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Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
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Cell maps for each oil and gas play were created by the USGS as a method for illustrating the degree of exploration, type of production, and distribution of production in a play or province. Each cell represents a quarter-mile square of the land surface, and the cells are coded to represent whether the wells included within the cell are predominantly oil-producing, gas-producing, both oil and gas-producing, or dry. The well information was initially retrieved from the Petroleum Information (PI) Well History Control System (WHCS), which is a proprietary, commercial database containing information for most oil and gas wells in the U.S. Cells were developed as a graphic solution to overcome the problem of displaying...


    map background search result map search result map 1995 National Oil and Gas Assessment 1/4-Mile Cells within the San Joaquin Basin Province Aeromagnetic data for Tioga Lake, California Aeromagnetic data for Tioga Lake, California 1995 National Oil and Gas Assessment 1/4-Mile Cells within the San Joaquin Basin Province