PŘIROZENÁ RADIOAKTIVITA HORNINOVÉHO PROSTŘEDÍ SPELEOTERAPEUTICKÉ LÉČEBNY V SLOUPSKO-ŠOŠŮVSKÝCH JESKYNÍCH (MORAVSKÝ KRAS)

Concentrations of natural radioactive elements (K, U, Th) were measured in Devonian limestones, sinters, cave soils and fluvial cave sediments in the speleotherapy medical facility in the Sloupsko-šošůvské Caves using a field gamma-ray spectrometer. In Devonian limestones, K ranges from 0 to 2.1 %, U from 0 to 5.1 ppm and Th from 0 to 12.2 ppm. Relatively high values of K (0.7 - 3.9 %), U (1.3 - 7.1 ppm) and Th (2.6 - 18.0 ppm) were found in cave soils and cave fluvial sediments. Sinters have low contents of K (0 - 1.1 %), U (1.1 - 3.0 ppm) and Th (0 - 3.6 ppm)