Karen S. Morgan John D. Horton 20240105 vector digital data Denver, Colorado U.S. Geological Survey Additional information about Originator: Morgan, K.S. (Akima Systems Engineering), https://orcid.org/0000-0001-8681-6809, Horton, J.D. (USGS), https://orcid.org/0000-0003-2969-9073 Suggested citation: Morgan, K.S., and Horton, J.D., 2024, GIS data for reconnaissance geologic map of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho: U.S. Geological Survey data release, https://doi.org/10.5066/P9S1MI9L. https://doi.org/10.5066/P9S1MI9L George C. Simmons James L. Gualtieri Terry J. Close Francis E. Federspiel Andrew M. Leszcykowski 2007 publication U.S. Geological Survey Scientific Investigations Report SIR-2007-5046 Reston, Virginia U.S. Geological Survey Suggested citation: Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p., https://pubs.usgs.gov/sir/2007/5046/. https://pubs.usgs.gov/sir/2007/5046/ This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the reconnaissance geologic map of the Hells Canyon Study Area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho (Simmons and others, 2007). Attribute tables and geospatial features (points, lines and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map plates as published in U.S. Geological Survey (USGS) Scientific Investigations Report Map SIR 2007-5046 (Simmons and others, 2007). The database represents the geology for the 625,177-acre (2,530 square kilometers), geologically complex Hells Canyon Study Area in two plates, at a publication scale of 1:48,000. The study area includes (1) the Hells Canyon Wilderness; (2) parts of the Snake River, Rapid River, and West Fork Rapid River Wild and Scenic Rivers; (3) lands included in the second Roadless Area Review and Evaluation (RARE II); and (4) part of the Hells Canyon National Recreation Area. References: Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p., https://pubs.usgs.gov/sir/2007/5046/. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10. The purpose of this data release is to provide Geologic Map Schema (GeMS)-compliant data for the geologic map of reconnaissance geologic map of the Hells Canyon Study Area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho. Conversion and publication of the geologic map in modern GIS format (for example, as an ArcGIS geodatabase) is considered to be foundational and high-priority by the USGS Mineral Resources Program (MRP) to facilitate on-going research and other activities by the MRP pertaining to critical mineral deposits as well as to other geologic and geophysical mapping efforts, petrologic studies, and mineral resource assessments. Hells_Canyon_SIR2007-5046.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 (Hells_Canyon_SIR2007-5046.gdb) contains the following elements: --GeologicMap: feature dataset (subdirectory) containing the following feature classes (GIS layers): ----CartographicLines: line layer representing lines that have no real-world physical existence, such as cross-section lines. ----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. ----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 joints. ----OverlayPolys: polygon layer that delineates areas of underlying or overlying material commonly shown as a patterned overprint. --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. --RepurposedSymbols: table that lists standard FGDC geologic map symbols that have been repurposed. In this case, the generic fault type for normal faults where up/down designations (ball and bar) are not shown on the map. 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. 20240105 publication date Complete None planned -117.1266 -116.2393 46.0001 44.9975 USGS Thesaurus data services geospatial datasets geographic information systems geology geologic maps bedrock geologic units structural geology ISO 19115 Topic Category geoscientificInformation None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics and Geochemistry Science Center GGGSC National Geologic Map Database NGMDB Geologic Map Schema GeMS USGS Metadata Identifier USGS:63d30599d34e06fef15010d2 Geographic Names Information System (GNIS) Wallowa County Adams County Idaho County Common geographic areas Idaho ID Oregon OR None. Please see 'Distribution Info' for details. These data are intended for use at approximately 1:48,000-scale or smaller. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. John D. Horton U.S. Geological Survey, Rocky Mountain Region Physical Scientist mailing

