Preliminary geochemical investigation of karst barre from eastern Serbia Sokobanja basin

Abstract

Karst bare is a hydrogeological phenomenon which denotes a karst terrain of limited area completely surrounded by rocks of low permeability, i.e. whose lower part is enclosed and bordered by more or less impervious rocks impeding ground water flowing out of the karst area. Sokobanja basin is one of the first localities where this kind of karst was detected. This study represents a preliminary geochemical analysis of karst bare samples from this locality. Atomic absorption spectrometric analysis shows that the studied samples are composed predominantly of Ca and contain minor amounts of Mg, probably in form of carbonate minerals obtained by dissolving with mineral acids. There are no detailed geochemical data about karst barre from this or any other locality in the available literature to date.