Identification_Information: Citation: Citation_Information: Originator: Fusso, L.A. Originator: Petersen, E.I. Originator: Emond, A.M. Originator: EON Geosciences Inc. Publication_Date: 2026 Title: Kuskokwim airborne magnetic and radiometric geophysical survey, Ganes Creek, Alaska (2026) Geospatial_Data_Presentation_Form: digital, data Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2026-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 16 p. Online_Linkage: https://doi.org/10.14509/31746 Description: Abstract: Kuskokwim airborne magnetic and radiometric geophysical survey, Ganes Creek, Alaska (2026), Geophysical Report 2026-1, survey covers part of the Kuskokwim Mountains west of McGrath, Alaska. The survey area includes parts of the Ophir, Medfra, Iditarod, and McGrath quadrangles. EON Geosciences Inc. collected magnetic and radiometric data with a Eurocopter AS350 B2 helicopter from June 21 to September 7, 2024, and a Eurocopter AS350 B3+ helicopter from June 16 to 25, 2025. A total of 25,731 line kilometers were collected, covering 8,197 km2. Magnetic data were collected with a Scintrex CS-3 cesium-vapour split-beam sensor. Radiometric data were collected with two Radiation Solutions RS-500 series multi-channel gamma-ray spectrometers, model RSX-5, with 512 channels, for a total crystal volume of 33.6 liters downward-looking and 8.4 liters upward-looking (for atmospheric radon detection). Data from the Ganes Creek survey will improve the understanding of the geology and mineral potential of the central Kuskokwim River region and promote resource exploration in this part of Alaska. These data are provided as a Geophysical Report under an open end-user license and are available from the DGGS website https://doi.org/10.14509/31746. Purpose: The purpose of this report is to provide airborne magnetic and radiometric geophysical data to improve understanding of the geology and mineral potential of the central Kuskokwim River region and to support resource exploration efforts. These high-resolution data help identify concealed lithologic contacts, structural features, and alteration zones associated with gold and other metallic mineral deposits. Supplemental_Information: >ascii_data: ASCII format line data, other ASCII data >databases_geosoft: Geosoft format database of final line data, other Geosoft format databases >documents: Project report, calibration reports >grids_geosoft: Oasis montaj Geosoft GRD format gridded data >grids_tif: Geographically registered data value rasters of gridded data, GeoTiff format >kmz: Keyhole Markup Language (KML) kmz archive files of project data. Viewable on Google Earth and other compatible programs >maps_pdf: Printable and geographically registered maps in pdf format. >vector_data: Line path and survey boundary in Esri shapefile (shp) format Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2024 Ending_Date: 2025 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -158.421676 East_Bounding_Coordinate: -154.273849 North_Bounding_Coordinate: 63.361469 South_Bounding_Coordinate: 62.210795 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Aeromagnetic Theme_Keyword: Aeromagnetic Data Theme_Keyword: Aeromagnetic Map Theme_Keyword: Aeromagnetic Survey Theme_Keyword: Airborne Geophysical Survey Theme_Keyword: Analytic Signal Theme_Keyword: Bedrock Geology Theme_Keyword: Critical Minerals Theme_Keyword: DGGS Theme_Keyword: Earth MRI Theme_Keyword: Economic Geology Theme_Keyword: Economic Study Theme_Keyword: Exploration Theme_Keyword: Fixed Wing Survey Theme_Keyword: Geology Theme_Keyword: Geophysical Map Theme_Keyword: Geophysical Survey Theme_Keyword: Geophysics Theme_Keyword: Geophysics Search Tag Theme_Keyword: Gridded Data Theme_Keyword: Magnetic Contours Theme_Keyword: Magnetic Data Theme_Keyword: Magnetic Survey Theme_Keyword: Magnetic Susceptibility Theme_Keyword: Magnetics Theme_Keyword: Mineral Assessment Theme_Keyword: Mineral Development Theme_Keyword: Mineral Exploration Theme_Keyword: Mineral Resources Theme_Keyword: Minerals