The First Petrological Evidence for Subduction at the Western Margin of the Siberian Craton
- Authors: Likhanov I.I.1, Kozlov P.S.2, Savko K.A.3, Zinoviev S.V.2,4, Krylov A.A.1
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
- Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences
- Voronezh State University
- Novosibirsk State University
- Issue: Vol 484, No 1 (2019)
- Pages: 79-83
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/194548
- DOI: https://doi.org/10.1134/S1028334X19010124
- ID: 194548
Cite item
Abstract
The discovery of relics of glaucophane schist in high-pressure tectonites of the suture zone of Yenisei Ridge has provided evidence for a Cordillera-type convergent boundary controlled by subduction of the oceanic crust beneath the continental margin on the western side of the Siberian Craton. According to the microtextural patterns of rocks and the results of geothermobarometry, two stages of metamorphism were distinguished. The formation of high-pressure tectonites indicates the early stage in the evolution of the Paleoasian Ocean and the final stage in the Neoproterozoic history of the Yenisei Ridge including completion of the accretion–subduction processes on the western margin of the Siberian Craton.
About the authors
I. I. Likhanov
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Author for correspondence.
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk
P. S. Kozlov
Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences
Email: likh@igm.nsc.ru
Russian Federation, Yekaterinburg
K. A. Savko
Voronezh State University
Email: likh@igm.nsc.ru
Russian Federation, Voronezh
S. V. Zinoviev
Zavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences; Novosibirsk State University
Email: likh@igm.nsc.ru
Russian Federation, Yekaterinburg; Novosibirsk
A. A. Krylov
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Email: likh@igm.nsc.ru
Russian Federation, Novosibirsk