Identification_Information: Citation: Citation_Information: Originator: Foster, H.L. Originator: Keith, T.C. Publication_Date: 1968 Title: Preliminary geologic map of the Eagle B-1 and C-1 quadrangles, Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Open-File Report Issue_Identification: OF 68-103 Publication_Information: Publication_Place: United States Publisher: U.S. Geological Survey Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: https://dggs.alaska.gov/pubs/id/10771 Description: Abstract: Preliminary geologic map of the Eagle B-1 and C-1 quadrangles, Alaska, Open-File Report 68-103, presents a preliminary geologic map compilation of the Eagle B-1 and C-1 quadrangles in east-central Alaska, showing unconsolidated deposits, sedimentary and igneous units, and a broad suite of metamorphic rocks. Alluvial deposits include floodplain and low-terrace gravel, sand, and silt, and high stream-terrace gravel and sand that are well rounded, well sorted, and locally mantled by windblown silt. Detrital sedimentary rocks consist of non-marine conglomerate, sandstone, and shale containing rounded ultramafic and chert clasts and minor plant fragments. Igneous units include fine-grained basalt dikes with columnar jointing; coarse- to fine-grained granitic rocks dominated by feldspar and quartz; serpentinized ultramafic rocks; and massive quartz-feldspar rock locally associated with muscovite schist. Slightly metamorphosed sedimentary rocks include argillite, phyllite, porous limestone, and minor greenstone. Metamorphic units range from massive to foliated greenstone derived from mafic volcanic rocks to quartz-chlorite-epidote and quartz-mica schists, calcareous schist, quartzite, and marble. Additional units include quartz-graphite schist with interlayered quartzite and mica schist, and amphibolite- to greenschist-facies gneiss and schist containing abundant hornblende and garnet. The map documents lithologic diversity, metamorphic grade, and structural complexity across the quadrangles and provides a geologic framework for regional mapping and resource evaluation. The dataset provides geologic, structural, stratigraphic, and geochronologic information organized according to the GeMS and AK GeMS mapping schemas. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: https://dggs.alaska.gov/pubs/id/10771. Purpose: This mapping improves Alaska's understanding of bedrock and surficial geology in the Eagle B-1 and C-1 quadrangles by outlining major lithologic units and metamorphic assemblages. It identifies key alluvial deposits, detrital sedimentary rocks, intrusive igneous units, slightly metamorphosed sedimentary rocks, and greenschist- to amphibolite-facies schist and gneiss. The resulting geologic framework supports mineral resource evaluation, land-management planning, and future geologic work across Alaska. Supplemental_Information: This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Macpherson, A.E., Athey, J.E., Wyatt, W.C., Montayne, Simone, Buchanan, Wes, Rivera, P.G., and Steinleitner, A.M., 2024, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170 v. 2, 13 p. https://doi.org/10.14509/31172. The distribution package includes ESRI fonts and style files, along with usage instructions. Further documentation of the symbology is provided by Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 169, 7 p. https://doi.org/10.14509/30584. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1968 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -141.509552 East_Bounding_Coordinate: -140.999789 North_Bounding_Coordinate: 64.750613 South_Bounding_Coordinate: 64.249234 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: Alluvium Theme_Keyword: Amphibole Theme_Keyword: Amphibolite Theme_Keyword: Argillite Theme_Keyword: Basalt Theme_Keyword: Basins Theme_Keyword: Bedrock Theme_Keyword: Biotite Theme_Keyword: Breccia Theme_Keyword: Chert Theme_Keyword: Chlorite Theme_Keyword: Conglomerate Theme_Keyword: Dike Theme_Keyword: Dunite Theme_Keyword: Epidote Theme_Keyword: Feldspar Theme_Keyword: Felsic Theme_Keyword: Floodplain Theme_Keyword: Garnet Theme_Keyword: Generalized Theme_Keyword: Geology Theme_Keyword: Gneiss Theme_Keyword: Graphite Theme_Keyword: Gravel Theme_Keyword: Greenschist Theme_Keyword: Greenstone Theme_Keyword: Hornblende Theme_Keyword: Igneous Theme_Keyword: Igneous Rocks Theme_Keyword: Intrusive Theme_Keyword: Limestone Theme_Keyword: Marble Theme_Keyword: Marine Theme_Keyword: Metamorphic Theme_Keyword: Metamorphic Rocks Theme_Keyword: Metamorphism Theme_Keyword: Mica Theme_Keyword: Muscovite Theme_Keyword: Peridotite Theme_Keyword: Phyllite Theme_Keyword: Plagioclase Theme_Keyword: Quartz Theme_Keyword: Quartzite Theme_Keyword: Rocks Theme_Keyword: Sand Theme_Keyword: Sandstone Theme_Keyword: Schist Theme_Keyword: Sediment Theme_Keyword: Sedimentary Theme_Keyword: Sedimentary Rocks Theme_Keyword: Sericite Theme_Keyword: Serpentine Theme_Keyword: Shale Theme_Keyword: Silt Theme_Keyword: Slate Theme_Keyword: Terrace Theme_Keyword: Tuff Theme_Keyword: Ultramafic Theme_Keyword: Volcanic Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alder Creek Place_Keyword: Alma Creek Place_Keyword: American Creek Place_Keyword: Bluff Creek Place_Keyword: Boundary Creek Place_Keyword: Bow Creek Place_Keyword: Buck Creek Place_Keyword: Buckeye Creek Place_Keyword: Castalia Creek Place_Keyword: Columbia Creek Place_Keyword: Cripple Creek Place_Keyword: Deadman Island Place_Keyword: Dewey Creek Place_Keyword: Dick Dale Creek Place_Keyword: Dime Creek Place_Keyword: Discovery Creek Place_Keyword: Dome Creek Place_Keyword: Eagle Mining District Place_Keyword: Flat Creek Place_Keyword: Fortymile Dome Place_Keyword: Fortymile Mining District Place_Keyword: Fortymile River Place_Keyword: Georgie Creek Place_Keyword: King Creek Place_Keyword: King Solomon Creek Place_Keyword: Marion Creek Place_Keyword: Mission Creek Place_Keyword: