Wody termalne na Niżu Polskim

Abstract

THERMAL WATERS IN THE POLISH LOWLANDSummaryHaving examined thermal waters from 60 boreholes (Table 1), the authors discuss the occurrence of these waters in the Polish Lowland or, more exactly, in theterritoryofPolandexcluding the Carpathians and theSudetes. The most valuable water-bearing horizons occur in Lower Cretaceous, Lower Jurassic and Middle Triassic deposits. Usually only one of these horizons in a given geological region has such an amount of thermal waters of a suitable degree of mineralization that it can be considered to be of practical value.Almost all thermal waters in the Polish Lowland are mineral waters, and most of them are characterized by high general mineralization. They are usually waters of the Cl-Na type. Because of a large content of salts these thermal waters cannot be used as carriers of thermal energy.Thermal waters characterized by mineralization ranging from a few to a dozen g/l occur in the Lower Cretaceous of the Lódź-Mogilno Synclinorium and in the Lower Jurassic deposits of the northern part of the Fore-Sucletic Monocline (Fig. 1, Fig. 2). Large quantities of waters of a temperature from 40 to 60° C can be obtained in these areas. These waters can be used not only for balneological purposes but also as a source of thermal energy (heating).