Theme_Keyword: Radiometric Survey Theme_Keyword: Radiometrics Theme_Keyword: Remote Sensing Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alder Creek Place_Keyword: American Creek Place_Keyword: Aniak Mining District Place_Keyword: Anvil Creek Place_Keyword: Baker Creek Place_Keyword: Basin Creek Place_Keyword: Beaver Creek Place_Keyword: Beaver Mountains Place_Keyword: Beef Steak Creek Place_Keyword: Big Creek Place_Keyword: Billy Goat Creek Place_Keyword: Black Creek Place_Keyword: Black Pass Place_Keyword: Bonanza Creek Place_Keyword: Bonanza Flats Place_Keyword: Bonnie Creek Place_Keyword: Boulder Creek Place_Keyword: Brown Creek Place_Keyword: Brush Peak Place_Keyword: Butte Creek Place_Keyword: California Creek Place_Keyword: Camelback Mountain Place_Keyword: Canadian Creek Place_Keyword: Candle Creek Place_Keyword: Candle Hills Place_Keyword: Candle Placer Place_Keyword: Caribou Creek Place_Keyword: Caribou Mountain Place_Keyword: Carl Creek Place_Keyword: Chicken Creek Place_Keyword: Chicken Mountain Place_Keyword: Clear Creek Place_Keyword: Cloudy Mountain Place_Keyword: Crater Mountain Place_Keyword: Deadwood Creek Place_Keyword: Dishna River Place_Keyword: Dodge Creek Place_Keyword: Dollar Creek Place_Keyword: Dome Creek Place_Keyword: Dominion Creek Place_Keyword: Donovan Creek Place_Keyword: Eagle Creek Place_Keyword: Ester Creek Place_Keyword: Fairbanks Creek Place_Keyword: First Chance Creek Place_Keyword: Flat Place_Keyword: Flat Creek Place_Keyword: French Joe Mountain Place_Keyword: Frisco Creek Place_Keyword: Galickson Creek Place_Keyword: Ganes Creek Place_Keyword: George River Place_Keyword: Glacier Creek Place_Keyword: Gold Run Place_Keyword: Goldbottom Creek Place_Keyword: Granite Creek Place_Keyword: Guggenheim Creek Place_Keyword: Happy Creek Place_Keyword: Henry Creek Place_Keyword: Hickey Creek Place_Keyword: Hidden Creek Place_Keyword: Hurst Creek Place_Keyword: Iditarod Mining District Place_Keyword: Iditarod River Place_Keyword: Independence Creek Place_Keyword: Innoko Mining District Place_Keyword: Innoko River Place_Keyword: Ivy Creek Place_Keyword: John Reek Creek Place_Keyword: Jones Creek Place_Keyword: Jumbo Peak Place_Keyword: Kuskokwim Mountains Place_Keyword: Last Chance Creek Place_Keyword: Ledge Creek Place_Keyword: Limestone Mountain Place_Keyword: Lincoln Creek Place_Keyword: Long Creek Place_Keyword: Maiden Creek Place_Keyword: Malamute Gulch Place_Keyword: Martin Creek Place_Keyword: Maybe Creek Place_Keyword: McGrath Mining District Place_Keyword: Medicine Creek Place_Keyword: Minnie Creek Place_Keyword: Montana Creek Place_Keyword: Moore Creek Place_Keyword: Moose Creek Place_Keyword: Mount Hurst Place_Keyword: Mount Joaquin Place_Keyword: Murray Creek Place_Keyword: Mystery Creek Place_Keyword: Naden Creek Place_Keyword: Nixon Fork Place_Keyword: Nixon River Place_Keyword: Ophir Place_Keyword: Ophir Creek Place_Keyword: Otter Creek Place_Keyword: Pedro Creek Place_Keyword: Porcupine Creek Place_Keyword: Porcupine Ridge Place_Keyword: Prince Creek Place_Keyword: Puzzle Creek Place_Keyword: Ready Bullion Creek Place_Keyword: Rex Creek Place_Keyword: Roberts Creek Place_Keyword: Ruby Creek Place_Keyword: Ruby Mining District Place_Keyword: Scow Harry Creek Place_Keyword: Shoaty Creek Place_Keyword: Slate Creek Place_Keyword: Spalding Creek Place_Keyword: Spruce Creek Place_Keyword: Steak Creek Place_Keyword: Steel Creek Place_Keyword: Strand Peak Place_Keyword: Submarine Creek Place_Keyword: Sunset Creek Place_Keyword: Swinging Dome Place_Keyword: Takotna Place_Keyword: Takotna Mountain Place_Keyword: Takotna River Place_Keyword: Tamarack Creek Place_Keyword: Tango Creek Place_Keyword: Tatalina River Place_Keyword: Tecla Creek Place_Keyword: Timber Creek Place_Keyword: Tolstoi Creek Place_Keyword: Tolstoi Lake Place_Keyword: Twin Island Creek Place_Keyword: Twin Mountain Place_Keyword: Wabash Creek Place_Keyword: Warner Creek Place_Keyword: Washington Creek Place_Keyword: Widgeon Creek Place_Keyword: Willow Creek Place_Keyword: Windy Creek Place_Keyword: Yankee Creek 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 work was funded by the United States Geological Survey Earth Mapping Resources Initiative (Earth MRI) grants G22AC00475 and G23AC00408. The authors thank Eon Geosciences for their expertise in geophysical data collections. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey. Cross_Reference: Citation_Information: Originator: Emond, A.M. Originator: MPX Geophysics LTD Publication_Date: 2023 Title: Kuskokwim airborne magnetic and radiometric geophysical survey, northern Kuskokwim Mountains Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2023-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 4 p Online_Linkage: https://doi.org/10.14509/31087 Cross_Reference: Citation_Information: Originator: Emond, A.M. Originator: Fusso, L.A. Originator: Geotech Ltd. Publication_Date: 2024 Title: Kuskokwim airborne magnetic and radiometric survey, Sischu Mountains Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2024-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 4 p Online_Linkage: https://doi.org/10.14509/31094 Cross_Reference: Citation_Information: Originator: Fusso, L.A. Originator: Petersen, E.I. Originator: New Resolution Geophysics, USA Publication_Date: 2025 Title: Kuskokwim airborne magnetic and radiometric survey, Kilbuck and Buckstock Mountains, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2025-5 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 18 p Online_Linkage: https://doi.org/10.14509/31724 Cross_Reference: Citation_Information: Originator: Fusso, L.A. Originator: Petersen, E.I. Originator: Emond, A.M. Originator: EON Geosciences Inc. Publication_Date: 2025 Title: Kuskokwim airborne magnetic and radiometric survey, northern Kaiyuh Mountains, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2025-3 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 18 p Online_Linkage: https://doi.org/10.14509/31493 Cross_Reference: Citation_Information: Originator: Fusso, L.A. Originator: Petersen, E.I. Originator: Emond, A.M. Originator: EON Geosciences Inc. Publication_Date: 2026 Title: Kuskokwim airborne magnetics and radiometric geophysical survey, McGrath, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2026-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 17 p Online_Linkage: https://doi.org/10.14509/31804 Cross_Reference: Citation_Information: Originator: Petersen, E.I. Originator: Fusso, L.A. Originator: Emond, A.M. Originator: SkyTEM Canada Incorporated Originator: Aqua Geo Frameworks LLC Publication_Date: 2025 Title: Kuskokwim airborne electromagnetic survey, northern Kaiyuh Mountains, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2025-2 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/10.14509/31304 Cross_Reference: Citation_Information: Originator: Petersen, E.I. Originator: Fusso, L.A. Originator: Geotech Ltd. Originator: Aqua Geo Frameworks LLC Publication_Date: 2026 Title: Granite Mountain airborne electromagnetic survey, Kuskokwim Region, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2026-4 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/10.14509/31964 Cross_Reference: Citation_Information: Originator: Petersen, E.I. Originator: Fusso, L.A. Originator: Geotech Ltd. Originator: Aqua Geo Frameworks LLC Publication_Date: 2026 Title: Candle Hills airborne electromagnetic survey, Kuskokwim region, Alaska Series_Information: Series_Name: Geophysical Report Issue_Identification: GPR 2026-3 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 9 p Online_Linkage: https://doi.org/10.14509/31963 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: GeophysiScal data were acquired according to the contractor, contract, and request-for-proposals specifications. For additional detail about survey parameters, see the accompanying project report available in the documents directory of this data distribution package. Logical_Consistency_Report: Data were supplied by providers in accordance with DGGS contract requirements (see accompanying project report). The originating coordinate system was retained for all publication products. Completeness_Report: The dataset provides processed geophysical and positional data for the entire survey extent. