Identification_Information: Citation: Citation_Information: Originator: Hummel, C.H. Publication_Date: 1962 Title: Preliminary geologic map of the Nome D-1 Quadrangle, Seward Peninsula, Alaska Geospatial_Data_Presentation_Form: geodatabase Series_Information: Series_Name: Mineral Investigations Field Studies Map Issue_Identification: MF 248 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/13142 Description: Abstract: Preliminary geologic map of the Nome D-1 Quadrangle, Seward Peninsula, Alaska, Mineral Investigations Field Studies Map 248, presents a preliminary geologic map of the Nome D-1 Quadrangle, depicting unconsolidated deposits, igneous and metaigneous intrusives, and varied metasedimentary units at a scale of 1:63,360. Unconsolidated deposits include glacial, glaciofluvial, alluvial, and eluvial sediments. Igneous rocks consist of granitic, mafic, and pegmatitic dikes and sills. Metaigneous units include metagranitic and metagranodioritic sills and greenstone sills. Metasedimentary rocks comprise interbedded marble and schist, calcareous schist, quartzite-schist assemblages, marble units, graphitic and calcareous schist, biotite-schist and quartzite assemblages, and dolomitic and calcitic marble. These units display gradational contacts and represent lithologies previously assigned to the Nome Group. The map provides detailed lithologic and structural information to support geologic interpretation and mineral investigations within the quadrangle. 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/13142. Purpose: The map supports geologic interpretation, mineral investigations, and regional geologic studies by illustrating lithologic variability, stratigraphic relationships, and structural features within the quadrangle. 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: 1962 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -165.504582 East_Bounding_Coordinate: -164.999813 North_Bounding_Coordinate: 65.000860 South_Bounding_Coordinate: 64.749184 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: Amphibole Theme_Keyword: Amphibolite Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geologic Map Theme_Keyword: Bedrock Geology Theme_Keyword: Biotite Theme_Keyword: Chlorite Theme_Keyword: Diopside Theme_Keyword: Dolomite Theme_Keyword: Feldspar Theme_Keyword: Felsic Theme_Keyword: Garnet Theme_Keyword: Generalized Theme_Keyword: Geologic Map Theme_Keyword: Geology Theme_Keyword: Gneiss Theme_Keyword: Metamorphic Theme_Keyword: Metamorphic Rocks Theme_Keyword: Quartzite Theme_Keyword: Schist Theme_Keyword: Sedimentary Theme_Keyword: Sedimentary Rocks Theme_Keyword: Surficial Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alfield Creek Place_Keyword: Aurora Creek Place_Keyword: Berkley Canyon Place_Keyword: Boer Creek Place_Keyword: Boldrin Creek Place_Keyword: Bonanza Creek Place_Keyword: Boulder Creek Place_Keyword: Buffalo Creek Place_Keyword: Central River Place_Keyword: Charlie Creek Place_Keyword: Christian Creek Place_Keyword: Clara Creek Place_Keyword: Cobblestone River Place_Keyword: Cold Creek Place_Keyword: Copper Creek Place_Keyword: Copper Mountain Place_Keyword: Crater Creek Place_Keyword: Crater Lake Place_Keyword: David Creek Place_Keyword: Deep Canyon Creek Place_Keyword: Dickens Creek Place_Keyword: Divide Creek Place_Keyword: Dorothy Creek Place_Keyword: Fox Creek Place_Keyword: Francisco Creek Place_Keyword: Fred Creek Place_Keyword: Goldbottom Creek Place_Keyword: Grand Central River Place_Keyword: Grouse Creek Place_Keyword: Hobson Creek Place_Keyword: Hudson Creek Place_Keyword: Jasper Creek Place_Keyword: Jett Creek Place_Keyword: Kigluaik Mountains Place_Keyword: Kougarok Mining District Place_Keyword: La Spray Creek Place_Keyword: Lost Creek Place_Keyword: Manila Creek Place_Keyword: Monte Cristo Creek Place_Keyword: Morning Call Creek Place_Keyword: Mosquito Pass Place_Keyword: Mount Distin Place_Keyword: Mount Osborn Place_Keyword: Mountain Creek Place_Keyword: Nome Mining District Place_Keyword: Nome River Place_Keyword: Nugget Creek Place_Keyword: Paso Robles Creek Place_Keyword: Quartz Creek Place_Keyword: Rainbow Creek Place_Keyword: Rock Creek Place_Keyword: Rocky Mountain Creek Place_Keyword: Salmon Lake Place_Keyword: San Francisco Creek Place_Keyword: Short Creek Place_Keyword: Silver Creek Place_Keyword: Sinuk Place_Keyword: Sinuk River Place_Keyword: Slate Creek Place_Keyword: Star Creek Place_Keyword: Steep Creek Place_Keyword: Stewart River Place_Keyword: Sulphur Creek Place_Keyword: Thompson Creek Place_Keyword: Tigaraha Mountain Place_Keyword: Tumit Creek Place_Keyword: Warren Creek Place_Keyword: Wild Goose Pipeline Place_Keyword: Windy Creek Stratum: Stratum_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Stratum_Keyword: Nome Group 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: Cenozoic Temporal_Keyword: Cretaceous Temporal_Keyword: Mesozoic Temporal_Keyword: Paleozoic 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: Amato, J.M. Originator: Miller, E.L. Publication_Date: 1997 Title: Bedrock geologic map of the Kigluaik Mountains, Seward Peninsula, Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 97-31 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 6 p., 8 sheets, scale 1:42,240 Online_Linkage: https://doi.org/10.14509/1782 Cross_Reference: Citation_Information: Originator: Bundtzen, T.K. Originator: Reger, R.D. Originator: Laird, G.M. Originator: Pinney, D.S. Originator: Clautice, K.H. Originator: Liss, S.A. Originator: Cruse, G.R. Publication_Date: 1994 Title: Progress report on the geology and mineral resources of the Nome mining district, Alaska Series_Information: Series_Name: Public Data