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Provides data for the depth below the land surface,in meters, of the modeled location of the Pre-Tertiary basement surface.
Flight-line data, flight-line and aeromagnetic anomaly map images
Measurements indicating abundance of radioactive elements in near-surface rocks. Grids and flight-line data from surveys flown 1976-1980.
Aeromagnetic surveys of South Carolina, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Includes detailed point measurements of gravity
Helicopter electromagnetic data from Everglades National Park and surrounding areas, Florida, collected 9-14 December 1994
Survey to determine location of the freshwater-saltwater boundary in a coastal area.
MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.
Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units. Covers the conterminous United States, southeaste
Digital Aeromagnetic Datasets for the Conterminous United States and Hawaii - A Companion to the North American Magnetic Anomaly Map
Digital and analog archives comprising more than 1,000 surveys, covering approximately 8,000,000 line-km of data, flown at various flight heights and line spacings
Basic aeromagnetic data and other airborne survey information for any region of Alaska. Flight-line point information, not grids.
Grid data files along with maps in PDF and PostScript accompany this report