From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was t
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),
Total magnetic intensity data measures variations in the intensity of the Earth�s magnetic filed caused by the contrasting content of rock-forming minerals in the Earth�s crust. The data are collecte
