Mygdonia basin (N. Greece) in the view of isotope geochemistry

Stable isotope values of cold water samples ranged from -10.3%o to -7.3%o, from -70.4%o to -45.7%o and from -13.6%o to -10.2%o for delta18O, deltaD and delta13C respectively reflecting the isotopic signature of local precipitation water. Isotopic mapping of groundwater indicates no evidence of any mixing process with waters of different isotopic composition or evaporation process. More over isotopic interaction with the geological environment is not evident. Groundwater, which circulate in metamorphic rocks discharged in loose formations of the basin supporting their hydraulic communication.