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    • National Assessment of Oil and Gas Project - Illinois Basin Province (064) Total Petroleum Systems

    Metadata Updated: January 21, 2026

    The Total Petroleum System is used in the National Assessment Project and incorporates the Assessment Unit, which is the fundamental geologic unit used for the assessment of undiscovered oil and gas resources. The Total Petroleum System is shown here as a geographic boundary defined and mapped by the geologist responsible for the province and incorporates not only the set of known or postulated oil and (or) gas accumulations, but also the geologic interpretation of the essential elements and processes within the petroleum system that relate to source, generation, migration, accumulation, and trapping of the discovered and undiscovered petroleum resource(s).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date January 13, 2026
    Metadata Updated Date January 21, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 13, 2026
    Metadata Updated Date January 21, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_60ca3640d34e86b938a1062d
    Data Last Modified 2021-06-16T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Datagov Dedupe Retained 20260121024932
    Harvest Object Id 3c651556-d4c0-476b-987b-146a886c7292
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -93.00, 34.50, -93.00, 42.50, -83.00, 42.50, -83.00, 34.50, -93.00, 34.50}
    Source Datajson Identifier True
    Source Hash fb02d6130f5976e86ffaaa6bdee931aef919b2293daaf9d4d496115f9eee5b84
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -93.00, 34.50, -93.00, 42.50, -83.00, 42.50, -83.00, 34.50, -93.00, 34.50}

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