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Station coordinates were positioned using a real-time or post-processed corrected differential GPS. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Not applicable Lineage: Process_Step: Process_Description: Data acquisition - EON Geosciences Inc (fig. 1) collected magnetic and radiometric data with a Eurocopter AS350 B2 helicopter from June 21 to September 7, 2024, and a Eurocopter AS350 B3+ helicopter from June 16 to 25, 2025. A total of 25,731 line kilometers were collected, covering 8,197 km2. Magnetic data were collected with a Scintrex CS-3 cesium-vapour split-beam sensor. Radiometric data were collected with two Radiation Solutions RS-500 series multi-channel gamma-ray spectrometers, model RSX-5, with 512 channels, for a total crystal volume of 33.6 liters downward-looking and 8.4 liters upward-looking (for atmospheric radon detection). Process_Date: 2025 Process_Step: Process_Description: Data cataloged for archival and publication - Final data were published and archived by DGGS. Process_Date: 2026 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster 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: WGS84 Ellipsoid_Name: WGS 84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ascii_data Entity_Type_Definition: ASCII format line data, other ASCII data Entity_Type_Definition_Source: EON Geosciences Inc. Entity_Attribute_Layer_Name: ascii_data Detailed_Description: Entity_Type: Entity_Type_Label: databases_geosoft Entity_Type_Definition: Geosoft format database of final line data, other Geosoft format databases Entity_Type_Definition_Source: EON Geosciences Inc. Entity_Attribute_Layer_Name: databases_geosoft Detailed_Description: Entity_Type: Entity_Type_Label: documents Entity_Type_Definition: Project report, calibration reports Entity_Type_Definition_Source: EON Geosciences Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: documents Detailed_Description: Entity_Type: Entity_Type_Label: grids_geosoft Entity_Type_Definition: Oasis montaj Geosoft GRD format gridded data Entity_Type_Definition_Source: EON Geosciences Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: grids_geosoft Detailed_Description: Entity_Type: Entity_Type_Label: grids_tif Entity_Type_Definition: Geographically registered data value rasters of gridded data, GeoTiff format Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: grids_tif Detailed_Description: Entity_Type: Entity_Type_Label: kmz Entity_Type_Definition: Keyhole Markup Language (KML) kmz archive files of project data. Viewable on Google Earth and other compatible programs Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: kmz Detailed_Description: Entity_Type: Entity_Type_Label: maps_pdf Entity_Type_Definition: Printable and geographically registered maps in pdf format. Entity_Type_Definition_Source: EON Geosciences Inc. Entity_Attribute_Layer_Name: maps_pdf Detailed_Description: Entity_Type: Entity_Type_Label: vector_data Entity_Type_Definition: Line path and survey boundary in Esri shapefile (shp) format Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: vector_data 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: GPR 2026-1 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: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF (with or without georeferencing), ER Mapper ERS, ASCII text files (including CSV), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), digital images (multiple formats), georeferenced photos (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ. Format_Version_Date: 20260618 Format_Information_Content: Airborne electromagnetic geophysical survey data compilation Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/31746 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20260618 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