Late Vendian postcollisional leucogranites of Yenisei Ridge
- Authors: Nozhkin A.D.1, Likhanov I.I.1, Reverdatto V.V.1, Bayanova T.B.2, Zinoviev S.V.1, Kozlov P.S.3, Popov N.V.4, Dmitrieva N.V.1,5
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch
- Geological Institute, Kola Science Center
- Zavaritsky Institute of Geology and Geochemistry, Ural Branch
- Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
- Novosibirsk National Research University
- Issue: Vol 474, No 2 (2017)
- Pages: 674-679
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/190063
- DOI: https://doi.org/10.1134/S1028334X17060125
- ID: 190063
Cite item
Abstract
The Late Vendian (540–550 Ma) U–Pb zircon age of postcollisional granitoids in the Osinovka Massif was obtained for the first time. The Osinovka Massif is located in rocks of the island-arc complex of the Isakovka Terrane, in the northwestern part of the Sayany–Yenisei accretion belt. These events stand for the final stage of the Neoproterozoic history of the Yenisei Ridge, related to the completing accretion of the oceanic crust fragments and the beginning of the Caledonian orogenesis. The petrogeochemical composition and the Sm–Nd isotopic characteristics support the fact that the granitoid melt originated from a highly differentiated continental crust of the southwestern margin of the Siberian Craton. Hence, the granite-bearing Late Riphean island-arc complexes were thrust over the craton margin at a distance considerably exceeding the dimensions of the Osinovka Massif.
About the authors
A. D. Nozhkin
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
I. I. Likhanov
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Author for correspondence.
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
V. V. Reverdatto
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
T. B. Bayanova
Geological Institute, Kola Science Center
Email: likh@igm.nsc.ru
Russian Federation, Apatity, 184200
S. V. Zinoviev
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
P. S. Kozlov
Zavaritsky Institute of Geology and Geochemistry, Ural Branch
Email: likh@igm.nsc.ru
Russian Federation, Yekaterinburg, 620016
N. V. Popov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
N. V. Dmitrieva
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research University
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090