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-1921 303-236-3200 jhorton@usgs.gov Work was done under contract to the U.S. Geological Survey by Akima Systems Engineering (Herndon, VA) with support from the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center (GGGSC), Mineral Resources Program (MRP) and the National Geologic Map Database (NGMDB). Microsoft Windows 10 Enterprise, Version 1909 (Build 18363); Esri ArcGIS Pro 3.4.3 Unique values in attribute fields were checked through frequency analyses. The unique values in each attribute field were reviewed and checked for spelling, consistency of terms, accuracy, adherence to established vocabularies, and completeness. Text terms and values entered by USGS authors were reviewed and verified. 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 extracted and digitized directly into the GeMS database structure. Attribute values were modified for consistency with GeMS terminology. Topology tests were conducted on polygon and line feature classes to ensure spatial integrity of the data. Point, line, and polygon features were digitized from the printed map (Simmons and others, 2007) and quality assured for completeness. Textual information from the original printed map 'Description of Map Units' section was transcribed into the DescriptionOfMapUnits table. The data set is considered complete for the information presented and as described in the abstract. Horizontal accuracy of point, line, and polygon features is dependent on the accuracy of the 1:48,000 scale source map. Map publication techniques employed in 2007 resulted in variable line quality and accuracy. Estimated accuracy of horizontal location, provided on a per-feature basis in the attribute field LocationConfidenceMeters in GeMS, was assigned a value of -9 indicating unknown. Vertical accuracy testing does not apply to this dataset. George C. Simmons James L. Gualtieri Terry J. Close Francis E. Federspiel Andrew M. Leszcykowski 2007 publication U.S. Geological Survey Scientific Investigations Report SIR-2007-5046 Reston, Virginia U.S. Geological Survey Suggested citation: Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p., https://pubs.usgs.gov/sir/2007/5046/. https://pubs.usgs.gov/sir/2007/5046/ 48000 Digital and/or Hardcopy 2007 publication date Simmons and others, 2007 Original map publication; Plate 1 North and South, Plate 2 North and South U.S. Geological Survey National Cooperative Geologic Mapping Program 2020 publication U.S. Geological Survey Techniques and Methods book 11, chapter B10 Reston, Virginia U.S. Geological Survey Suggested citation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://pubs.er.usgs.gov/publication/tm11B10. https://pubs.er.usgs.gov/publication/tm11B10 Digital and/or Hardcopy 2020 publication date USGS NCGMP, 2020 Database schema and some attribute definitions. Neuendorf, K.K.E. Mehl, J.P. Jackson, J.A. 2011 fifth publication Alexandria, Virginia American Geological Institute Suggested citation: Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., 2011, Glossary of Geology (5th ed.): Alexandria, Va., American Geological Institute, 779 p. Digital and/or Hardcopy 2011 publication date Neuendorf and others, 2011 Definitions of some attributes. Federal Geographic Data Committee 2006 publication Reston, Virginia 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. https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php Digital and/or Hardcopy 2006 publication date FGDC, 2006 Standardized geologic map symbolization used for symbolizing the map. The map plates were obtained from the National Geologic Map Database (https://ngmdb.usgs.gov/Prodesc/proddesc_81470.htm) and georeferenced by the USGS using evenly distributed control points. The data was digitized into an Esri file geodatabase using heads-up digitizing by staff at East View Geospatial (Minneapolis, MN). Simmons and others, 2007 2021 Akima Systems Engineering (Herndon, VA) imported the files, projected and further attributed, edited, and compared to the original map plates to check for digitizing and attributing errors. Corrections were made as needed. Attributes were populated to conform to the Geologic Map Schema (GeMS) standard for geologic map publications (USGS NCGMP, 2020). Definitions of these values are derived from the printed map (Hyden and others, 1968), USGS authors, GeMS (USGS NCGMP, 2020), and from the Glossary of Geology (Neuendorf and others, 2011). Map unit colors were matched to the original publication as best possible and are represented 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. 