Schematic zoning of the region of the Caspian artesian basin with respect to the formation of the chemical composition of underground waters in the upper hydro-geodynamic zone

The hydrogeochemical zoning of the region of the Caspian artesian basin was considered on the basis of the corresponding revealed parameters. The consideration was based upon the natural-historic analysis of the landscape-climatic, geological, hydrogeological, and hydrogeochemical data. The subject of the study was the upper hydrogeodynamic zone of the Caspian artesian basin.