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

    Geology and geochemistry of the Inmachuk River map area, Seward Peninsula, Alaska

    Metadata Updated: October 4, 2025

    Geology and geochemistry of the Inmachuk River map area, Seward Peninsula, Alaska, Geologic Report 23, presents a geological overview of the Inmachuk map area, a 110-square-mile region in Alaska's northern Seward Peninsula. Fieldwork was conducted from July 13 to July 31, 1965. Mineral deposits include lead-zinc lodes and placer gold near Hannum Creek, gossan zones to the southeast, and reported placer tin in nearby creeks. Additional placer gold occurs along the Inmachuk River, just east of the mapped area. The terrain consists of tundra-covered low hills underlain by schist, phyllite, and marble. A structural dome in the southern area exposes thick marble intruded by Mesozoic(?) granite. Mineralization includes marble-hosted pyrite-lead-zinc at Ear Mountain Creek and fault-controlled gossan zones with low metal values. Soil and stream sediment anomalies near Hannum Creek suggest detrital lead transport. Weak lead and tin anomalies on the dome's flanks may indicate bedrock sources, though no surface ore was found. The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/352.

    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, 1966 (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, 1966 (publication)
    Responsible Party Alaska Division of Geological & Geophysical Surveys (Point of Contact)
    Contact Email
    Guid dc3d50bb-5ac1-477e-8d5c-04763f2fb43b_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 -163.009405
    Bbox North Lat 65.963591
    Bbox South Lat 65.711347
    Bbox West Long -163.411811
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id dc3d50bb-5ac1-477e-8d5c-04763f2fb43b
    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": [[[-163.411811, 65.711347], [-163.009405, 65.711347], [-163.009405, 65.963591], [-163.411811, 65.963591], [-163.411811, 65.711347]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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