Age of overthrust-type granites in the accretionary‒collisional system of the early Caledonides (western Baikal region)


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Resumo

The western Baikal region (Ol’khon region, Nutgei zone, Kharikta area) is characterized by the development of packets of thrust-type folds and synkinematic granites corresponding to the stage of thrust deformations (overthrust-type granites). Two stages in the formation of thrust-type folds separated by episodes of granite emplacement are definable. The data obtained make it possible to estimate both the time of transition from thrust to strike-slip deformations and the duration of accretionary‒collisional events that resulted in regional strike-slip deformations, which terminated in the western Baikal region 460‒455 Ma ago.

Sobre autores

E. Mikheev

Sobolev Institute of Geology and Mineralogy, Siberian Branch; National Research Tomsk State University; Novosibirsk State University

Autor responsável pela correspondência
Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Tomsk, 634050; Novosibirsk, 630090

A. Vladimirov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; National Research Tomsk State University; Novosibirsk State University

Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Tomsk, 634050; Novosibirsk, 630090

V. Fedorovsky

Geological Institute

Email: mikheev@igm.nsc.ru
Rússia, Moscow, 119017

T. Bayanova

Geological Institute, Kola Science Center

Email: mikheev@igm.nsc.ru
Rússia, Apatity, 184209

A. Mazukabzov

Institute of the Earth’s Crust, Siberian Branch

Email: mikheev@igm.nsc.ru
Rússia, Irkutsk, 664033

A. Travin

Sobolev Institute of Geology and Mineralogy, Siberian Branch; National Research Tomsk State University

Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Tomsk, 634050

N. Volkova

Sobolev Institute of Geology and Mineralogy, Siberian Branch; National Research Tomsk State University

Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Tomsk, 634050

S. Khromykh

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Novosibirsk, 630090

V. Khlestov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: mikheev@igm.nsc.ru
Rússia, Novosibirsk, 630090; Novosibirsk, 630090

P. Tishin

National Research Tomsk State University

Email: mikheev@igm.nsc.ru
Rússia, Tomsk, 634050

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