2022 Vector String 946 Entity point 539 G-polygon 429 Universal Transverse Mercator 11 0.9996 -117.0 0.0 500000.0 0.0 coordinate pair 0.6096 0.6096 metre D_North_American_1927 Clarke_1866 6378206.4 294.9786982138982 Attribute Fields The attribute fields contain attribute information associated with features or records in the data set. The translated shapefile field name is provided in 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 "Cretaceous and Jurassic" 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: "dense random small blue dots with scattered larger dots, lithologic pattern 602" 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: "255,255,100" 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: "CAF001" DataSourceID [DatSrcID] (CartographicLines, ContactsAndFaults, DataSourcePolys, GeologicLines, MapUnitPoints, MapUnitPolys, OverlayPolys) Source of data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. DataSourcePolys_ID [DSrcPol_ID] (DataSourcePolys) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DSP1" DataSources_ID [DatSrc_ID] (DataSources) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. DAS02 Neuendorf and others, 2011 Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., 2011, Glossary of Geology (5th ed.): Alexandria, Va., American Geological Institute, 779 p. DAS03 USGS NCGMP, 2020 U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p. Definition (GeoMaterialDict, Glossary) Plain-language definition. USGS NCGMP, 2020 Example of values: "Silt- and sand-sized sediment, deposited by wind." DefinitionSourceID [DefSrcID] (Glossary) Source of definition; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. DAS02 Neuendorf and others, 2011 Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., 2011, Glossary of Geology (5th ed.): Alexandria, Va., American Geological Institute, 779 p. DAS03 USGS NCGMP, 2020 U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p. Description [Descr] (DescriptionOfMapUnits) Free-format text description of map unit. Commonly structured according to one or more accepted traditions (for example, lithology, thickness, color, weathering and outcrop characteristics, distinguishing features, genesis, age constraints). USGS NCGMP, 2020 Example of values: "Mostly carbonaceous mudstone and interbedded siltstone; minor amounts of sandstone and conglomerate" DescriptionOfMapUnits_ID [DMapUns_ID] (DescriptionOfMapUnits) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "DMU01" DescriptionSourceID [DesSrcID] (DescriptionofMapUnits) Source of map unit description; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. 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 FgdcIdentifier [FgdIde] (RepurposedSymbols) Identifier for symbol from FGDC Digital Cartographic Standard for Geologic Map Symbolization. USGS NCGMP, 2020 02.01.01 Fault (generic; vertical, subvertical, or high-angle; or unknown or unspecified orientation or sense of slip) FGDC, 2006 FullName (DescriptionOfMapUnits) Name of map unit including identification of containing higher rank unit(s). USGS NCGMP, 2020 Example of values: "Columbia River Basalt Group, undivided" 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 Examples of values: "------Alluvial sediment" or "----Medium and high-grade regional metamorphic rock, of unspecified origin" GeoMaterialConfidence [GeoMatConf] (DescriptionOfMapUnits) Describes appropriateness of GeoMaterial term for describing the map unit. USGS NCGMP, 2020 High The term and definition adequately characterize the overall lithologic nature of rocks and sediments in the map unit. Regarding the subjective term "adequately characterize," we refer to context and objectives of this classification as described in the GeMS documentation. USGS NCGMP, 2020 Medium The term and definition generally characterize the overall lithology of the map unit, but there are one or more significant minor lithologies that are not adequately described by the selected term. USGS NCGMP, 2020 Glossary_ID [Glo_ID] (Glossary) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of value: "GLO01" HierarchyKey [HKey] (DescriptionOfMapUnits, GeoMaterialDict) String that records hierarchical structure. Has form nn-nn-nn, nnn-nnn, or similar. Numeric, left-padded with zeros, dash-delimited. Each HierarchyKey fragment of each row is the same length to allow text-based sorting of table entries. USGS NCGMP, 2020 Example of values: "01" IdentityConfidence [IdeConf] (ContactsAndFaults, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Confidence that feature is correctly identified. 