Moose Creek Place_Keyword: Polly Creek Place_Keyword: Powee Creek Place_Keyword: Quartz Creek Place_Keyword: Sam Patch Creek Place_Keyword: Smith Creek Place_Keyword: Snow Creek Place_Keyword: Steele Creek Place_Keyword: Trail Creek Place_Keyword: Twin Creek Place_Keyword: Union Creek Place_Keyword: Wolf Creek Place_Keyword: Yukon River 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: Mesozoic Temporal_Keyword: Paleozoic Temporal_Keyword: Precambrian Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Access_Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Data_Set_Credit: This map was converted to GeMS or digitized into GeMS by Kinney Engineering, LCC., quality controlled, and then finalized by DGGS staff (Chris Wyatt). Ally M. Steinleitner implemented final database quality control and packaging. This geologic map (or report or conversion or product, etc.) was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G24AC00521, 2024, 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: 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: Pinney, D.S. Publication_Date: 2001 Title: Surficial-geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska 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 Cross_Reference: Citation_Information: Originator: Reger, R.D. Originator: Stevens, D.S.P. Originator: Smith, R.L. Publication_Date: 2003 Title: Survey of geology, geologic materials, and geologic hazards in proposed access corridors in the Eagle Quadrangle, Alaska Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 68 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 5 sheets, scale 1:250,000 Online_Linkage: https://doi.org/10.14509/2925 Cross_Reference: Citation_Information: Originator: Stevens, D.S.P. Publication_Date: 2012 Title: Engineering-geologic map of the Eagle A-1 Quadrangle, Fortymile mining district, Alaska Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1D 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/10.14509/24544 Cross_Reference: Citation_Information: Originator: Stevens, D.S.P. Originator: Burns, P.A.C. Publication_Date: 2010 Title: Surficial-geologic map of the Eagle A-1 Quadrangle, Fortymile mining district Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1C 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/10.14509/22081 Cross_Reference: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Athey, J.E. Originator: Flynn, R.L. Originator: Clautice, K.H. Publication_Date: 2002 Title: Bedrock geologic map of the Eagle A-1 Quadrangle, Fortymile mining district Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1B 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/10.14509/2864 Cross_Reference: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Athey, J.E. Originator: Stevens, D.S.P. Originator: Flynn, R.L. Originator: Clautice, K.H. Originator: Craw, P.A. Publication_Date: 2002 Title: Geologic map of the Eagle A-1 Quadrangle, Fortymile mining district Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1A 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/10.14509/2863 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: 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 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 U.S. Geological Survey Open-File Report (OF), which provide rapid public release of scientific information. The series includes interpretive reports, maps, supporting data, preliminary findings, interim computer programs, user guides, and bibliographies. 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 - Geologic mapping was completed by field examination of bedrock and surficial deposits in the Eagle B-1 and C-1 quadrangles. Geologists recorded lithologic characteristics, stratigraphic relations, structural features, and metamorphic textures directly from outcrops. Field observations were combined with reconnaissance mapping from earlier work to refine unit boundaries and update lithologic descriptions. Map units were delineated based on dominant rock type, degree of metamorphism, and sedimentary or igneous features observed in the field. These observations were compiled into a preliminary geologic map showing the distribution of unconsolidated deposits, sedimentary rocks, igneous units, and metamorphic assemblages across the quadrangles. Process_Date: 1968 Process_Step: Process_Description: Data packaging - DGGS organized and attributed the geologic and geographic features according to the AK GeMS schema, then programmatically transformed the data into four distribution formats: (1) an AK GeMS data package containing the full database and supporting files, (2) a GeMS data package converted to the USGS base standard, (3) a SQLite database file, and (4) a simplified shapefile package with shapefile representations of the data. Process_Date: 2026 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 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: 6378206.4 Denominator_of_Flattening_Ratio: 294.9786982 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: eagle_b1_c1_quad_ak_gems_db Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: eagle_b1_c1_quad_ak_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: eagle_b1_c1_quad_gems_db Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: eagle_b1_c1_quad_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: eagle_b1_c1_quad_gems_geopackage Entity_Type_Definition: SQLite Database file Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: eagle_b1_c1_quad_gems_geopackage Detailed_Description: Entity_Type: Entity_Type_Label: eagle_b1_c1_quad_gems_shapefile Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: eagle_b1_c1_quad_gems_shapefile Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: OF 68-103 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://dggs.alaska.gov/pubs/id/10771 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20260901 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