Database contains data from gamma-spectrometry survey. Gamma-ray spectrometry survey means measurement of natural radioactive isotopes concentration i.e. potassium 40K [%], uranium 328U and 235U [ppm], thorium 232Th [ppm]; simultaneously, total gamma-ray activity was registered. This survey started in 1976 and covered about 60 % of the territory.
Location accuracy: locations digitized from 1:25 000 and 1:200 000 scale maps
The areas covered by the gravity survey and points at which gravity measurements were made are depicted on maps.