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 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 Inclination [Inc] (OrientationPoints) Dip or plunge, measured in degrees down from horizontal. Values of -9 indicate value unknown. USGS NCGMP, 2020 -9 90 degrees (angular measure) IndentedName [IndNam] (GeoMaterialDict) Name with addition of leading spaces to help show rank within a hierarchical list. USGS NCGMP, 2020 Examples of values: "----Clastic sediment" or "----Fine-grained intrusive igneous rock" IsConcealed [IsCon] (ContactsAndFaults, GeologicLines) Flag for contacts and faults covered by overlying map unit. USGS NCGMP, 2020 N No USGS NCGMP, 2020 Label (CartographicLines, ContactsAndFaults, DescriptionOfMapUnits, 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: "Jch" or "J^d" LocationConfidenceMeters [LocConfM] (ContactsAndFaults, 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] (OrientationPoints) Source of location; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. MapUnit (DescriptionOfMapUnits, MapUnitPoints, MapUnitPolys, OrientationPoints) Short plain-text identifier of the map unit. Used to link to DescriptionOfMapUnits table (foreign key). USGS NCGMP, 2020 HCR Hells Canyon Reservoir Simmons and others, 2007 Jch Coon Hollow Formation Simmons and others, 2007 JTRd Diorite Simmons and others, 2007 JTRdg Diorite and gabbro; minor amounts of quartz diorite Simmons and others, 2007 JTRgd Granodiorite and quartz diorite Simmons and others, 2007 Kd Diorite Simmons and others, 2007 KJgd Granodiorite and quartz diorite Simmons and others, 2007 my Mylonite, protomylonite, or intensely sheared rock, chiefly of the Seven Devils Group Simmons and others, 2007 myd Mylonite Simmons and others, 2007 Pzsg Schist and gneiss Simmons and others, 2007 Qal Alluvial deposits Simmons and others, 2007 Qls Landslide deposits Simmons and others, 2007 Qm Morainal deposits Simmons and others, 2007 Qtg Terrace gravels Simmons and others, 2007 Tcb Columbia River Basalt Group, undivided Simmons and others, 2007 TRmb Martin Bridge Limestone Simmons and others, 2007 TRPls Limestone Simmons and others, 2007 TRPlt Limestone inclusions in granitic rock; tactite developed around and in limestone Simmons and others, 2007 TRPs Seven Devils Group, undivided Simmons and others, 2007 TRsk Kurry Creek Member of the Doyle Formation of the Seven Devils Group Simmons and others, 2007 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 Example of values: "Coon Hollow Formation" NewExplanation [NewExp] (RepurposedSymbols) Explanation of usage of symbol in this map portrayal USGS NCGMP, 2020 Example of values: " fault, normal (U/D not designated in source)". Notes (CartographicLines, ContactsAndFaults, DataSources, DataSourcePolys, GeologicLines, MapUnitPoints, MapUnitPolys, OrientationPoints, OverlayPolys) Additional information specific to a particular feature or table entry. USGS NCGMP, 2020 Example of values: "Labeled as JTRdg and JTRgd on the printed North map plate 2. Probably a mistake in labeling. Chose to use JTRdg to be consistent with adjacent polygons to the north, west and south." OBJECTID [OID] [FID] (all) Object identification: an Esri default field that contains an integer value to uniquely identify a row in an attribute table. Esri sequential integer values, CSV files may be auto populated with -1 OldExplanation [OldExp] (RepurposedSymbols) Explanatory text from FGDC standard for meaning of symbol USGS NCGMP, 2020 Example of values: "fault, generic". OrientationConfidenceDegrees [OriConDeg] (OrientationPoints) Estimated angular precision of combined azimuth AND inclination measurements, in degrees. USGS NCGMP, 2020 5 5 degrees USGS authors OrientationPoints_ID [OriPoi_ID] (OrientationPoints) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of values: "ORP001" OrientationSourceID [OriSrcID] (OrientationPoints) Source of orientation data; alpha-numeric value used to link to DataSources table (foreign key). USGS NCGMP, 2020 DAS01 Simmons and others, 2007 Simmons, G.C., Gualtieri, J.L., Close, T.J., Federspiel, F.E., and Leszcykowski, A.M., 2007, Mineral resources of the Hells Canyon study area, Wallowa County, Oregon, and Idaho and Adams Counties, Idaho, with a section on aeromagnetic and gravity surveys, by D.R. Mabey: U.S. Geological Survey Scientific Investigations Report 2007-5046, 62 p. 