Identification_Information: Citation: Citation_Information: Originator: Bundtzen, T.K. Originator: Harris, E.E. Originator: Miller, M.L. Originator: Layer, P.W. Originator: Laird, G.M. Publication_Date: 1999 Title: Geology of the Sleetmute C-7, C-8, D-7, and D-8 quadrangles, Horn Mountains, southwestern Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 98-12 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 38 p., 3 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2588 Description: Abstract: Geology of the Sleetmute C-7, C-8, D-7, and D-8 quadrangles, Horn Mountains, southwestern Alaska, Report of Investigation 98-12, presents a geologic map of the Horn Mountains area in southwestern Alaska. Between the 1990, 1991, and 1992 field seasons, DGGS geologists mapped four 1:63,360-scale quadrangles in the lower Kuskokwim River basin in southwest Alaska. The mapped formations span from the Late Cretaceous to the Holocene. Central to the stratigraphy is the Kuskokwim Group, a ~2,300-meter-thick sequence of marine turbidites and fluvial deposits formed in a post-accretionary basin, containing Turonian to Santonian fossil assemblages. This group is intruded and overlain by meta-aluminous to peraluminous igneous rocks, including the Iditarod Volcanics, the Horn Mountains volcanic-plutonic complex, and granite porphyry dikes and sills--features likely associated with a north-verging subduction zone and related extensional tectonics. Unconsolidated deposits from the Late Tertiary to Holocene cover approximately 65% of the area, with four Pleistocene glaciations producing a radial pattern of outwash deposits surrounding the glacially sculpted Horn Mountains. Thermoluminescence and radiocarbon dating indicate glaciations during the Illinoian (~140,000 years BP) and Late Wisconsin (~13,600 years BP) periods. Bedrock units exhibit multiple folding and faulting events, which may have facilitated hydrothermal mineralization. The region hosts notable mineral resources, including mesothermal, boron-enriched base and precious metals in hornfels and cupolas; mercury-antimony-gold lodes in granite porphyry and altered mafic dikes; and heavy mineral gold placers. The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/2588. Purpose: The purpose of this research was to investigate the mineralization within the lower Kuskokwim River basin in southwest Alaska. The study aimed to assess the geologic context, resource potential, and development history of these deposits. Additional objectives included evaluating local sand, gravel, and riprap resources for potential use in regional infrastructure projects. Supplemental_Information: This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Macpherson, A.E., Athey, J.E., Wyatt, W.C., Montayne, Simone, Buchanan, Wes, Rivera, P.G., and Steinleitner, A.M., 2024, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170 v. 2, 13 p. https://doi.org/10.14509/31172. The distribution package includes ESRI fonts and style files, along with usage instructions. Further documentation of the symbology is provided by Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 169, 7 p. https://doi.org/10.14509/30584 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 2026 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -159.000608 East_Bounding_Coordinate: -158.238211 North_Bounding_Coordinate: 62.001957 South_Bounding_Coordinate: 61.498153 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Alteration Products Theme_Keyword: Antimony Theme_Keyword: Ar-Ar Theme_Keyword: Arsenic Theme_Keyword: Basins Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geology Theme_Keyword: Bibliography Theme_Keyword: Bismuth Theme_Keyword: C14 Theme_Keyword: CIPW Norms Theme_Keyword: Clastics Theme_Keyword: Coal Theme_Keyword: Construction Materials Theme_Keyword: Copper Theme_Keyword: Depositional Environment Theme_Keyword: Diagenesis Theme_Keyword: Drift Mine Theme_Keyword: Economic Geology Theme_Keyword: Eolian Theme_Keyword: Epithermal Theme_Keyword: Faults Theme_Keyword: Fluvial Theme_Keyword: Folding Theme_Keyword: Formations Theme_Keyword: Fossils Theme_Keyword: GeMS DB L3 Compliant Theme_Keyword: GeMS DB v2 Theme_Keyword: Generalized Theme_Keyword: Geochemical Surveys Theme_Keyword: Geochemistry Theme_Keyword: Geochronology Theme_Keyword: Geologic Theme_Keyword: Geologic Map Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Glacial Theme_Keyword: Glacial Drift Theme_Keyword: Glacial Processes Theme_Keyword: Gold Theme_Keyword: Greisen Theme_Keyword: Historic Resources Theme_Keyword: Hornfels Theme_Keyword: Igneous Rocks Theme_Keyword: Isotopes Theme_Keyword: K-Ar Theme_Keyword: Lead Theme_Keyword: Lode Theme_Keyword: Major Oxides Theme_Keyword: Marine Theme_Keyword: Marine Transgressions Theme_Keyword: Measured Stratigraphic Section Theme_Keyword: Mercury Theme_Keyword: Mineralogy Theme_Keyword: Mining Theme_Keyword: Mining Methods Theme_Keyword: Non-Metals Theme_Keyword: Ores Theme_Keyword: Paleocurrent Theme_Keyword: Paleontology Theme_Keyword: Pan Concentrates Theme_Keyword: Peat Theme_Keyword: Permafrost and Periglacial Theme_Keyword: Petrogenesis Theme_Keyword: Petrography Theme_Keyword: Petrology Theme_Keyword: Placer Theme_Keyword: Plutonic Hosted Theme_Keyword: Polymetallic Vein Theme_Keyword: Porphyry Theme_Keyword: Precious Metals Theme_Keyword: Production Data Theme_Keyword: Resource Assessment Theme_Keyword: Rock Glaciers Theme_Keyword: Sample Location Theme_Keyword: Sand and Gravel Theme_Keyword: Sandstone Theme_Keyword: Sedimentation Theme_Keyword: Shale Theme_Keyword: Silver Theme_Keyword: Structure Theme_Keyword: Subduction Theme_Keyword: Surficial Theme_Keyword: Tectonics Theme_Keyword: Tellurium Theme_Keyword: Terranes Theme_Keyword: Tin Theme_Keyword: Trace Metals Theme_Keyword: Tungsten Theme_Keyword: Turbidites Theme_Keyword: Vein Deposit Theme_Keyword: Volcanic Theme_Keyword: Volcanic Hosted Theme_Keyword: Volcanology Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Aghaluk Creek Place_Keyword: Aniak Mining District Place_Keyword: Bear Creek Place_Keyword: Beaver Mountains Place_Keyword: Chuilnuk Mountains Place_Keyword: Crevice Creek Place_Keyword: Crooked Creek Place_Keyword: Eagle Creek Place_Keyword: Getmuna Creek Place_Keyword: Gibralter Point Place_Keyword: Holokuk River Place_Keyword: Holokuk River Valley Place_Keyword: Horn Mountains Place_Keyword: Horn Mountains Volcanic Caldera Place_Keyword: Horn Mountains Volcanic Field Place_Keyword: Iditarod Mining District Place_Keyword: Iditarod River Place_Keyword: Jungjuk Creek Place_Keyword: Juninggulra Mountain Place_Keyword: Kiokluk Mountains Place_Keyword: Kolmakof Place_Keyword: Kolmakof Lake Place_Keyword: Kolmakof River Place_Keyword: Kolmakof River Valley Place_Keyword: Kuskokwim Basin Place_Keyword: Kuskokwim Mountains Place_Keyword: Kuskokwim River Place_Keyword: Kuskokwim River Valley Place_Keyword: Little Creek Place_Keyword: Montana Creek Place_Keyword: Murray Gulch Place_Keyword: Napaimiut Place_Keyword: New York Creek Place_Keyword: Quinn Creek Place_Keyword: Rainy Creek Place_Keyword: Russian Mountains Place_Keyword: Small Creek Place_Keyword: Sue Creek Place_Keyword: Suter Creek Place_Keyword: Veahna Creek Place_Keyword: Victoria Creek Place_Keyword: Village Creek Place_Keyword: Whitewing Valley Stratum: Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Stratum_Keyword: Aniak-Thompson Fault Stratum_Keyword: Getmuna Rhyolite Group Stratum_Keyword: Iditarod Volcanics Stratum_Keyword: Iditarod-Nixon Fork Fault Stratum_Keyword: Kuskokwim Group Temporal: Temporal_Keyword_Thesaurus: Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America Temporal_Keyword: Cretaceous Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Access_Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Data_Set_Credit: Kinney Engineering, LLC staff used scanned and georeferenced paper maps to digitize geologic features into an AK GeMS database. Chris Wyatt conducted quality control of this digitizing work and completed the creation of the AK GeMS database. Ally M. Steinleitner conducted final database quality control and packaging. This geologic map (or report or conversion or product, etc.) was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G23AC00584, 2023, and the State of Alaska General Fund. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Laird, G.M. Originator: Harris, E.E. Originator: Kline, J.T. Originator: Miller, M.L. Publication_Date: 1993 Title: Geologic map of the Sleetmute C-7, D-7, C-8, and D-8 quadrangles, Horn Mountains area, southwest Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 93-47 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 15 p., 2 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/1606 Cross_Reference: Citation_Information: Originator: Burns, L.E. Originator: Graham, G.R.C. Originator: Barefoot, J.D. Originator: Fugro Airborne Surveys Originator: Stevens Exploration Management Corp. Publication_Date: 2019 Title: Sleetmute electromagnetic and magnetic airborne geophysical survey data compilation Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2019-16 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 13 p Online_Linkage: https://doi.org/10.14509/30223 Cross_Reference: Citation_Information: Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Coonrad, W.L. Publication_Date: 1984 Title: Compilation of geologic data from the Sleetmute A-5 Quadrangle, southwestern Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-29 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2388 Cross_Reference: Citation_Information: Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Coonrad, W.L. Publication_Date: 1984 Title: Compilation of geologic data from the Sleetmute B-5 Quadrangle, southwestern Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 84-44 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 7 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/1074 Cross_Reference: Citation_Information: Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Coonrad, W.L. Publication_Date: 1985 Title: Compilation of geologic data from the Sleetmute A-7 Quadrangle, southwestern Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 85-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2391 Cross_Reference: Citation_Information: Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Robinson, M.S. Originator: Waythomas, C.F. Originator: Clough, J.G. Publication_Date: 1995 Title: Geology of the Sleetmute A-5, A-6, B-5, and B-6 quadrangles, southwestern Alaska Series_Information: Series_Name: Professional Report Issue_Identification: PR 99 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 16 p., 2 sheets