First Evidence of Middle Triassic Basic Magmatism in the Southwestern Part of the Dzhugdzhur–Stanovoi Superterrane (Ilikan Terrane)


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U–Pb ID–TIMS zircon analyses of the Dzhigda gabbro–gabbrodiorite Massif (Ilikan block in the southwestern part of the Dzhugdzhur–Stanovoi superterrane) have been carried out. The results demonstrate that the formation of the massif at 244 ± 5 Ma corresponds to one of the stages of formation of the Selenga–Vitim volcano–plutonic belt. The latter stretches along the southeastern margin of the North Asian Craton along its border with the Mongol–Okhotsk fold belt. This indicates that the Selenga–Vitim volcano–plutonic belt along with granitoids and volcanics comprises Permian–Triassic massifs and that this belt is superimposed onto structures of not only the Selenga–Stanovoi terrane but also the Dzhugdzhur–Stanovoi terrane.

作者简介

I. Buchko

Institute of Geology and Nature Management, Far East Branch

编辑信件的主要联系方式.
Email: inna@ascnet.ru
俄罗斯联邦, Blagoveshchensk, Amur Region, 675000

A. Sorokin

Institute of Geology and Nature Management, Far East Branch

Email: inna@ascnet.ru
俄罗斯联邦, Blagoveshchensk, Amur Region, 675000

A. Rodionov

Institute of Geology and Nature Management, Far East Branch

Email: inna@ascnet.ru
俄罗斯联邦, Blagoveshchensk, Amur Region, 675000

N. Kudryashov

Geological Institute, Kola Research Center

Email: inna@ascnet.ru
俄罗斯联邦, Apatity, 184209

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