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WV Geology - WV Bouguer Gravity Map
From the site: "A reference map of Bouguer gravity values with axes of persistent highs and lows published by the WV Geological and Economic Survey in 1987. In May/June 2007,... -
USGS Mineral Resources: Bouguer gravity anomaly grid for the conterminous US
From the site: "Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the...