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USGS Mineral Resources: Magnetic anomaly maps and data for North America
From the site: "Airborne measurement of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth... -
An overview of Some Key Factors Controlling Well Productivity in Core Areas o...
The Middle Devonian Marcellus Shale is one of the premier gas shale plays of North America in terms of total gas resource, extent, production rates, and economic potential. The... -
USGS Mineral Resources: Aeroradiometric Surveys of North America
From the site: "Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium,...