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Spatial Extent of Data

USGS Data Source

USGS Thesaurus Keywords

magnetic susceptibility, crust (earth), bouguer anomaly, bulk density, scientific interpretation, gravimeter measurement, magnetic susceptibility analysis, topography, geophysics, magnetometer measurement, gravimetric methods, aeromagnetic surveying, magnetic field (earth), gravitational field (earth), geospatial datasets

ISO 19115 Topic Category

geoscientificInformation

Place Keywords

Kentucky, Illinois, Kansas, Arkansas, Missouri, Iowa, Indiana, Tennessee, Mississippi, Oklahoma

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

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.

Get Data and Metadata
Author(s) Jeffrey D Phillips orcid, Anne E McCafferty orcid
Publication Date 2019-07-12
Beginning Date of Data 1945
Ending Date of Data 2018
Data Contact
Anne E McCafferty
DOI https://doi.org/10.5066/P9GDWR0C
Citation Phillips, J.D., and McCafferty, A.E., 2019, Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models: Gravity and Magnetic Grids: U.S. Geological Survey data release, https://doi.org/10.5066/P9GDWR0C.
Metadata Contact
Jeffrey D Phillips
Metadata Date 2020-09-29
Related Publication
Citations of these data

Loading https://doi.org/10.1016/j.oregeorev.2019.102966

Loading https://doi.org/10.3133/OFR20191023B
Access public
License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2024-07-24T04:01:55.917Z