THE ISOTOPIC COMPOSITION OF GROUNDWATER FROM THE PERMIAN DEPOSITS IN THE SOUTHERN TIMAN AND ADJACENT AREA
New data on the isotopic composition of fresh and mineral waters from the Permian deposits of the Timan and adjacent area are presented. The results of comparative analysis of the isotope and geochemical parameters describe that the waters of this sophisticated were formed in the continental and marine environments. Fresh underground waters are characterized by low values of stable isotopes of oxygen-18 and deuterium (from -20,9 to -13,7 96o and from -124 to -102.3 99o, respectively) which are equal to modern meteoric waters. For mineral waters the following values were obtained: <sup>18</sup>O (from -14 to-10.999o) and SD (from -100.4 to -81 99o