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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Reconnaissance report on surficial geology of the coastal area from Tolstoi Point to Cape Nome, Norton Sound, Alaska

    Metadata Updated: October 4, 2025

    Reconnaissance report on surficial geology of the coastal area from Tolstoi Point to Cape Nome, Norton Sound, Alaska, Alaska Open-File Report 125, presents a reconnaissance study of the surficial geology along the coastal region of Norton Sound, Alaska, from Cape Nome to Tolstoi Point. Based on photo-interpretation and helicopter-supported fieldwork conducted in July 1978, researchers mapped unconsolidated deposits, tracked littoral transport patterns, and quantified coastal erosion and progradation rates. Evidence of at least two high sea-level stands was found at elevations of approximately 4.5 and 16 meters above present mean sea level. The dominant deposits are undifferentiated silty sand and moderately sorted sandy gravel, shaped by marine processes and altered by slope movement. Other notable features include floodplains, beaches, landslides, intertidal flats, ice-wedge polygons, and thermokarst terrain. Littoral transport directions vary across the region, with erosion rates reaching up to 4 meters per year in areas with unconsolidated sea cliffs. These findings inform coastal-zone planning, geologic hazard preparedness, and assessments of hydrocarbon potential in the offshore Norton Basin. The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/42.

    Access & Use Information

    Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

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    Dates

    Metadata Date October 2, 2025
    Metadata Created Date October 4, 2025
    Metadata Updated Date October 4, 2025
    Reference Date(s) January 1, 1981 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from Alaska Division of Geological and Geophysical Surveys

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 2, 2025
    Metadata Created Date October 4, 2025
    Metadata Updated Date October 4, 2025
    Reference Date(s) January 1, 1981 (publication)
    Responsible Party Alaska Division of Geological & Geophysical Surveys (Point of Contact)
    Contact Email
    Guid e0cf6236-32fa-4882-a2df-463e5f811f33_source
    Access Constraints 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., 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).
    Bbox East Long -160.447653
    Bbox North Lat 65.019889
    Bbox South Lat 63.571870
    Bbox West Long -165.000096
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id e0cf6236-32fa-4882-a2df-463e5f811f33
    Harvest Source Id 8f77b6d5-f630-4995-bdf3-0aee7158a7f3
    Harvest Source Title Alaska Division of Geological and Geophysical Surveys
    Licence 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.
    Lineage This lineage was generated by the FGDC CSDGM to 19139 transformation
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-165.000096, 63.57187], [-160.447653, 63.57187], [-160.447653, 65.019889], [-165.000096, 65.019889], [-165.000096, 63.57187]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1978-01-01
    Temporal Extent End 1981-01-01

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