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    • Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models: Gravity and Magnetic Grids

    Metadata Updated: July 6, 2024

    Regional geophysical data grid files provided in Grid eXchange File (GXF) format were used to study crustal architecture beneath the Southern Midcontinent (USA) by McCafferty and others (2019). The study covered a rectangular, multi-state area of 924 by 924 kilometers centered on Missouri, and a corresponding volume extending from the topographic surface to a depth of 50 kilometers below sea level. The observed geophysical data grids (Bouguer gravity anomaly and reduced-to-pole (RTP) aeromagnetic anomaly) were used in 3D inversions, and the calculated geophysical data grids were produced by the inversions. All grids are sampled at a 2,000 by 2,000 meter grid interval. Missing data nodes are assigned a value of 1.000000E+38. Two versions of each GXF file are provided: (1) a version with embeded map projection information for use with Geosoft Oasis montaj and the free Geosoft viewer software and (2) a version without map projection information (filenames ending in NoProj.gxf) for use with ArcMap and QGIS. An ArcMap projection file, which contains the missing projection information, is also provided.

    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.

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    Dates

    Metadata Created Date June 1, 2023
    Metadata Updated Date July 6, 2024

    Metadata Source

    Harvested from DOI EDI

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 1, 2023
    Metadata Updated Date July 6, 2024
    Publisher U.S. Geological Survey
    Maintainer
    @Id http://datainventory.doi.gov/id/dataset/9643fe29da56add309fa0e52c24e58e2
    Identifier USGS:5cf14f94e4b056af3664e806
    Data Last Modified 20200929
    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://datainventory.doi.gov/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
    Harvest Object Id fbf9af9b-d4be-4639-8b29-805e28ddf423
    Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
    Harvest Source Title DOI EDI
    Metadata Type geospatial
    Old Spatial -96.6084,33.2204,-85.2028,42.0396
    Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
    Source Datajson Identifier True
    Source Hash 35e057f31fc8e53e3bc8eca8688fe7eb600aa9dbb03ba9066226a8bd86a03ffb
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -96.6084, 33.2204, -96.6084, 42.0396, -85.2028, 42.0396, -85.2028, 33.2204, -96.6084, 33.2204}

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