Stable isotope composition of spelean calcites and gaseous CO2 from Tylicz (Polish Carpathians)

Spelean calcites discovered in fissures and caverns within flysch deposits at Tylicz (Polish Carpathians) have been examined isotopically together with CO2-rich water from several springs occurring in this area. δ13C-values of TDC and spelean calcites indicate that CaCO3 has precipitated under conditions close to carbon isotope equilibrium, with participation of CO2 of deep origin. Analyses of δ18O suggest the existence of oxygen isotope disequilibrium between water and gaseous CO2 which can be explained by the short time of contact between the CO2 flux and the shallow groundwaters of meteoric origin.