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 PlotAtScale [PlotAtSca] (MapUnitPoints, OrientationPoints) Scale at which an observation are plotted. Value is scale of the map. USGS NCGMP, 2020 Positive real number. Using original map scale of 1:48,000. RepurposedSymbols_ID [RepSym_ID] (RepurposedSymbols) Unique alpha-numeric value assigned to each feature (primary key). USGS NCGMP, 2020 Values are unique within this database. Example of value: "RPS1". Shape (CartographicLines, ContactsAndFaults, DataSourcePolys, 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 708.729844 5427653707.088135 square meters 0.000001 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 21.70413 679771.814076 meters 0.000001 Source (DataSources) Plain-text short description that identifies the data source. USGS NCGMP, 2020 Example of values: "Simmons and others, 2007" StationsID (OrientationPoints) Unique alpha-numeric value used to link to Stations point feature class (foreign key). Not used in this database. USGS NCGMP, 2020 All values NULL. Symbol (CartographicLines, ContactsAndFaults, DescriptionOfMapUnits, 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 Numbers correspond to FGDC symbolization or a MapUnit. These values also correspond to the supplied Style file. Example of values: "01.01.01" Term (Glossary) Plain-language word for a concept. Values are unique within database as a whole. USGS NCGMP, 2020 Values correspond to attributes primarily used in the Type fields. Examples of values: "anticline" or "bedding, horizontal" Type (CartographicLines, ContactsAndFaults, GeologicLines, OrientationPoints, OverlayPolys) Classifier that specifies what kind of geologic feature is represented by a database element: that a certain line within feature class ContactsAndFaults is a contact, fault, or water boundary. USGS NCGMP, 2020 anticline A fold, generally convex upward, whose core contains the stratigraphically older rocks. Neuendorf and others, 2011 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 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, approximate Approximate strike of beds showing direction of dip Simmons and others, 2007 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 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 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, normal (U/D not designated in source) A fault in which the hanging wall has moved downward relative to the footwall. The angle of the fault is usually 45-90 degrees, and in most cases close to 60 degrees. Up/down not designated in source, so no bar/ball symbolized. Simmons and others, 2007 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 Hells Canyon Reservoir boundary A line representing the approximate boundary of the Hells Canyon Reservoir. Simmons and others, 2007 hydrothermally altered Alteration of rocks or minerals by the reaction of hydrothermal water with pre-existing solid phases. Open-system chemical reactions resulting from partial to complete chemical equilibrium between the host rock and hydrothermal fluids of a mineral deposit. Neuendorf and others, 2011 joint A planar fracture, crack, or parting in a rock, without shear displacement; the surface is usually decorated with a plumose structure. Often occurs with parallel joints to form part of a joint set. Neuendorf and others, 2011 joint, vertical A joint that is oriented vertical (90 degrees). Neuendorf and others, 2011 lineation A general, nongeneric term for a locally linear structure or fabric in a rock, e.g. flow lines, scratches, striae, slickensides or slickenfibers on a single surface; linear arrangements of components in sediments; or axes of folds. Lineation in metamorphic rocks includes aligned rod-shaped and/or elongate minerals grains, crenulation fold axes, and the lines of intersection between bedding and cleavage or any two sets of oriented surfaces (O'Leary et al., 1976; El-Etr, 1976). Neuendorf and others, 2011 map neatline A line representing the extent of the printed map. Simmons and others, 2007 scratch boundary A line used to close labeled polygons where contacts were not mapped. Simmons and others, 2007 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 silicified of propylitized rock The result of low-pressure-temperature alteration around many ore bodies. Neuendorf and others, 2011 study area boundary A line representing the boundary of the study area. Simmons and others, 2007 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, plunging A syncline in which the hinge line is inclined to the horizontal. Neuendorf and others, 2011 vein A thin, sheetlike igneous intrusion into a crevice. Neuendorf and others, 2011 URL (DataSources) Uniform Resource Locator (URL) or Digital Object Identifier (DOI), identifies a document on the World Wide Web. USGS NCGMP, 2020 Example of values: "https://pubs.usgs.gov/sir/2007/5046/" 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). 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/P9S1MI9L None. No fees are applicable for obtaining the data set. 20240105 John D. Horton U.S. Geological Survey, Rocky Mountain Region Physical Scientist mailing

Mail Stop 973, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-1921 303-236-3200 jhorton@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998