Email this article Granitoids of the Pozdnestanovoy Complex of the Dzhugdzhur–Stanovoy Superterrane, Central Asia Fold Belt: Age, Tectonic Setting, and Sources
- Authors: Larin A.M.1, Kotov A.B.1, Sal’nikova E.B.1, Kovach V.P.1, Ovchinnikova G.V.1, Savatenkov V.M.1,2, Velikoslavinskii S.D.1, Sorokin A.A.3, Vasil’eva I.M.1, Sergeeva N.A.1, Mel’nikov N.N.1, Wang K.2, Chun S.4
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Affiliations:
- Institute of Precambrian Geology and Geochronology
- Institute of Earth Sciences
- Institute of Geology and Nature Management, Far Eastern Branch
- Department of Geosciences
- Issue: Vol 26, No 5 (2018)
- Pages: 447-468
- Section: Article
- URL: https://journals.rcsi.science/0869-5911/article/view/177618
- DOI: https://doi.org/10.1134/S0869591118050041
- ID: 177618
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Abstract
The geochemistry, geochronology, and isotope geochemical systematics (Nd, Sr, Hf, and Pb) of the granitoids of the Pozdnestanovoy complex of the Dzhugdzhur–Stanovoy superterrane of the Central Asia fold belt were investigated. It was shown that their age is Mesozoic (142–138 Ma) rather than Early Precambrian, as was previously supposed. The main sources of parental melts for these granitoids were the Neoarchean and Paleoproterozoic rocks of the lower continental crust of the Dzhugdzhur–Stanovoy superterrane and the rocks of the Late Paleozoic–Early Mesozoic continental crust of the Amur microplate. They were formed at depths of >40 km and temperatures of 700–800°C, most likely through the melting of mafic feldspar granulites under the conditions of aqueous fluid infiltration without any significant contribution from a juvenile heat source. The granitoids of the Pozdnestanovoy complex were emplaced during the closure of the eastern segment of the Mongolia–Okhotsk Ocean owing to the collision of the Siberian and Sino-Korean continents.
About the authors
A. M. Larin
Institute of Precambrian Geology and Geochronology
Author for correspondence.
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
A. B. Kotov
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
E. B. Sal’nikova
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
V. P. Kovach
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
G. V. Ovchinnikova
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
V. M. Savatenkov
Institute of Precambrian Geology and Geochronology; Institute of Earth Sciences
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199034
S. D. Velikoslavinskii
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
A. A. Sorokin
Institute of Geology and Nature Management, Far Eastern Branch
Email: larin7250@mail.ru
Russian Federation, Blagoveshchensk, 675000
I. M. Vasil’eva
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
N. A. Sergeeva
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
N. N. Mel’nikov
Institute of Precambrian Geology and Geochronology
Email: larin7250@mail.ru
Russian Federation, St. Petersburg, 199034
K.-L. Wang
Institute of Earth Sciences
Email: larin7250@mail.ru
Taiwan, Province of China, Taipei, 11529
S.-L. Chun
Department of Geosciences
Email: larin7250@mail.ru
Taiwan, Province of China, Taipei, 106
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