Identification_Information: Citation: Citation_Information: Originator: Pinney, D.S. Publication_Date: 2001 Title: Surficial-geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3C 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/10.14509/2671 Description: Abstract: Preliminary Interpretive Report 2001-3C, Surficial-Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska, provides 1:63,360-scale geologic mapping of the Eagle A-2 Quadrangle. The area is part of the 100-year old Fortymile mining district and is located in eastern Alaska near the Alaska-Yukon border. This map illustrates the distribution of a variety of unconsolidated deposits and undifferentiated bedrock in the Eagle A-2 Quadrangle, Fortymile mining district. It was prepared by the interpretation of 1:63,360-scale, false-color, infrared aerial photographs taken from July 1978 through August 1981 and is locally verified by ground observations during field visits. The results should be considered reconnaissance in nature. The dominant unconsolidated deposit is colluvium, which mantles most surfaces other than the tops of ridges and those areas immediately adjacent to streams. Three levels of stream terrace can be traced along major drainages at elevations of roughly 200, 100, and 30 meters above modern streams. A fourth low terrace is limited to the southwest part of the map area. Pleistocene mammalian remains have been recovered from ice-rich organic silt and muck overlying placer gravels in many valleys. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2671. Purpose: The purpose of the project was to produce a series of 1:63,360-scale geologic maps for a portion of the Fortymile mining district. The geologic data is important for characterizing and distinguishing between geologic units. Previously published 1:63,360-scale geologic maps of this area have been reconnaissance-level maps or only covered portions of the quadrangle. Mapping at 1:63,360 scale or greater detail is needed to identify critical geologic features that may relate to more regional geologic units. The Fortymile project is part of DGGS's Airborne Geophysical and Geological Mineral Inventory Program (AGGMI), a special multi-year investment by the State of Alaska to produce framework geologic maps that will expand the knowledge base of Alaska's geologic and mineral resources, catalyze future private-sector mineral exploration and development, and guide government agencies' planning. 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: 1999 Ending_Date: 2001 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -142.009023 East_Bounding_Coordinate: -141.495528 North_Bounding_Coordinate: 64.252564 South_Bounding_Coordinate: 63.997419 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Alluvial Theme_Keyword: Alluvial Deposits Theme_Keyword: Alluvial Fan Theme_Keyword: Alluvium Theme_Keyword: Colluvial Deposits Theme_Keyword: Colluvium Theme_Keyword: Complex Deposits Theme_Keyword: DGGS Theme_Keyword: Floodplain Theme_Keyword: GeMS Theme_Keyword: GeMS NCGMP09 Theme_Keyword: Geologic Map Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Geotechnical Theme_Keyword: Hazards Theme_Keyword: Landslide Deposit Theme_Keyword: Mammoth Theme_Keyword: Mining Theme_Keyword: Paleochannel Theme_Keyword: Permafrost Theme_Keyword: Pingos Theme_Keyword: Placer Theme_Keyword: STATEMAP Project Theme_Keyword: Surficial Theme_Keyword: Surficial Geologic Map Theme_Keyword: Surficial Geology Theme_Keyword: Tailings Theme_Keyword: Tephra Theme_Keyword: Terrace Theme_Keyword: Volcanic Ash Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alder Creek Place_Keyword: Atwater Creek Place_Keyword: Buckskin Creek Place_Keyword: Butte Creek Place_Keyword: Chicken Place_Keyword: Chicken Creek Place_Keyword: Dennison Fork Place_Keyword: Dewey Creek Place_Keyword: Eagle Creek Place_Keyword: Forest Creek Place_Keyword: Fortymile Mining District Place_Keyword: Fortymile River Place_Keyword: Franklin Place_Keyword: Franklin Creek Place_Keyword: George Creek Place_Keyword: Jefferson Creek Place_Keyword: Liberty Creek Place_Keyword: Lost Chicken Creek Place_Keyword: Lost Chicken Hill Place_Keyword: Mosquito Fork Place_Keyword: Myers Fork Place_Keyword: Napoleon Creek Place_Keyword: North Fork Fortymile River Place_Keyword: Ophelia Creek Place_Keyword: Polly Creek Place_Keyword: Soda Creek Place_Keyword: South Fork Fortymile River Place_Keyword: Stonehouse Creek Place_Keyword: Switch Creek Place_Keyword: Taylor Creek Place_Keyword: Tin Kettle Creek Place_Keyword: Uhler Creek Place_Keyword: Voss Creek Place_Keyword: Wade Creek Place_Keyword: Walker Fork Place_Keyword: Wall Street Creek Place_Keyword: Wilson 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: Pleistocene Temporal_Keyword: Quaternary 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 Alaska Airborne Geophysical/Geological Mineral Inventory Program funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding for the geologic mapping was also provided by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, under STATEMAP award number 00HQAG0071 under the NCGM STATEMAP program for FY2000. 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: DGGS Staff Originator: Szumigala, D.J. Publication_Date: 2000 Title: Alaska GeoSurvey News - Mineral-oriented geologic mapping of the Fortymile mining district Series_Information: Series_Name: Newsletter Issue_Identification: NL 2000-3 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/10.14509/14585 Cross_Reference: Citation_Information: Originator: Pinney, D.S. Publication_Date: 2001 Title: Engineering - geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3D 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/10.14509/2672 Cross_Reference: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Finseth, B.A. Originator: Pinney, D.S. Originator: Flynn, R.L. Publication_Date: 2000 Title: Major-oxide, minor-oxide, trace-element, and geochemical data from rocks collected in a portion of the Fortymile mining district, Alaska, 1999 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2000-1 v. 1.0.1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 24 p., 2 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2727 Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Originator: Pinney, D.S. Publication_Date: 2001 