 255, values are zero-padded to a length of 3 digits, and values are separated by commas with no space: NNN,NNN,NNN. USGS NCGMP (2020) Example of values: "255,102,077 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) CartographicLines_ID [CarLin_ID] (CartographicLines) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "CAL1" ContactsAndFaults_ID [CAFs_ID] (ContactsAndFaults) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "CAF0001" DataSources_ID [DatSrc_ID] (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) DAS01 Boleneus and others (2001) Boleneus, D.E., Applegate, L.M., Joseph, N.L., and Brandt, T.R., 2001, Raster images of geologic maps of middle Proterozoic Belt strata in parts of Benewah, Bonner, Kootenai, and Shoshone Counties, Idaho and Lincoln, Mineral, and Sanders Counties, Montana: U.S. Geological Survey Open-File Report OF-2001-438, scales 1:48,000 and 1:12,000, https://doi.org/10.3133/ofr2001438 DAS02 Boleneus and others (2005) Boleneus, D.E., Applegate, L.M., Stewart, J.H., and Zientek, M.L., 2005, Stratabound copper-silver deposits of the Mesoproterozoic Revett Formation, Montana and Idaho, with a section on databases and spatial-data files for the geology and mineral deposits of the Revett Formation: U.S. Geological Survey Scientific Investigations Report SIR-2005-5231, https://doi.org/10.3133/sir20055231. DAS03 Harrison and others (1992) Harrison, J.E., Cressman, E.R., and Whipple, J.W., 1992, Geologic and structure maps of the Kalispell 1 degree x 2 degrees quadrangle, Montana, and Alberta and British Columbia: U.S. Geological Survey Miscellaneous Investigations Series Map I-2267, scale 1:250,000, https://doi.org/10.3133/i2267. DAS04 Harrison and others (1986) Harrison, J.E., Griggs, A.B., and Wells, J.D., 1986, Geologic and structure maps of the Wallace 1 degree x 2 degrees quadrangle, Montana and Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-1509-A, scale 1:250,000, https://doi.org/10.3133/i1509a. DAS05 This report Hernandez, M.A., Boleneus, D.E., Mauk, J.L., and Zientek, M.L., 2024, GIS data for geologic maps of Ravalli Group and others Mesoproterozoic Belt Supergroup strata based on mapping by ASARCO in northern Idaho and northwestern Montana: U.S. Geological Survey data release, https://doi.org/10.5066/P9FIFJI5. DAS06 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, 74p., https://doi.org/10.3133/tm11B10. DAS07 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. DAS08 Bush (1989) Bush, J.H., 1989, The Cambrian system of northern Idaho and northwestern Montana, in Chamberlain, V.E., Breckenridge, R.M., and Bonnichsen, B., editors, Guidebook to the geology of northern and western Idaho and surrounding area: Idaho Geological Survey Bulletin 28, p 103-121, https://www.idahogeology.org/pub/Bulletins/B-28.pdf. DAS09 Cressman (1985) Cressman, E.R., 1985, The Prichard Formation of the lower part of the Belt Supergroup (Middle Proterozoic), near Plains, Sanders County, Montana: U.S. Geological Survey Bulletin 1553, https://doir.org/10.3133/b1553. DAS10 Schalck (1989) Schalk, D.K., 1989, The geology and alteration of the Gem stocks, Shoshone County, Idaho, in Chamberlain, V.E., Breckenridge, R.M., and Bonnichsen, B., editors, Guidebook to the geology of northern and western Idaho and surrounding area: Idaho Geological Survey Bulletin 28, p. 125-135, https://www.idahogeology.org/pub/Bulletins/B-28.pdf. DataSourceID [DatSrcID] (CartographicLines, ContactsAndFaults, DataSourcePolys, GeochemPoints, GeologicLines, GenericPoints, MapUnitPoints, MapUnitPolys, OverlayPolys) Source of data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) DAS01 Boleneus and others (2001) See DataSources_ID attribute information. DAS02 Boleneus and others (2005) See DataSources_ID attribute information. 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: "DSP1" 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) DAS01 Boleneus and others (2001) See DataSources_ID attribute information. DAS03 Harrison and others (1992) See DataSources_ID attribute information. DAS06 USGS NCGMP (2020) See DataSources_ID attribute information. DAS07 Neuendorf and others (2011) See DataSources_ID attribute information. Description [Descr] (DescriptionOfMapUnits, ContactsAndFaults, GeologicLines, OverlayPolys) 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: "contact, approximate" or "syncline, plunging, approximate" DescriptionOfMapUnits_ID [MapUns_ID] (DescriptionOFMapUnits) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "DMU01" DescriptionSourceID [DesSrcID] (DescriptionOfMapUnits) Source(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: "DAS01" and "DAS03 | DAS10"; see DataSources_ID attribute information. ExistenceConfidence [ExiConf] (ContactsAndFaults, GeologicLines, MapUnitPoints) 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) FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP (2020) Examples of values: "Burke Formation" or "Middle member of the Revett Formation" GeochemPoints_ID [GeoPoi_ID] (GeochemPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "GCM001" 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: "GEL01" 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) Example of values: "----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) 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: "01" or "14-01" IdentityConfidence [IdeConf] (ContactsAndFaults, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Confidence that feature is correctly identified. USGS NCGMP (2020) certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. USGS NCGMP (2020) questionable Identity of a feature cannot be determined using relevant observations and scientific judgment; therefore, one cannot be reasonably confident in the credibility of this interpretation. For example, IdentityConfidence = questionable is appropriate when a geologist reasons "I can see some kind of planar feature that separates map units in this outcrop, but I cannot be certain if it is a contact or a fault." USGS NCGMP (2020) unspecified Used for the boundary of a map where no confidence is specified. USGS NCGMP (2020) Inclination [Inc] (OrientationPoints) Dip or plunge, measured in degrees down from horizontal. Value of -9 indicates value is unknown. USGS NCGMP (2020) -9 90 degrees (angular measure) IndentedName [IndNam] (GeoMaterialDict) Name with addition of leading spaces to help show rank within a hierarchical list. USGS NCGMP (2020) Examples of values: "--Metasedimentary rock" or "----Quartzite" IsConcealed [IsCon] (ContactsAndFaults, GeologicLines) Flag for contacts and faults covered by overlying map unit. USGS NCGMP (2020) N No USGS NCGMP (2020) Y Yes USGS NCGMP (2020) Label (DescriptionOfMapUnits, CartographicLines, ContactsAndFaults, GenericPoints, GeochemPoints, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). USGS NCGMP (2020) Examples of values: "Yb" or "Osburn Fault" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, GenericPoints, GeochemPoints, GeologicLines, MapUnitPoints, OrientationPoints) Estimated half-width in meters of positional uncertainty envelope; position is relative to other features in database. USGS NCGMP (2020) Positive real number. Value of -9 indicates value is unknown. LocationSourceID [LocSrcID] (GenericPoints, GeochemPoints, OrientationPoints) Source of location; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP (2020) DAS01 Boleneus and others (2001) See DataSources_ID attribute information. DAS02 Boleneus and others (2005) See DataSources_ID attribute information. MapUnit (DescriptionOfMapUnits, GenericPoints, GeochemPoints, MapUnitPoints, MapUnitPolys, OrientationPoints) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP (2020) Cs Sedimentary rocks Harrison and others (1992) Ki Intrusive rocks Harrison and others (1986) Kqm Quartz monzonite Harrison and others (1992) Ks Syenite Harrison and others (1992) MzZd Sills and dikes Boleneus and others (2001) unmapped unmapped Boleneus and others (2001) water water Boleneus and others (2001) Yb Burke Formation Boleneus and others (2001) Yl Libby Formation Boleneus and others (2001) Yms Mount Shields Formation Boleneus and others (2001) Yp Prichard Formation Boleneus and others (2001) Ypl Lower member of the Prichard Formation Boleneus and others (2001) Ypma Unit A of the middle member of the Prichard Formation Boleneus and others (2001) Ypmb Unit B of the middle member of the Prichard Formation Boleneus and others (2001) Ypmc Unit C of the middle member of the Prichard Formation Boleneus and others (2001) Ypu Upper member of the Prichard Formation Boleneus and others (2001) Ypua Unit A of the upper member of the Prichard Formation Boleneus and others (2001) Ypub Unit B of the upper member of the Prichard Formation Boleneus and others (2001) Ypuc Unit C of the upper member of the Prichard Formation Boleneus and others (2001) Yr Revett Formation Boleneus and others (2001) Yrl Lower member of the Revett Formation Boleneus and others (2001) Yrm Middle member of the Revett Formation Boleneus and others (2001) Yrsr St. Regis and Revett Formations, undivided Boleneus and others (2001) Yru Upper member of the Revett Formation Boleneus and others (2001) Ysh Shepard Formation Boleneus and others (2001) Ysn Snowslip Formation Boleneus and others (2001) Ysp Striped Peak Formation Harrison and others (1986) Ysr St. Regis Formation Boleneus and others (2001) Yw Wallace Formation Boleneus and others (2001) MapUnitPoints_ID [MUnPoi_ID] (MapUnitPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "MPT01" 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: "MUP001" 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: "Burke Formation" or "Upper member" Notes (DataSources, CartographicLines, ContactsAndFaults, DataSourcePolys, GenericPoints, GeochemPoints, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Additional information specific to a particular feature or table entry. USGS NCGMP (2020) Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. OBJECTID [OID] [FID] (all) Object identification: an ArcGIS 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. Example of values: "ORP0001" OrientationSourceID [OriSrcID] (OrientationPoints) Source of orientation data; alpha-numeric value used to link to DataSource table (foreign key). USGS NCGMP (2020) DAS01 Boleneus and others (2001) See DataSources_ID attribute information. OverlayPolys_ID [OvePol_ID] (OverlayPolys) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP (2020) Values are unique within this database. Example of values: "OVP001" 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) PlotAtScale [PlotAtSca] (GeochemPoints, GenericPoints, MapUnitPoints, OrientationPoints) Scale at which the observation should be plotted. Value is scale of the map. USGS NCGMP (2020) Positive real number. Using original map scales of 12000 and 48000. ppmAg (GeochemPoints) Measured concentration of silver. Negative values indicate determinations less than the detection limit of the analytical method. The absolute value of the negative number is the detection limit. USGS authors -0.1 40 ppm (parts per million) ppmCu (GeochemPoints) Measured concentration of copper. Negative values indicate determinations less than the detection limit of the analytical method. The absolute value of the negative number is the detection limit. USGS authors -1 51000 ppm (parts per million) ppmPb (GeochemPoints) Measured concentration of lead. Negative values indicate determinations less than the detection limit of the analytical method. The absolute value of the negative number is the detection limit. USGS authors -0.1 8000 ppm (parts per million) ppmZn (GeochemPoints) Measured concentration of zinc. USGS authors 10 97 ppm (parts per million) Shape (CartographicLines, ContactsAndFaults, DataSourcePolys, GenericPoints, GeochemPoints, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) An Esri default field that contains the geometry type (point, line, polygon). Esri Point Geometry type is a point. Esri Polygon Geometry type is a polygon. Esri Polyline Geometry type is a line. Esri Shape_Area (DataSourcePolys, MapUnitPolys, OverlayPolys) An Esri default field that contains the area of a polygon. The value is automatically generated in units of the feature class. Esri 71.277672 10980167292.347216 square meters 0.0001 Shape_Length [Shp_Len] (CartographicLines, ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPolys, OverlayPolys) An Esri default field that contains the length of a line or perimeter. The value is automatically generated in the units of the feature class. Esri 5.826311 1551941.208444 meters 0.0001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP (2020) Example of values: "Boleneus and others (2001)" StationsID (GenericPoints, GeochemPoints, 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. No values entered. Symbol (DescriptionOfMapUnits, CartographicLines, ContactsAndFaults, GenericPoints, GeochemPoints, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. USGS NCGMP (2020) Examples of values: "01.01.01" or "Yb" Term (Glossary) Plain-language word for a concept. Values are unique within database as a whole. USGS NCGMP (2020) Example of values: "contact" Type (CartographicLines, ContactsAndFaults, GenericPoints, GeochemPoints, GeologicLines, OrientationPoints, OverlayPolys) Classifier that specifies what kind of geologic feature is represented by a database element: that a certain line within feature class ContactsAndFaults is a contact, or thrust fault, or water boundary. USGS NCGMP (2020) anticline A fold, generally convex upward, whose core contains the stratigraphically older rocks. Neuendorf and others (2011) anticline, overturned A fold, generally convex upward, whose core contains the stratigraphically older rocks that has tilted beyond the perpendicular. Neuendorf and others (2011) anticline, overturned, plunging A fold, generally convex upward, whose core contains the stratigraphically older rocks that has tilted beyond the perpendicular and in which the hinge line is inclined to the horizontal. Neuendorf and others (2011) anticline, plunging A fold, generally convex upward, whose core contains the stratigraphically older rocks that has tilted beyond the perpendicular and in which the hinge line is inclined to the horizontal. 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) bedding, vertical Bedding inclined to the principal surface of deposition that has tilted vertical (90 degrees). Neuendorf and others (2011) cleavage The property or tendency of a rock to split along secondary, aligned fractures or other closely spaced, planar structures or textures, produced by deformation or metamorphism. Neuendorf and others (2011) contact A plane or irregular surface between two types or ages of rock. Neuendorf and others (2011) cross section Location of a diagram or drawing that shows features transected by a given plane. Neuendorf and others (2011) dike A tabular igneous intrusion that cuts across the bedding or foliation of the country rock. Neuendorf and others (2011) drill hole A circular hole made by drilling; especially one made by cable tools, or one made to explore for valuable minerals or to obtain geologic information. 