Identification_Information: Citation: Citation_Information: Originator: Athey, J.E. Originator: Freeman, L.K. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Szumigala, D.J. Originator: Lessard, R.R. Publication_Date: 2022 Title: Bedrock geologic map of the northern Fairbanks mining district, Circle Quadrangle, Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2022-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 24 p., 1 sheet, scale 1:50,000 Online_Linkage: https://doi.org/10.14509/30891 Description: Abstract: Bedrock geologic map of the northern Fairbanks mining district, Circle Quadrangle, Alaska, Preliminary Interpretive Report 2022-2, presents a 1:50,000-scale bedrock geologic map of the northern Fairbanks mining district, covering parts of the Circle A-4, A-5, B-4, and B-5 quadrangles. The 188-square-mile study area is 55 direct miles northeast of Fairbanks, straddling the Steese Highway between miles 66 and 85. The field area is coincident with the northern tip of the Fairbanks mining district, Alaska's largest historic producer at just less than 17 million troy ounces of gold. This area is within the northeast-oriented trend between plutonic-related gold mineralization in the central Fairbanks mining district and placer gold deposits in the northwest Circle mining district. During June 2007, personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) and the University of Alaska Fairbanks spent approximately 189 person-days conducting fieldwork in the northeast Fairbanks area. Geologic units are defined by field observations and analysis of samples collected at more than 2,222 stations. Unit descriptions are also based on the petrographic examination and modal analysis of 301 thin sections (this study), 116 thin sections collected in the Circle Quadrangle by the U.S. Geological Survey from 1979-1981, and 26 thin sections from the 1986 Lime Peak-Mt. Prindle project. Metamorphic rocks and younger, unmetamorphosed igneous rocks were primarily defined by chemical composition, examination of hand samples, and petrography. Forty-four rock samples were analyzed for major- and minor-oxide by a commercial analytical laboratory and trace elements by the University of Alaska Fairbanks. These data are used to suggest possible protoliths of metamorphosed and altered rocks, identify types of alteration, and assign trace element-indicated tectonic settings to igneous and metamafic rocks. Non-carbonate carbon in 16 samples was measured by a commercial analytical laboratory. Garnet-biotite geothermometry and garnet-plagioclase-muscovite-biotite equilibria geobarometry were conducted on 16 samples to assess the metamorphic history of the units. Five 40Ar/39Ar ages were used to constrain the timing of igneous events, mineralization, and metamorphism in the northeast Fairbanks area. One U-Pb detrital zircon age provides a maximum age of the metamorphosed sedimentary rocks and for regional unit correlations. Total field magnetic and electromagnetic geophysical data aided our bedrock mapping, especially in areas covered by vegetation and unconsolidated Quaternary deposits. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/30891. Purpose: The bedrock geologic interpretations and investigation of the northern Fairbanks mining district, Alaska, were implemented as part of an ongoing DGGS program to provide geologic mapping and supporting geochemical, petrologic, and geochronologic data to foster a better understanding of Alaska's geology and mineral potential. 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: 2007 Ending_Date: 2022 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -146.474345 East_Bounding_Coordinate: -145.982025 North_Bounding_Coordinate: 65.411456 South_Bounding_Coordinate: 65.207853 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Actinolite Theme_Keyword: Airborne Geophysical/Geological Mineral Inventory Theme_Keyword: Amphibolite Theme_Keyword: Analyses Theme_Keyword: Antimony Theme_Keyword: Arsenopyrite Theme_Keyword: Bedrock Theme_Keyword: Calcite Theme_Keyword: Chlorite Theme_Keyword: Conglomerate Theme_Keyword: DGGS Theme_Keyword: Diorite Theme_Keyword: Epidote Theme_Keyword: Feldspar Theme_Keyword: Garnet Theme_Keyword: GeMS DB L3 Compliant Theme_Keyword: GeMS DB v1pt1 Theme_Keyword: Geologic Theme_Keyword: Geologic Map Theme_Keyword: Gold Theme_Keyword: Granite Theme_Keyword: Granodiorite Theme_Keyword: Graphite Theme_Keyword: Hematite Theme_Keyword: Hornblende Theme_Keyword: Igneous Theme_Keyword: Lode Theme_Keyword: Magnetite Theme_Keyword: Marble Theme_Keyword: Metamorphic Theme_Keyword: Metamorphic Minerals Theme_Keyword: Metamorphic Rocks Theme_Keyword: Metamorphism Theme_Keyword: Mica Theme_Keyword: Mineral Deposit Theme_Keyword: Minerals Theme_Keyword: Mining Theme_Keyword: Monzonite Theme_Keyword: Mudstone Theme_Keyword: Placer Theme_Keyword: Placer Gold Theme_Keyword: Plagioclase Theme_Keyword: Pyrite Theme_Keyword: Pyrrhotite Theme_Keyword: Quartz Theme_Keyword: Quartzite Theme_Keyword: Rocks Theme_Keyword: Sand Theme_Keyword: Schist Theme_Keyword: Sedimentary Theme_Keyword: Sericite Theme_Keyword: Staurolite Theme_Keyword: Stibnite Theme_Keyword: Tourmaline Theme_Keyword: Zircon Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Bear Creek Place_Keyword: Charity Creek Place_Keyword: Chatanika River Place_Keyword: Circle Mining District Place_Keyword: Crooked Creek Place_Keyword: Deep Creek Place_Keyword: Fairbanks Mining District Place_Keyword: Faith Creek Place_Keyword: Frozenfoot Creek Place_Keyword: Harrington Fork Place_Keyword: Hope Creek Place_Keyword: Horse Creek Place_Keyword: Idaho Creek Place_Keyword: McManus Creek Place_Keyword: Montana Creek Place_Keyword: Mount Ryan Place_Keyword: Polar Creek Place_Keyword: Pool Creek Place_Keyword: Ruby Creek Place_Keyword: Smith Creek Place_Keyword: Sourdough Creek Place_Keyword: Steese Highway Place_Keyword: Swamp Saddle Place_Keyword: Tough Luck Creek Place_Keyword: Yukon-Tanana Upland Place_Keyword: Zephyr Creek 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: Cambrian Temporal_Keyword: Cretaceous Temporal_Keyword: Early Cretaceous Temporal_Keyword: Late Proterozoic Temporal_Keyword: Proterozoic 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: This project is part of the State of Alaska's Airborne Geophysical/Geological Mineral Inventory (AGGMI) program, a special multi-year investment by the state to expand Alaska's geologic and mineral resources knowledge base, catalyze future private-sector mineral exploration and development, and guide state planning. AGGMI was funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. This geologic map was partly funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number 07HQAG0076, 2007 (fieldwork) and G20AC00367, 2020 (GeMS conversion). The State of Alaska General Fund provided additional funding. 