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This paper presents the results of magnetotelluric (MT) studies performed within the Western Transbaikalia segment of the Central Asian fold belt along the Selenga River delta-Krasnyi Chikoi Village profile. The data are interpreted using the results of recent geological, petrological, geothermal, tectonic, and geochronological studies of the Mongolia-Transbaikalian part of the Central Asian fold belt, including large heterochronous provinces and zones. The studies have shown that the investigated area has a complex geologic and tectonic structure produced by extensive rifting leading to the formation of large crustal blocks and by intense magmatic fluid activity along deep fault zones. The investigated by a combination of blocks with different types of geoelectric section – mountain range and intermontane basins separated by long-lived deep fault zones. Significantly less tectonic activity of the West Transbaikalian rift zone, compared with the Baikal region of modern rift formation, was reflected in the contrast of the resistivity distribution and heat flow values in the North-Western and South-Eastern parts of the studied profile. |
