Aeroradiometric surveying

Mapping of gamma radiation from the earth's surface with airborne scintillation meters or gamma-ray spectrometers.
This category is also used for gamma-ray spectrometric surveying.
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Gamma-ray, Magnetic, and Topographic Data for the Colorado Front Range

The grid files presented here are in ASCII format that uses the definitions of the grid exchange format (GXF). The files can be viewed using a suitable word processing program. The different grids are: >Kfrco.gxf potassium concentrations in the rocks