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. 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 Preliminary Interpretive Report (PIR). A PIR provides timely release maps and reports with a preliminary interpretation of geology or analytical data. Several scientists familiar with the geology of map area have reviewed this publication for technical content. 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: Athey, J.E. Originator: Freeman, L.K. Originator: Werdon, M.B. Originator: Szumigala, D.J. Originator: Lessard, R.R. Originator: Newberry, R.J. Originator: Hansen, S.E. Originator: Jing, L. Publication_Date: 2008 Title: Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments collected in the northern Fairbanks mining district, Circle Quadrangle, Alaska in 2007 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2008-1 v. 1.0.1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 41 p Online_Linkage: https://doi.org/10.14509/15901 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Athey, J.E. and others, 2008 Source_Contribution: Geologic mapping Source_Information: Source_Citation: 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: Northeast Fairbanks electromagnetic and magnetic airborne geophysical survey data compilation Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2018-11 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 12 p Online_Linkage: https://doi.org/10.14509/30062 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2019 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Burns, L.E. and others, 2019 Source_Contribution: Geologic mapping 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: Smith, T.E. Originator: Pessel, G.H. Originator: Wiltse, M.A. Publication_Date: 1987 Title: Mineral assessment of the Lime Peak-Mt. Prindle area, Alaska Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 29 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 712 p., 13 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/731 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Smith, T.E. and others, 1987 Source_Contribution: Geologic mapping 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 - During June 2007, personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) and the University of Alaska Fairbanks spent approximately 189 person-days conducting field work in the northeast Fairbanks area. The study area is located within the Yukon-Tanana Uplands, and elevations in the map area range from 1,417 to 4,184 feet. Topography consists of moderate- to steep-sided ridges and domes vegetated with tundra, spruce, aspen, poplar, alder, and willow. About half of the study area was partially burned in the 2004 Boundary wildfire, and exposed bedrock was discovered during 2007 fieldwork in places that were previously heavily vegetated. Natural outcrops commonly occur along hilltops, steep slopes, and in incised stream valleys. The map area covers the central portion of the Northeast Fairbanks airborne geophysical survey (Burns and others, 2006; superseded by Burns and others, 2019a). Total field magnetic and electromagnetic geophysical data aided our bedrock mapping, especially in areas covered by vegetation and unconsolidated Quaternary deposits. Geologic units are defined by field observations and analysis of samples collected at more than 2,222 stations. Unit descriptions are also based on the petrographic examination and modal analysis of 301 thin sections (this study), 116 thin sections collected in the Circle Quadrangle by the U.S. Geological Survey from 1979-1981, and 26 thin sections from the 1986 Lime Peak-Mt. Prindle project (Smith and others, 1987). Metamorphic rocks and younger, unmetamorphosed igneous rocks were primarily defined by chemical composition, examination of hand samples, and petrography. Forty-four rock samples were analyzed for major- and minor-oxide by a commercial analytical laboratory, and trace elements by the University of Alaska Fairbanks. These data are used to suggest possible protoliths of metamorphosed and altered rocks, identify types of alteration, and assign trace element-indicated tectonic settings to igneous and metamafic rocks. Non-carbonate carbon in 16 samples was measured by a commercial analytical laboratory. Garnet-biotite geothermometry and garnet-plagioclase-muscovite-biotite equilibria geobarometry were conducted on 16 samples to assess the metamorphic history of the units. Five 40Ar/39Ar ages were used to constrain timing of igneous events, mineralization, and metamorphism in the northeast Fairbanks area. One U-Pb detrital zircon age provides a maximum age of the metamorphosed sedimentary rocks and for regional unit correlations. The conceptual framework for the geology incorporates key ideas from preexisting literature with new data and interpretations developed from field mapping and analytical findings. The accompanying map or report provides a comprehensive bibliographic reference list of prior work used to identify and delineate rock units and structural elements. Source_Used_Citation_Abbreviation: Athey, J.E. and others, 2008 Source_Used_Citation_Abbreviation: Burns, L.E. and others, 2019 Source_Used_Citation_Abbreviation: Smith, T.E. and others, 1987 Process_Date: 2007 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: 6 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -147 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: ne_fairbanks_ak_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: ne_fairbanks_ak_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: ne_fairbanks_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: ne_fairbanks_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: ne_fairbanks_gems_shapefile_pkg Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: ne_fairbanks_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: PIR 2022-2 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 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/30891 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20220829 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