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 dip The maximum angle that a fault plane makes with the horizontal; measured perpendicular to the strike of the structure and in the vertical plane. Neuendorf and others (2011) fault, normal A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is usually 45-90 degrees, and in most cases close to 60 degrees. Neuendorf and others (2011) fault, oblique-slip, left-lateral A fault on which the net slip has dip slip and strike slip components and the side opposite the observer has been displaced to the left. 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, strike-slip, left-lateral A fault on which the movement is parallel to the fault's strike and which the side opposite the observer has been displaced to the left. Neuendorf and others (2011) fault, strike-slip, right-lateral A fault on which the movement is parallel to the fault's strike and which the side opposite the observer has been displaced to the right. Neuendorf and others (2011) fault, thrust A fault with a dip of 45 degrees or less over much of its extent, on which the hanging wall has moved upward relative to the footwall. Neuendorf and others (2011) 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) foliation, vertical Foliation that has tilted vertical (90 degrees). Neuendorf and others (2011) map boundary A line representing the boundary of the mapping area. Boleneus and others (2001) orebody A continuous, well-defined mass of material of sufficient ore content to make extraction economically feasible. Neuendorf and others (2011) Purcell sill Map unit Ypr from the geologic map of the Kalispell 1 x 2 degree quadrangle portrayed as a line in certain areas. Harrison and others (1992) scratch boundary An approximate line drawn to close polygons where no contact was drawn on the scanned maps. Also used to approximate the hand pencil colored areas shown on the maps which represents 'verified in the field' according to the original source DAS01 (Boleneus and others, 2001). USGS authors silt A rock fragment or detrital particle smaller than a very fine sand grain and larger than coarse clay, having a diameter in the range of 1/256 to 1/16 millimeters (4-62 microns, or 0.00016-0.0025 inches, or 8 to 4 phi units; the upper size limit is approximately the smallest size that can be distinguished with the unaided eye), being somewhat rounded by abraison in the course of transport. Neuendorf and others (2011) soil A term used in soil classification for the collection of natural bodies on the Earth's surface, in places modified or made by man of earthy materials, containing living matter, and supporting or capable of supporting plants out-of-doors. The lower limit is normally the lower limit of biologic activity , which generally coincides with the common rooting of native perennial plants. Neuendorf and others (2011) stratigraphic section A composite diagram that shows in a single column the sequence of stratigraphic units of a given locality or region (the oldest at the bottom and the youngest at the top, with dips adjusted to the horizontal) so arranged as to indicate their relations to the subdivisions of geologic time and their relative positions to each other. Neuendorf and others (2011) stream sediment A general term for clay, silt, sand, gravel, or similar unconsolidated detrital material deposited during comparatively recent geologic time by a stream or other body of running water as a sorted or semisorted sediment in the bed of the stream or on its flood plain or delta, or as a cone or fan at the base of a mountain slope. 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) talus Rock fragments of any size or shape (usually coarse and angular) derived from and lying at the base of a cliff or very steep, rocky slope. Also, the outward sloping and accumulated heap or mass of such loose broken rock, considered as a unit, and formed chiefly by gravitational falling, rolling, or sliding. Neuendorf and others (2011) vein A thin, sheetlike igneous intrusion into a crevice. Neuendorf and others (2011) water The outline of a body of water (lake) and/or stream. Boleneus and others (2001) URL (DataSources) Uniform Resource Locator (URL) or Digital Object Identifier (DOI), identifies a document on the World Wide Web. USGS NCGMP (2020) Example of values: "https://doi.org/10.3133/ofr2001438" 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 layer. 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/P9FIFJI5 None. No fees are applicable for obtaining the data set. 20240705 Jeffrey L Mauk U.S. Geological Survey, ROCKY MOUNTAIN REGION Research Geologist mailing address

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-5605 303-236-3200 jmauk@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998