The State of the Lithosphere in the Junction Zone of Tarim
and Tien Shan According to the Petrological Interpretation
of the Magnetotelluric Data

V. Yu. Batalev and E. A. Bataleva

Research Station of the Russian Academy of Sciences, Bishkek, Kyrgyzstan

e-mail: batalev@gdirc.ru

Received May 21, 2012

Abstract—The geological–geophysical and petrological–geochemical studies of the Earth’s crust and upper
mantle are combined to estimate the state of the lithosphere at the junction zone of Tarim and Tien Shan. The
laboratory measurements of electric conductivity in the rocks sampled from the upper mantle and lower crust
considered against the geoelectrical and thermal models revealed lherzolite, granulite, and eclogite massifs in
the deep section of the Tarim and Tien Shan junction zone. The experimental results suggest that the crustal
thickness in the southern Tien Shan attained 35–40 km 70 Ma ago.

DOI: 10.1134/S1069351313030026

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