Identification_Information: Citation: Citation_Information: Originator: Bundtzen, T.K. Originator: Miller, M.L. Originator: Laird, G.M. Originator: Bull, K.F. Publication_Date: 1992 Title: Geology and mineral resources of Iditarod mining district, Iditarod B-4 and eastern B-5 quadrangles, southwestern Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Professional Report Issue_Identification: PR 97 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 88 p., 3 sheets Online_Linkage: https://doi.org/10.14509/2278 Description: Abstract: Geology and mineral resources of Iditarod mining district, Iditarod B-4 and eastern B-5 quadrangles, southwestern Alaska, Professional Report 97, provides 1:63,360-scale geologic mapping of parts of Iditarod and Innoko mining districts in Kuskokwim Mountains uplands. Researchers identified eighteen mappable rock units ranging in age from Mississippian(?) to early Tertiary are exposed in the study area. All rock units were also studied in the laboratory using standard thin section (transmitted light) petrographic techniques, fossil identifications, multi-element and major oxide geochemical analyses, microprobe analyses of mainly ores, and 40K-40Ar radiometric dating of igneous rocks. The publication also includes detailed geologic, structural, stratigraphic, and geochronologic data. This work was part of a series of reports on the geology, geochemistry, and mineral resources of the Iditarod quadrangle, Alaska. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2278. Purpose: The investigation of gold and other mineral occurrences in conjunction with comprehensive geologic mapping provides a scientific basis for continued mineral exploration throughout the project area. Supplemental_Information: This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170, 10 p. https://doi.org/10.14509/30669. 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: 1982 Ending_Date: 2024 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -158.256769 East_Bounding_Coordinate: -157.487712 North_Bounding_Coordinate: 62.506020 South_Bounding_Coordinate: 62.243835 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Age Dates Theme_Keyword: Alluvial Deposits Theme_Keyword: Alluvial Fan Theme_Keyword: Antimony Theme_Keyword: Arsenic Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geology Theme_Keyword: Breccia Theme_Keyword: CIPW Norms Theme_Keyword: Chert Theme_Keyword: Coal Theme_Keyword: Colluvial Deposits Theme_Keyword: Conglomerate Theme_Keyword: Derivative Theme_Keyword: Dike Theme_Keyword: Economic Geology Theme_Keyword: Fluid Inclusion Theme_Keyword: Gabbro Theme_Keyword: GeMS DB L3 Compliant Theme_Keyword: GeMS DB v1pt1 Theme_Keyword: Generalized Theme_Keyword: Geochemistry Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Gold Theme_Keyword: Historic Resources Theme_Keyword: Hornfels Theme_Keyword: Igneous Rocks Theme_Keyword: Inoceramus Theme_Keyword: Landslide Deposit Theme_Keyword: Major Oxides Theme_Keyword: Mercury Theme_Keyword: Metamorphic Rocks Theme_Keyword: Mining Theme_Keyword: Niobium Theme_Keyword: Non-Metals Theme_Keyword: Nuggets Theme_Keyword: Paleocurrent Theme_Keyword: Petrography Theme_Keyword: Placer Theme_Keyword: Placer Gold Theme_Keyword: Plant Fossils Theme_Keyword: Plutonic Hosted Theme_Keyword: Polymetallic Vein Theme_Keyword: Production Data Theme_Keyword: Resource Assessment Theme_Keyword: Sandstone Theme_Keyword: Siltstone Theme_Keyword: Silver Theme_Keyword: Stream Sediments Theme_Keyword: Structure Theme_Keyword: Surficial Theme_Keyword: Tantalum Theme_Keyword: Tellurium Theme_Keyword: Terrace Alluvium Theme_Keyword: Tin Theme_Keyword: Trace Metals Theme_Keyword: Tungsten Theme_Keyword: Unconsolidated Deposits Theme_Keyword: Undifferentiated Bedrock Theme_Keyword: Volcanic Theme_Keyword: Volcanic Rocks Theme_Keyword: Wehrlite Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Aniak Mining District Place_Keyword: Black Creek Place_Keyword: Bonanza Creek Place_Keyword: Bonanza Flats Place_Keyword: Boulder Creek Place_Keyword: Butte Creek Place_Keyword: Chicken Creek Place_Keyword: Chicken Mountain Place_Keyword: Doherty Creek Place_Keyword: Fairbanks Creek Place_Keyword: First Chance Creek Place_Keyword: Flat Creek Place_Keyword: Glacier Creek Place_Keyword: Granite Creek Place_Keyword: Happy Creek Place_Keyword: Iditarod Mining District Place_Keyword: Iditarod River Place_Keyword: Innoko Mining District Place_Keyword: Little Caribou Creek Place_Keyword: Little Creek Place_Keyword: Little Eldorado Creek Place_Keyword: Long Creek Place_Keyword: Malamute Gulch Place_Keyword: Martin Creek Place_Keyword: Michigan Creek Place_Keyword: Moose Creek Place_Keyword: Murray Creek Place_Keyword: Otter Creek Place_Keyword: Prince Creek Place_Keyword: Ruby Creek Place_Keyword: Slate Creek Place_Keyword: Tango Creek Place_Keyword: Timber Creek Place_Keyword: Trail Creek Place_Keyword: Widgeon Creek Place_Keyword: Willow Creek Stratum: Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Stratum_Keyword: Black Creek Stock Stratum_Keyword: Innoko Terrane Stratum_Keyword: Kuskokwim Group Stratum_Keyword: Nixon-Iditarod Fault 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: Holocene Temporal_Keyword: Jurassic Temporal_Keyword: Mississippian Temporal_Keyword: Pleistocene 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: The geologic mapping was supported by funding and partnerrship with USGS scientists and funding by Doyon Limited. The authors dedicate this report to the late Richard Fullerton, longtime Iditarod district miner and Alaskan resident, who passed away in late July 1990. The geologic map database was converted to GeMS, quality controlled, and then finalized by DGGS staff Wes Buchanan, Ally Steinleitner, and DGGS contractors. Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G21AC10706, 2022, 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: Lockwood, M.S. Publication_Date: 1988 Title: Geologic map of the Iditarod C-3 Quadrangle, Alaska Series_Information: Series_Name: Professional Report Issue_Identification: PR 96 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 13 p., 1 sheet, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2277 Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Laird, G.M. Publication_Date: 1983 Title: Preliminary geology of the northeastern Iditarod C-3 Quadrangle, Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 83-13 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/10.14509/2352 Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Laird, G.M. Publication_Date: 1982 Title: Geologic map of the Iditarod D-2 and eastern D-3 quadrangles, Alaska Series_Information: Series_Name: Geologic Report Issue_Identification: GR 72 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/10.14509/432 Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Laird, G.M. Publication_Date: 1983 Title: Geologic map of the Iditarod D-1 Quadrangle, Alaska Series_Information: Series_Name: Professional Report Issue_Identification: PR 78 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/10.14509/2252 Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Laird, G.M. Publication_Date: 1983 Title: Geologic map of the McGrath D-6 Quadrangle, Alaska Series_Information: Series_Name: Professional Report Issue_Identification: PR 79 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/10.14509/2253 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 a DGGS Professional Report (PR). A PR is the completed product of original research and analysis, and PRs 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: Ekberg, P.G. Originator: Hendricks, M.D. Originator: Athey, J.E. Publication_Date: 2021 Title: AK GeMS symbology: A description of the AK GeMS style file Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 169 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 7 p Online_Linkage: https://doi.org/10.14509/30584 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Contribution: GIS analysis and digital cartography Source_Information: Source_Citation: Citation_Information: Originator: Hendricks, M.D. Originator: Ekberg, P.G. Originator: Athey, J.E. Originator: Wyatt, W.C. Originator: Willingham, A.L. Originator: Naibert, T.J. Publication_Date: 2021 Title: AK GeMS data dictionary: A description of the Alaska geologic mapping schema Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 170 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 10 p Online_Linkage: https://doi.org/10.14509/30669 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Hendricks, M.D. and others, 2021 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 - DGGS and USGS collaborators conducted geologic field mapping of the bedrock and surficial units in 1984. Access to the study area was primarily by air charter and along mining roads, and nearly all field work was helicopter-supported. Residents and local miners also contributed valuable ideas and information. Geologists recorded observations on 1:63,360-scale topographic base maps and/or similarly scaled aerial photographs. Field notes and rock samples were collected at stations throughout the map area for age determination and geochemical analysis. Samples were collected for petrographic, age, and/or geochemical analysis. The publication received technical review and editing by several scientists familiar with the subject matter. The authors incorporated the reviewers' suggestions into the final draft. Process_Date: 1984 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: Ekberg, P.G. and others, 2021 Source_Used_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Source_Used_Citation_Abbreviation: U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 Process_Date: 2022 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: iditarod_b4_b5_quads_ak_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: iditarod_b4_b5_quads_ak_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: iditarod_b4_b5_quads_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: iditarod_b4_b5_quads_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: iditarod_b4_b5_quads_gems_shapefile_pkg Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: iditarod_b4_b5_quads_gems_shapefile_pkg 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: PR 97 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/10.14509/2278 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20240814 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