Wody termalne w niecce mogileńsko-łódzkiej
Abstract
THERMAL WATERS OF THE MOGILNO-ŁÓDŹ BASIN
Summary
The Mogilno-Łódź Basin, situated in central part of Poland, is one of the most perspective areas of occurrence of thermal waters. The most advantageous for exploitation of these waters were found in the Lower Cretaceous (Barremian- Midd1e Albian), mainly represented by sandstones and sands. These rocks form typical basin. Waters occurring here are varying in temperature and mineralization. Temperature of rocks and waters Occurring in them ranges from 30° to 80°C in the most perspective, eastern part of the basin. Temperature of water at the out flow from a well depends on temperature in deposit and velocity of flow in the well. Several wells gave water with temperature up to 67°C. The output of wells usually ranges from 50 to 100 m3/h.
The thermal waters belong to the chlorine-sodium type, with mineralization ranging from l to over 35 g/dm3. The most interesting ones, with mineralization below 10 g/dm3, represent a marked part of the total resources of the thermal waters. The paper gives some results of preliminary evaluations of regional resources of these waters and the most perspective areas of occurrence of the thermal waters are shown. Thermal waters of the Mogilno-Łódź Basin may be used for the purposes of balneology, recreation and heating. The Geological Institute drillings Koło IG3 1and Uniejów IGH-1 have not been closed which makes it possible to exploit water with temperature 60°-67°C, mineralization of the order of a few g/dm3 and output (self-outflow) 65 to 80 m3/h.
Summary
The Mogilno-Łódź Basin, situated in central part of Poland, is one of the most perspective areas of occurrence of thermal waters. The most advantageous for exploitation of these waters were found in the Lower Cretaceous (Barremian- Midd1e Albian), mainly represented by sandstones and sands. These rocks form typical basin. Waters occurring here are varying in temperature and mineralization. Temperature of rocks and waters Occurring in them ranges from 30° to 80°C in the most perspective, eastern part of the basin. Temperature of water at the out flow from a well depends on temperature in deposit and velocity of flow in the well. Several wells gave water with temperature up to 67°C. The output of wells usually ranges from 50 to 100 m3/h.
The thermal waters belong to the chlorine-sodium type, with mineralization ranging from l to over 35 g/dm3. The most interesting ones, with mineralization below 10 g/dm3, represent a marked part of the total resources of the thermal waters. The paper gives some results of preliminary evaluations of regional resources of these waters and the most perspective areas of occurrence of the thermal waters are shown. Thermal waters of the Mogilno-Łódź Basin may be used for the purposes of balneology, recreation and heating. The Geological Institute drillings Koło IG3 1and Uniejów IGH-1 have not been closed which makes it possible to exploit water with temperature 60°-67°C, mineralization of the order of a few g/dm3 and output (self-outflow) 65 to 80 m3/h.