On the geothermal regime of some tectonic units in Romania |
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| Authors: | Cri?an Demetrescu |
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| Institution: | (1) Institute for Earth's Physics and Seismology, Bucure ti-M gurele, Sector 6, PO Box 5202, Bucreti, Romania |
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| Abstract: | Heat flow values of 33–58 mW m–2 were found for the Transylvanian Depression, 45–57 mW m–2 for the crystalline nucleus of the Eastern Carpathians, and 70–120 mW m–2 for the Neogene volcanic area. Temperature-depth profile and some geophysical implications of the low values for the Transylvanian Depression are discussed, rendering evident clear-cut differences between this tectonic unit and other Noegene depressions. The heat flow values for the other two investigated tectonic units are usual ones for areas of their age.A preliminary map of the heat flow distribution over the Romanian territory is presented and its relation to other geophysical fields is discussed. A positive correlation was found between gravity and heat flow, and a negative one between crustal thickness and heat flow. A general conclusion could be drawn that the heat flow distribution over the Romanian territory seems to be governed by processes taking place in the upper mantle, rather than by the radioactive decay within the crust. |
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| Keywords: | Heat flow Temperature-depth profiles Crustal thickness Gravity anomalies Thermal conductivity of sediments |
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