Geothermal data on bolgarii. A thermal field and tectonic elements

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On cards of temperatures and the geothermal gradient, 500 m constructed for depth, are observed rather important tendencies in results of field measurements of a thermal field in Bulgaria.

In northern Bulgaria the highest values of thermal characteristics the northwest part of the Mizijsky plate (an isoline 4 °/100 has m on a card of a gradient and an isoline 35 ° on a temperature card). This law is marked at all levels - 500, 1000, 1500 and 2000 m. Such feature of a thermal field is caused, possibly, presence of a wide zone with a powerful complex of sedimentary breeds. Thanks to base immersing to the West these breeds can play also a role of thermal accumulators because of bolshej capacities glin in comparison with central and east parts of a plate. From the West the temperature and a gradient decrease for the east. Around a raising of northern part of the Bulgarian range hydro-geological effects lead bolshemu to fall of thermal characteristics and, hence, to reduction of a thermal stream.