Abstract
Spelean calcites discovered in fissures and caverns within flysch deposits at Tylicz (Polish Carpathians) have been examined isotopically together with CO 2-rich water from several springs occurring in this area. δ 13C-values of TDC and spelean calcites indicate that CaCO 3 has precipitated under conditions close to carbon isotope equilibrium, with participation of CO 2 of deep origin. Analyses of δ 18O suggest the existence of oxygen isotope disequilibrium between water and gaseous CO 2 which can be explained by the short time of contact between the CO 2 flux and the shallow groundwaters of meteoric origin.
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