Conjugation with the Central Asian Foldbelt: Interpretation of the 3DV and Tynda–Amurzet Transects


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Abstract

In this paper we consider the results of geological interpretation of 3DV (Tommot–Skovorodino segment) and Tynda–Amurzet geophysical transects crosscutting the Aldan Shield and the Stanovoi Granite–Greenstone Domain of the Siberian Platform; the Selengino–Stanovoi, Mongolia–Okhotsk, and Gobi–Hinggang foldbelts; and the Argun and Mamyn microcontinents with a total extent of sections of about 1000 km and depth of about 40 km. The data of previous studies and follow-up electric conductivity information have been used. The data of geological mapping, subject studies, and insights into the deep-seated structure of the considered territory obtained with a complex of geophysical methods are discussed. It is shown that Mesozoic strike-slip and thrust faults play the leading role in the present-day structure of the territory and in control rifting and mantle diapirism. It is suggested that Californian-type metamorphic nuclei, which are of structure-forming significance for adjacent territories in the west, have also developed in the studied region.

About the authors

T. N. Kheraskova

Geological Institute

Author for correspondence.
Email: kheraskova@ginras.ru
Russian Federation, Moscow, 119017

D. V. Yakovlev

OOO Severo-Zapad

Email: kheraskova@ginras.ru
Russian Federation, Moscow, 117545

N. N. Pimanova

Rosgeolfond, All-Russia Research Institute of Geosystems

Email: kheraskova@ginras.ru
Russian Federation, Moscow, 117545

O. S. Berezner

Museum of Natural History

Email: kheraskova@ginras.ru
Russian Federation, Moscow, 119991

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