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.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
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identifier USGS:5cf14f94e4b056af3664e806
metadata_type geospatial
modified 20200929
old-spatial -96.6084, 33.2204, -85.2028, 42.0396
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 305783be93bf204f7affa0d555ff11dd8d981b70
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]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • aeromagnetic-surveying
  • amerigeo
  • amerigeoss
  • arkansas
  • bouguer-anomaly
  • bulk-density
  • ckan
  • crust-earth
  • geo
  • geophysics
  • geoscientificinformation
  • geospatial-datasets
  • geoss
  • gravimeter-measurement
  • gravimetric-methods
  • gravitational-field-earth
  • illinois
  • indiana
  • iowa
  • kansas
  • kentucky
  • magnetic-field-earth
  • magnetic-susceptibility
  • magnetic-susceptibility-analysis
  • magnetometer-measurement
  • mississippi
  • missouri
  • national
  • north-america
  • oklahoma
  • scientific-interpretation
  • tennessee
  • topography
  • united-states
  • usgs-5cf14f94e4b056af3664e806
isopen False
license_id notspecified
license_title License not specified
maintainer Anne E McCafferty
maintainer_email anne@usgs.gov
metadata_created 2025-11-22T13:12:55.025678
metadata_modified 2025-11-22T13:12:55.025683
notes 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.
num_resources 2
num_tags 35
title Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models: Gravity and Magnetic Grids