Geological Structure Bogdoulinsky Granite Massif (Mongolia)
The study of the morphology of intrusive behaviors is an actual direction of modern geology. Information on the shape and size of intrusive bodies complements the information used in the development of ideas about their formation and the mechanism of penetration in the upper part of the earth's crust. The granite massif Bogdole is located in the marginal part of the Khentei highland of the Mongolian-Trans-Baikal fold system of Central Mongolia. Geochemical studies have shown that in the granitoids of the massif there is an anomalously high content of Sn, Zn and W. These data served as the basis for setting up area gravimetric studies to determine the features of its geological structure. The work was performed using gravimeters scintrex autograv CG-5 according to the standard procedure. The heights of the observation points were determined by the Trimble 5700 GPS devices. The rms accuracy of calculating the gravity anomalies and the density of the observational network correspond to the technical requirements for gravimetric surveys of a scale of 1:100 000. The correction for the relief was introduced within a radius of 200 km. Based on the results of the medium-scale area gravimetric survey performed on the territory of the Bogdulin granite massif, a map of gravity anomalies in the Bouguer reduction was obtained. Based on the interpretation of these data, a volumetric model of this body is constructed. Its power reaches 9,0 km, the area of the projection to the earth's surface is twice the area of the outlets. Information on the shape and size of the array can be used in concluding on the prospects of its metallogenic specialization, the features of which are related to the specific features of its form in relation to individual minerals and established earlier by geological, geophysical and geochemical studies.
Turutanov Evgeny Khrisanfovich, Doctor of Sciences (Geology and Mineralogy), Chief Researcher, Head, Laboratory Complex Geophysics, Institute of the Earth's Crust SB RAS, 128, Lermontov st., Irkutsk, 664033, Russian Federation, tel.: (3952) 42-87-92, e-mail: email@example.com
Buyantogtokh Bazarin, Postgraduate, Institute of the Earth's Crust SB RAS, 128, Lermontov st., Irkutsk, 664033, Russian Federation; Research Scientist, Center for Astronomy and Geophysics of MAS, PO-788, Ulaanbaatar-210613, Mongolia, tel.: 976-11-458024, e-mail: firstname.lastname@example.org
Tengis Badma, Postgraduate, Institute of the Earth's Crust SB RAS, 128, Lermontov st., Irkutsk, 664033, Russian Federation; Research Scientist, Center for Astronomy and Geophysics of MAS, PO-788, Ulaanbaatar-210613, Mongolia, tel.: 976-11-458024
Turutanov E.Kh., Buyantogtokh B., Tengis B. Geological Structure Bogdoulinsky Granite Massif (Mongolia). The Bulletin of Irkutsk State University. Series Earth Sciences, 2019, vol. 27, pp. 122-137. https://doi.org/10.26516/2073-3402.2019.27.122 (in Russian)
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