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  1. National-Scale Geophysical, Geologic, and Mineral Resource Data and Grids for the United States, Canada, and Australia: Data in Support of the Tri-National Critical Minerals Mapping Initiative
  2. [Geophysical Data] Gravity and related derivative GeoTIFF grids and data for Australia

[Geophysical Data] Gravity and related derivative GeoTIFF grids and data for Australia

Dates

Publication Date
Time Period
2019-06-15

Citation

McCafferty, A.E., San Juan, C.A., Lawley, C.J.M., Graham, G.E., Gadd, M.G., Huston, D.L., Kelley, K.D., Paradis, S., Peter, J.M., and Czarnota, K., 2023, National-scale geophysical, geologic, and mineral resource data and grids for the United States, Canada, and Australia: Data in support of the tri-national Critical Minerals Mapping Initiative: U.S. Geological Survey data release, https://doi.org/10.5066/P970GDD5.

Summary

Several evidential layers calculated from the national-scale gravity anomaly map of Australia (Geophysical Acquisition and Processing Section, 2020) are provided here. This directory includes GeoTIFF grids of Bouguer gravity, the horizontal gradient magnitude of the Bouguer gravity, the Bouguer gravity upward continued 30 km, and the horizontal gradient magnitude of the upward continued gravity, The directory also includes shapefiles of locations that trace the maxima of the horizontal gradient magnitude of the gravity and of the maxima of the horizontal gradient magnitude of the upward continued gravity. Otherwise known as “worms”, the points tracking the maxima mark the edges of shallow density sources (in the case of the Bouguer [...]

Contacts

Point of Contact :
Anne E McCafferty
Originator :
Anne E McCafferty
Metadata Contact :
Anne E McCafferty, GS GGGSC DM Team
Publisher :
U.S. Geological Survey
USGS Mission Area :
Energy and Minerals
USGS Program :
Mineral Resources Program
SDC Data Owner :
Geology, Geophysics, and Geochemistry Science Center
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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

GeophysicsGravity_Australia.xml
“FGDC metadata”
Original FGDC Metadata
View 		27.08 KB application/fgdc+xml
GeophysicsGravity_Australia.zip
“GeoTIFF of Bouguer gravity-Australia” 		83.44 MB application/zip
GeophysicsGravity_HGM_Australia.zip
“GeoTIFF of HGM of Bouguer gravity- Australia” 		92.14 MB application/zip
GeophysicsGravity_UpCont30km_Australia.zip
“GeoTIFF of Bouguer gravity upward continued-Australia” 		77.41 MB application/zip
GeophysicsGravity_UpCont30km_HGM_Australia.zip
“GeoTIFF of HGM Bouguer gravity upward continued-Australia” 		80.28 MB application/zip
GeophysicsGravity_Australia.jpg
“Map of Bouguer gravity-Australia” 		thumbnail 6.23 MB image/jpeg
GeophysicsGravity_HGM_Australia.jpg
“Map of HGM of Bouguer gravity-Australia” 		thumbnail 14.87 MB image/jpeg
GeophysicsGravity_UpCont30km_Australia.jpg
“Map of upward cont Bouguer gravity-Australia” 		thumbnail 2.97 MB image/jpeg
GeophysicsGravity_UpCont30km_HGM_Australia.jpg
“Map of HGM upward cont Bouguer gravity-Australia” 		thumbnail 5.01 MB image/jpeg
GeophysicsGravity_UpCont30km_Worms_Australia.jpg
“Map of upward cont gravity 'worms'-Australia” 		thumbnail 6.53 MB image/jpeg
GeophysicsGravity_Worms_Australia.jpg
“Map of gravity 'worms'-Australia” 		thumbnail 14.52 MB image/jpeg
ShallowGravitySources_Worms_Australia.zip
“Shapefile of HGM maxima of Bouguer gravity, Australia” 		87.41 MB application/zip
DeepGravitySources_Worms_Australia.zip
“Shapefile of HGM maxima of up cont Bouguer gravity, Australia” 		2.09 MB application/zip

Purpose

The GeoTIFF grids and shapefiles of the gravity data and derivative products for Australia were used as evidential layers in mineral prospectivity models for predicting sedimentary-hosted Pb-Zn mineralization described in Lawley and others (2021). This effort was part of a tri-national collaboration between the federal geological surveys of the United States (USGS), Canada (Canadian Geological Survey), and Australia (Geoscience Australia) called the Critical Mineral Mapping Initiative. References Lawley, C.J.M., McCafferty, A.E., Graham, G.E., Gadd, M.G., Huston, D.L., Kelley, K.D., Paradis, S., Peter, J.M., and Czarnota, K., 2021, Datasets to support prospectivity modelling for sediment-hosted Zn-Pb mineral systems: Natural Resources Canada Open File 8836, https://doi.org/10.4095/329203.
Map of Bouguer gravity-Australia
Map of Bouguer gravity-Australia

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