Online_Linkage: https://doi.org/10.14509/2280 Cross_Reference: Citation_Information: Originator: Decker, J.E. Originator: Robinson, M.S. Originator: Murphy, J.M. Originator: Reifenstuhl, R.R. Originator: Albanese, M.D. Publication_Date: 1984 Title: Geologic map of the Sleetmute A-6 Quadrangle, Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-8 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2367 Cross_Reference: Citation_Information: Originator: Krause, K.J. Publication_Date: 1984 Title: Photointerpretive map of morphological flood-plain deposits and materials resources, middle Kuskokwim River from Sleetmute to Kalskag Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 4 p., 5 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2361 Cross_Reference: Citation_Information: Originator: Murphy, J.M. Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Coonrad, W.L. Publication_Date: 1984 Title: Compilation of geologic data from the Sleetmute B-6 Quadrangle, southwestern Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 84-45 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 9 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/1075 Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Campbell, K.M. Originator: Stevens, D.S.P. Originator: Smith, R.L. Publication_Date: 2003 Title: Survey of geology, geologic materials, and geologic hazards in proposed access corridors in the Sleetmute Quadrangle, Alaska Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 109 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 4 sheets, scale 1:250,000 Online_Linkage: https://doi.org/10.14509/3294 Cross_Reference: Citation_Information: Originator: Reifenstuhl, R.R. Originator: Decker, J.E. Originator: Murphy, J.M. Originator: Coonrad, W.L. Publication_Date: 1984 Title: Compilation of geologic data from the Sleetmute A-6 Quadrangle, southwestern Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 84-43 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/1073 Cross_Reference: Citation_Information: Originator: Reifenstuhl, R.R. Originator: Robinson, M.S. Originator: Smith, T.E. Originator: Albanese, M.D. Originator: Allegro, G.L. Publication_Date: 1984 Title: Geologic map of the Sleetmute B-6 Quadrangle, Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-12 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2371 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Publication_Date: 1984 Title: Rock, pan-concentrate, and stream-sediment geochemistry, Sleetmute B-6 Quadrangle Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-11 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2370 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Publication_Date: 1984 Title: Rock, pan-concentrate, and stream-sediment geochemistry, Sleetmute A-6 Quadrangle Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-7 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2366 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Publication_Date: 1984 Title: Rock, pan concentrate, and stream-sediment geochemistry, Sleetmute B-5 Quadrangle Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-9 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2368 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Publication_Date: 1986 Title: Basic statistical analysis of geochemical results for rock, pan-concentrate, and stream-sediment samples from the Sleetmute A-5, A-6, B-5, and B-6 quadrangles, southwest Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 86-6 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 81 p Online_Linkage: https://doi.org/10.14509/1181 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Originator: Decker, J.E. Publication_Date: 1986 Title: Preliminary age dates and analytical data for selected igneous rocks from the Sleetmute, Russian Mission, Taylor Mountains, and Bethel quadrangles, southwestern Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 86-99 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 8 p Online_Linkage: https://doi.org/10.14509/1300 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Originator: Decker, J.E. Originator: Reifenstuhl, R.R. Originator: Murphy, J.M. Originator: Box, S.E. Publication_Date: 1984 Title: Geologic map of the Sleetmute B-5 Quadrangle, Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 84-10 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:40,000 Online_Linkage: https://doi.org/10.14509/2369 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Originator: Nye, C.J. Originator: Decker, J.E. Publication_Date: 1986 Title: Preliminary whole rock major oxide and trace element geochemistry of selected igneous rocks from the Sleetmute, Russian Mission, and Taylor Mountains quadrangles, southwestern Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 86-98 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 8 p Online_Linkage: https://doi.org/10.14509/1299 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute fields within each feature class are populated using the map symbology and corresponding applicable values from the GeMS and AK GeMS specifications. When known, certainty in attribute interpretation is indicated in the relevant fields. Attribute accuracy varies throughout the map and is scale-dependent. Logical_Consistency_Report: All polygon features were topologically validated according to the AK GeMS geologic mapping schema specifications. Completeness_Report: This publication is part of a DGGS Report of Investigations (RI). An RI is the completed product of original research and analysis, and RIs use professional cartography and undergo rigorous peer review, editing, and revision. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Certainty in feature boundaries or location varies throughout the map. Data fields within each feature class and the accompanying orientation and location confidence lookup tables record the authors' degree of confidence in the location of applicable features. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Hendricks, M.D. Originator: Macpherson, A.E. Originator: Athey, J.E. Originator: Wyatt, W.C. Originator: Montayne, Simone Originator: Buchanan, Wes Originator: Rivera, P.G. Originator: Steinleitner, A.M. Publication_Date: 2024 Title: AK GeMS data dictionary: A description of the Alaska geologic mapping schema Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 170 v. 2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 13 p Online_Linkage: https://doi.org/10.14509/31172 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2024 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Hendricks, M.D. and others, 2024 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Macpherson, A.E. Originator: Hendricks, M.D. Originator: Athey, J.E. Publication_Date: 2024 Title: AK GeMS Symbology: A description of the AK GeMS Style File Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 169 v. 2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 6 p Online_Linkage: https://doi.org/10.14509/31101 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2024 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Macpherson, A.E. and others, 2024 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey National Cooperative Geologic Mapping Program Publication_Date: 2020 Title: GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps Series_Information: Series_Name: Techniques and Methods Issue_Identification: TM 11-B10 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 1 p Online_Linkage: https://dggs.alaska.gov/pubs/id/30585 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2020 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Source_Contribution: GIS analysis and digital cartography Process_Step: Process_Description: Geologic mapping - Between the 1990, 1991, and 1992 field seasons, DGGS geologists conducted detailed mapping of four 1:63,360-scale quadrangles in the lower Kuskokwim River basin of southwest Alaska. The mapped geologic formations range in age from the Late Cretaceous to the Holocene. To support unit interpretations, the team collected a diverse array of data, including paleocurrent measurements, major oxide and trace-element analyses of igneous rocks, isotopic age determinations using Ar/Ar and K/Ar methods on selected samples, radiocarbon (C14) dating of organic material from Holocene deposits, and geochemical analyses of samples from mineralized zones. Process_Date: 1992 Process_Step: Process_Description: GIS analysis and digital cartography - This data distribution package's geologic and geographic features were organized and attributed according to the AK GeMS geologic mapping schema. The data were programmatically transformed to provide download options in three formats: (1) an AK GeMS data package that includes the complete AK GeMS database and associated files, (2) a GeMS data package that is a conversion of the AK GeMS database into the base GeMS standard published by the USGS, and (3) a shapefile data package that includes two simple shapefile representations of the data. Source_Used_Citation_Abbreviation: Hendricks, M.D. and others, 2024 Source_Used_Citation_Abbreviation: Macpherson, A.E. and others, 2024 Source_Used_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Process_Date: 2026 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 4 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -159 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: NAD27 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.9786982 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: sleetmute_c7_c8_d7_d8_quads_geo_ak_gems_db Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: sleetmute_c7_c8_d7_d8_quads_geo_ak_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: sleetmute_c7_c8_d7_d8_quads_geo_gems_db Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: sleetmute_c7_c8_d7_d8_quads_geo_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: sleetmute_c7_c8_d7_d8_quads_geo_geo_gems_geopackage Entity_Type_Definition: SQLite Database file Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: sleetmute_c7_c8_d7_d8_quads_geo_geo_gems_geopackage Detailed_Description: Entity_Type: Entity_Type_Label: sleetmute_c7_c8_d7_d8_quads_geo_gems_shapefile Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: sleetmute_c7_c8_d7_d8_quads_geo_gems_shapefile Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: RI 98-12 Distribution_Liability: The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: geodatabase Format_Information_Content: geologic map Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/2588 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20251002 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions