GEOCHEMISTRY OF THE CARBON AND OXYGEN ISO TOPES OF THE CARBONATE MATTER IN THE SALTBEARING BASINS BY THE EXAMPLE OF THE PRIPYAT TROUGH

The carbon and oxygen isotopic composition of accessory calcite and do lomite from salt rocks and intrasalt carbonate layers in the Upper Fra snian and Upper Famenian evaporite formations of the Pripyat' trough w as studied. A wide range of delta(13)C, delta(18)O variations were est ablished, (-17.5 divided by +1.4 parts per thousand) and (+15.7 divide d by +36.4 parts per thousand) correspondingly,The carbonate matter wi th the revealed combination of delta(13)C and delta(18)O could be form ed during the sedimentation and diagenetic stages on sabkhas, subaeral ly exposed islands, on evaporite depression slopes washed by sea and f resh water and in stagnant zones with hot brines.