Idaho Batholith Study Area Bouguer Gravity Grid

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A 2 kilometer Bouguer gravity anomaly grid for the Idaho batholith study area. Number of columns is 331 and number of rows is 285. The order of the data is from the lower left to the right and then up one row.

Idaho Batholith Study Area Density Grid

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A 2 kilometer terrace-density grid for the Idaho batholith study area. Number of columns is 331 and number of rows is 285. The order of the data is from the lower left to the right and then up one row.

Idaho Batholith Study Area Gravity Data

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The gravity station data (32,152 records) were compiled by the U. S. Geological Survey. This data base was received on February 23, 1993. Principal gravity parameters include observed gravity, Free-air anomalies and Bouguer anomalies. The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula.

Bouguer Gravity Grid for Idaho

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A 2.5 kilometer Bouguer anomaly grid for the state of Idaho. Number of columns is 215 and number of rows is 320. The order of the data is from the lower left to the right and then up one row.

U.S. Isostatic Residual Gravity Grid

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isores.bin - standard grid containing isostatic residual gravity map for U.S. Grid interval = 4 km. Projection is Albers (central meridian = 96 degrees West; base latitude = 0 degrees North). Sea level depth of compensation = 30.0 km, density contrast at depth = 0.35 g/cm^^3. Values are in milligals.

Utah Bouguer Gravity Grid

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A 2.5 kilometer Bouguer anomaly grid for the state of Utah. Number of columns is 196 and number of rows is 245. The order of the data is from the lower left to the right and then up one row.

Ohio Bouguer Gravity Grid

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A 2 kilometer Bouguer anomaly grid for the state of Ohio. Number of columns is 187 and number of rows is 217. The order of the data is from the lower left to the right and then up one row.

Maine Bouguer Gravity Grid

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A 2 kilometer Bouguer anomaly grid for the state of Maine. Number of columns is 197 and number of rows is 292. The order of the data is from the lower left to the right and then up one row.

2.5-min Isostatic Gravity Grid for the United States

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The 2.5-min isostatic gravity data set was produced by regridding the 4-km residual isostatic gravity grid of the U.S. The isostatic residual gravity grid was developed by the U.S. Geological Survey using an Airy Heiskanen model. Local compensation was computed with a depth of 30.0 km to the root for sites with sea level elevations and a density contrast of 0.35 g/cm3 across the bottom of the root.

Minnesota Bouguer Anomaly Grid

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A 1.5 kilometer Bouguer anomaly grid for the state of Minnesota. Number of columns is 404 and number of rows is 463. The order of the data is from the lower left to the right and then up one row.