KSZTAŁTOWANIE SIĘ CHEMIZMU WÓD GIPSOWEJ JASKINI ZOŁUSZKA (UKRAINA, MOŁDAWIA)

Abstract

CHEMISTRY FORMATION OF THE WATER IN THE ZOLOUSHKA GYPSUM CAVE (UKRAINE, MOLDOVA)

Abstract. The paper presents the results of the research of the Badenian gypsum karst hydrogeochemical environment in the area of the Zoloushka cave in Ukraine. The investigations were carried out in June 2008 with the main aim of determining mechanism of cave lake waters chemistry. It has been found that the chemical mechanism of these waters is formed in a transitional hydrogeochemical environment. On the basis of the results of a hydrogeochemical numerical model, some of the features such as the distribution of elements, molar concentrations and main speciation as well as saturation indices (SI) for the chosen mineral phases were calculated. The chemical mechanism of the water was balanced with concentrations of O₂ and CO₂ present in the air of the cave. The results of hydrogeochemical investigations and modeling show a clear hydrochemical zonation within the described hydrogeological complex drained by the quarry. This is related to the geological structure, flow conditions and the cave microclimate. Spatial anomalies connected with the increased upward flow from the Cretaceous aquifer have been distinguished.