EVALUATION OF ORIGIN OF THEAYA ? -BEYPAZARI GEOTHERMAL WATERSWITH SULFUR ISOTOPES,CENTRAL ANATOLIA, TURKEY

摘要

The aim of this study is to investigate the origin of sulfate in deeply circulatingthermal waters around the Aya ? -Beypazar? region in Turkey. The waters of Aya ? resortsand ?oban bath are of Na-Cl-SO4 hydrochemical facies and waters of Kapullu andDutlu thermal resorts are represented with Na-SO4 -Cl hydrochemical facies. KirmirFormation gypsum minerals in Mio-Pliocene age have sulfur-34 isotopes between 17and 25‰. According to oxygen-18 (SO4) and sulfur-34 (SO4) contents, sulfate in watersof Aya ? and Dutlu resorts and ?oban bath is derived from gypsum of Kirmir Formationof primary source. Sulfates of Kapullu bath water and Karakoca mineral water maybe originated from atmospheric and terrestrial environments, respectively. Among thecold groundwaters, sulfate of Tahirler fountain is derived from gypsum in the KirmirFormation (primary source) and sulfate in Kapullu cold water is originated from asecondary origin (atmospheric). Sakarya River water sulfate is probable originatedfrom atmospheric and terrestrial environments.