The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K),
This rSA0700_A2k.nc grid includes airborne-derived Radiometric Potassium data for the SA Exploration Initiative - Area A (A1-A7), SA., 1993 survey acquired for the geological survey of SA