Granitoids of the Pozdnestanovoy Complex of the Dzhugdzhur–Stanovoy Superterrane, Central Asia Fold Belt: Age, Tectonic Setting, and Sources

A. M. Larin; A. B. Kotov; E. B. Sal’nikova; V. P. Kovach; G. V. Ovchinnikova; V. M. Savatenkov; S. D. Velikoslavinskii; A. A. Sorokin; I. M. Vasil’eva; N. A. Sergeeva; N. N. Mel’nikov; K.-L. Wang; S.-L. Chun

doi:10.1134/S0869591118050041

Granitoids of the Pozdnestanovoy Complex of the Dzhugdzhur–Stanovoy Superterrane, Central Asia Fold Belt: Age, Tectonic Setting, and Sources

作者: 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
隶属关系:
1. Institute of Precambrian Geology and Geochronology
2. Institute of Earth Sciences
3. Institute of Geology and Nature Management, Far Eastern Branch
4. Department of Geosciences
期: 卷 26, 编号 5 (2018)
页面: 447-468
栏目: Article
URL: https://journals.rcsi.science/0869-5911/article/view/177618
DOI: https://doi.org/10.1134/S0869591118050041
ID: 177618

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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.

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granitoid, geodynamic setting, source, continental crust, collision, geochronology, isotope geochemistry, petrogenesis, crust formation, adakite, Mongolia–Okhotsk Ocean, Central Asia fold belt, Siberian craton

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Granitoids of the Pozdnestanovoy Complex of the Dzhugdzhur–Stanovoy Superterrane, Central Asia Fold Belt: Age, Tectonic Setting, and Sources

全文:

详细

关键词

作者简介

A. Larin

A. Kotov

E. Sal’nikova

V. Kovach

G. Ovchinnikova

V. Savatenkov

S. Velikoslavinskii

A. Sorokin

I. Vasil’eva

N. Sergeeva

N. Mel’nikov

K.-L. Wang

S.-L. Chun

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