Title: Geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3A 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/10.14509/2669 Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Publication_Date: 2001 Title: Bedrock geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3B 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/10.14509/2670 Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Grady, J.C. Originator: Munly, W.C. Publication_Date: 2000 Title: Major-oxide, minor-oxide, trace-element, rare-earth element, and geochemical data from rocks collected in Eagle and Tanacross quadrangles, Alaska in 2000 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2000-4 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 29 p., 3 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/2729 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Certainty in attribute interpretation varies throughout the map and is scale-dependent. Attribute fields within each feature class record the authors' degree of confidence in the existence or identity of applicable features. Logical_Consistency_Report: All polygon features were topologically validated according to specifications of the AK GeMS geologic mapping schema. Completeness_Report: This publication is released as a DGGS Preliminary Interpretive Report (PIR). A PIR is intended to provide timely release maps and reports with a preliminary interpretation of geology or analytical data. One or two people familiar with the geologic problem 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: 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: Weber, F.R. Originator: Hamilton, T.D. Publication_Date: 1984 Title: Glacial geology of the Mt. Prindle area, Yukon-Tanana upland, Alaska Series_Information: Series_Name: Professional Report Issue_Identification: PR 86H Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: p. 42-48 Online_Linkage: https://doi.org/10.14509/2267 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1984 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Weber, F.R. and Hamilton, T.D., 1984, p. 42-48 Source_Contribution: Geologic mapping Source_Information: Source_Citation: Citation_Information: Originator: Yeend, W.E. Publication_Date: 1996 Title: Gold placers of the historical Fortymile River region, Alaska Series_Information: Series_Name: Bulletin Issue_Identification: B 2125 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 75 p., 1 sheet, scale 1:63,360 Online_Linkage: https://dggs.alaska.gov/pubs/id/3781 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Yeend, W.E., 1996 Source_Contribution: Geologic mapping Process_Step: Process_Description: Geologic mapping - Fieldwork for surficial investigations, including traverses, roadcut investigations, and river exposures, was conducted for 60 person-days during June through August in 1999 - 2000. Field notes and sediment samples were collected throughout the quadrangle for surficial investigations. Surficial mapping involved using Yeend (1996) regularly for checking placer geology and general units. Surficial mappers recorded observations on co-registered acetate overlays on 1:50,000-scale (nominal) color-infrared aerial photographs and directly on 1:63,360-scale topographic base maps. Stations were located using air photos and handheld GPS devices with location precision varying from 3 to 15 meters. Laboratory analyses were performed on radiocarbon samples and gold-bearing gravel samples from June 1999 intermittently through April 2001. Source_Used_Citation_Abbreviation: Weber, F.R. and Hamilton, T.D., 1984, p. 42-48 Source_Used_Citation_Abbreviation: Yeend, W.E., 1996 Process_Date: 2001 Process_Step: Process_Description: Geologic map compilation - Surficial-geologic information was interpreted using 1:50,000-scale (nominal) air-photo stereopairs, and compiled onto acetate overlays. The overlay information was transferred to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope. Surficial-geologic information was digitized from the paper USGS topographic base map into Arc/Info 7.0.4 GIS (ArcEdit module) using a large-format digitizing table. Surficial-geologic polygons and lines were then edited and attributed using Arc, Info, and ArcEdit. Bedrock point data (see DGGS PIR 2002-1B) of locations of structural observations (strike, dip, cleavage, jointing, etc.) and 'rubblecrop' were intersected with the surficial-geologic polygon coverage using the Arc command 'intersect' in order to identify locations that were mapped as surficial materials based on aerial photography but were found to have small exposures that were desirable to be mapped as bedrock. These areas were then modified in the surficial-geologic coverages to be areas of bedrock exposure. Project staff and peer reviewers evaluated the report and accompanying data for readability and logical consistency with related information sources. Process_Date: 2001 Process_Step: Process_Description: GIS analysis and digital cartography - The geologic and geographic features portrayed in this data distribution package were organized and attributed according to the AK GeMS geologic mapping schema. Source_Used_Citation_Abbreviation: Ekberg, P.G. and others, 2021 Source_Used_Citation_Abbreviation: Hendricks, M.D. and others, 2021 Process_Date: 2021 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: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -141 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: 6378206.40000000037 Denominator_of_Flattening_Ratio: 294.978698199999997 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: eagle_a2_surficial_geology_ak_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eagle_a2_surficial_geology_ak_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: eagle_a2_surficial_geology_fed_gems_db_pkg Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eagle_a2_surficial_geology_fed_gems_db_pkg Detailed_Description: Entity_Type: Entity_Type_Label: eagle_a2_surficial_geology_fed_gems_shapefile_pkg Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eagle_a2_surficial_geology_fed_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 2001-3C 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/10.14509/2671 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20210825 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