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  3. Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models
  4. Elevation surface grids for the southern midcontinent

Elevation surface grids for the southern midcontinent

Dates

Publication Date

Citation

Phillips, J.D., and McCafferty, A.E., 2019, Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models: U.S. Geological Survey data release, https://doi.org/10.5066/P9GDWR0C.

Summary

Regional surface elevation grid files (provided in Grid eXchange File 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 grid files (magnetic field observation surface, topographic surface, Precambrian basement surface, and Moho interface) were used to construct templates and initial physical property models for 3D inversions. A masked version of the Precambrian basement surface grid was used to remove inverted densities and magnetic susceptibilities in areas [...]

Contacts

Point of Contact :
Anne E McCafferty, Geology, Geophysics, and Geochemistry Science Center
Originator :
Jeffrey D Phillips, Anne E McCafferty
Metadata Contact :
Jeffrey D Phillips, Geology, Geophysics, and Geochemistry Science Center
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Geology, Geophysics, and Geochemistry Science Center
USGS Mission Area :
Energy and Minerals

Attached Files

Click on title to download individual files attached to this item.

CrustalArchitecture_ElevationGrids.xml
Original FGDC Metadata
View 		26.75 KB application/fgdc+xml
SurfaceMaps.jpg thumbnail 8.04 MB image/jpeg
MagObsSurf.gxf
“Magnetic field observation surface grid” 		3.14 MB application/gxf
MagObsSurfNoProj.gxf
“Magnetic field observation surface grid - no projection” 		3.14 MB application/gxf
Topography.gxf
“Topographic surface grid” 		3.14 MB application/gxf
TopographyNoProj.gxf
“Topographic surface grid - no projection” 		3.14 MB application/gxf
NewPrecambrian.gxf
“Precambrian basement surface grid” 		3.14 MB application/gxf
NewPrecambrianNoProj.gxf
“Precambrian basement surface grid - no projection” 		3.14 MB application/gxf
NewPrecambrianMasked.gxf
“Masked Precambrian basement surface grid” 		3.14 MB application/gxf
NewPrecambrianMaskedNoProj.gxf
“Masked Precambrian basement surface grid - no projection” 		3.14 MB application/gxf
MohoTopography.gxf
“Moho interface grid” 		3.14 MB application/gxf
MohoTopographyNoProj.gxf
“Moho interface grid - no projection” 		3.14 MB application/gxf
AlbersConicalEqualArea.prj
“Projection file” 		451 Bytes text/plain

Purpose

The grid files were used to study crustal architecture beneath the Southern Midcontinent (USA) related to transport of ore-forming fluids from the upper mantle to shallow-levels within the Precambrian crust.
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