Hydrogeochemical features of water-rock interaction in Verkhnekamskiy Saliferous Basin

The hydrogeochemical features of water interaction with soluble minerals are considered in the case of salt strata in Solikamsk Depression in natural (the area of the anticipated Verchnekamskaya Hydropower Plant) and technogenically transformed (the area of Berezniki T.) environments. The preservation of rock and potash salt is shown to be possible only upon maintaining the hydrogeochemical groundwater regime that provides the stability of gypsum facially replaced by salt. The gypsum protects the latter from contact with highly aggressive groundwater and, thus, from intense dissolution.