File Issue_Identification: PDF 94-39 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 21 p., 2 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/1665 Cross_Reference: Citation_Information: Originator: Clough, J.G. Originator: Roe, J.T. Originator: Eakins, G.R. Originator: Callahan, J.E. Originator: Charlie, K.M. Publication_Date: 1995 Title: Coal resources of northwest Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 93-3 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 35 p., 10 sheets Online_Linkage: https://doi.org/10.14509/2486 Cross_Reference: Citation_Information: Originator: Eakins, G.R. Originator: Goff, K.M. Originator: Morehouse, J.A. Publication_Date: 1982 Title: Northwest coal - transportation study Series_Information: Series_Name: Public Data File Issue_Identification: PDF 83-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 26 p., 3 sheets, scale 1:1,000,000 Online_Linkage: https://doi.org/10.14509/1031 Cross_Reference: Citation_Information: Originator: Pinney, D.S. Originator: Duenwald, E.S. Publication_Date: 2001 Title: Map of industrial minerals occurrences in Alaska Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 43 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 69 p., 2 sheets, scale 1:2,500,000, 1 DVD Online_Linkage: https://doi.org/10.14509/2770 Cross_Reference: Citation_Information: Originator: Rawlinson, S.E. Originator: Hardy, S.B. Publication_Date: 1982 Title: Peat-resource map of Alaska Series_Information: Series_Name: Alaska Open-File Report Issue_Identification: AOF 152 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 2 p., 1 sheet, scale 1:2,500,000 Online_Linkage: https://doi.org/10.14509/86 Cross_Reference: Citation_Information: Originator: Riehle, J.R. Originator: Emmel, K.S. Originator: Bolm, J.G. Publication_Date: 1981 Title: Reconnaissance report on surficial geology of the coastal area from Tolstoi Point to Cape Nome, Norton Sound, Alaska Series_Information: Series_Name: Alaska Open-File Report Issue_Identification: AOF 125 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 27 p., 3 sheets, scale 1:63,360 Online_Linkage: https://doi.org/10.14509/42 Cross_Reference: Citation_Information: Originator: Robinson, M.S. Originator: Stevens, D.L. Publication_Date: 1984 Title: Geologic map of the Seward Peninsula Series_Information: Series_Name: Special Report Issue_Identification: SR 34 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:500,000 Online_Linkage: https://doi.org/10.14509/2633 Cross_Reference: Citation_Information: Originator: Shallit, A.B. Publication_Date: 1942 Title: Report on Sinuk River iron-ore deposits, Seward Peninsula Series_Information: Series_Name: Mineral Investigation Issue_Identification: MI 52-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Territorial Department of Mines Other_Citation_Details: 46 p., 2 sheets Online_Linkage: https://doi.org/10.14509/623 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 Mineral Investigations Field Studies Map (MF), a series that provided detailed geologic and mineral resource information for areas of current or potential economic interest. MF maps offered focused, field-based geologic documentation supported by mapping, sampling, and analytical studies. They supplied practical, site-specific geologic data intended to assist mineral investigations, land-management decisions, and regional geologic interpretation. 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 of the Nome D-1 Quadrangle was completed through field investigations that documented the distribution of unconsolidated deposits, igneous and metaigneous intrusives, and metasedimentary units. Fieldwork included observation and description of lithologies, stratigraphic contacts, structural features, and geomorphic relationships. Rock units were examined and classified based on mineralogy, texture, and weathering characteristics, and gradational contacts were traced and recorded where present. Unconsolidated deposits were mapped using surface morphology and sediment characteristics. Igneous and metaigneous dikes and sills were identified and differentiated by composition. Metasedimentary units were mapped by tracing changes in schist, quartzite, marble, and mixed lithologies. Field data were compiled with existing geologic information to delineate unit boundaries and prepare a preliminary geologic map at 1:63,360 scale. Final compilation included organizing lithologic descriptions, standardizing unit terminology, and preparing the map layout for publication. Process_Date: 1962 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: 3 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -165 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: nome_d1_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: nome_d1_quad_ak_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: nome_d1_quad_gems_db Entity_Type_Definition: Geodatabase, layer files, style files, and fonts Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: nome_d1_quad_gems_db Detailed_Description: Entity_Type: Entity_Type_Label: nome_d1_quad_gems_geopackage Entity_Type_Definition: SQLite Database file Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: nome_d1_quad_gems_geopackage Detailed_Description: Entity_Type: Entity_Type_Label: nome_d1_quad_gems_shapefile Entity_Type_Definition: Shapefiles and open data files Entity_Type_Definition_Source: DGGS and USGS Entity_Attribute_Layer_Name: nome_d1_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: MF 248 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/13142 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20260730 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