Age and tectonic position of the Stanovoi metamorphic complex in the eastern part of the Central Asian Foldbelt


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Abstract

Based on the results of Sm–Nd isotopic geochemical and U–Th–Pb geochronological LA–ICP–MS studies, it has been established that the formation of metamorphic rock protoliths of the Stanovoi Complex in the western Dzhugdzhur–Stanovoi Superterrane of the Central Asian Foldbelt took place over the following time spans: 2750–2860 Ma (Ilikan Group of the Ilikan Zone), 1890–1910 Ma (Bryanta Group of the Bryanta Zone), and ~2.0 Ga (Kupuri and Zeya groups of the Kupuri and Zeya zones, respectively). It has been shown that the western part of the Dzhugdzhur–Stanovoi Superterrane was formed ~1.9 Ga ago, as a result of collision of the Neoarchean Ilikan Terrane, the Paleoproterozoic island arc, and the Paleoproterozoic Kupuri–Zeya Terrane. The data make it possible to consider the Kurul’ta, and Zverevo blocks of the Stanovoi Structural Suture and the Ilikan Terrane of the Dzhugdzhur–Stanovoi Superterrane of the Central Asian Foldbelt as constituents of a common terrane.

About the authors

S. D. Velikoslavinskii

Institute of Precambrian Geology and Geochronology

Author for correspondence.
Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

A. B. Kotov

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

V. P. Kovach

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

E. V. Tolmacheva

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

A. A. Sorokin

Institute of Geology and Nature Management

Email: sd1949@yandex.ru
Russian Federation, per. Relochnyi 1, Blagoveshchensk, 675000

E. B. Sal’nikova

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

A. M. Larin

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

N. Yu. Zagornaya

Institute of Precambrian Geology and Geochronology

Email: sd1949@yandex.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034

K. L. Wang

Institute of Earth Sciences

Email: sd1949@yandex.ru
Taiwan, Province of China, 128 Academica Road, Nankang, Taipei, 115

S.-L. Chung

Department of Geosciences

Email: sd1949@yandex.ru
Taiwan, Province of China, 1 Roosevelt Road, Taipei City, 10617

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