| Abstract |
The offered method is based on statistically significant variability of heat flow depending on the leading geologic-geographical factors. The method uses correlation of heat flow with these factors - with a genetic type and the age of geological environment, with lithology, with relief, with types of soils and landscapes, with a hydrographic network and degree of soil salinity. Maps of heat flow, constructed on the basis of this method, will help to solve a wide circle of problems: location of geothermal resources, search for hydrocarbon deposits, to increase informative geological interpretations; ; and others. The technique includes consecutive performance of several stages according to five accepted methodological principles: 1) interpreting the major factors of influence of geologic-geographical environment on a heat field of region; 2) definition of statistical averages of heat flows and correlation-regression of connections of a heat flow with a relief in areas of homogeneous geographical zones, which characterize major factors of influence; 3) drawing up a complete set of intermediate working maps constructed on the basis of mosaic mapping of region by areas with identical values of heat flow, which characterize the basic geologic-geographical factors of influence; 4) imposing against each other of intermediate working maps and estimation of reliability of drawing of configurations of heat flow isolines on a final map of geothermal field of region; 5) construction of the final map of the heat flow isolines for the region as a regional standard of background variability of heat flows near the surface. The method is illustrated by means on the example of the map of the heat flow of Daghestan (Northern Caucasus, Russia) in scale 1:500000 with the isolines at an interval of 5 mW/m2. |