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Геодинамика и тектонофизика

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LATE MESOZOIC GRANITOIDS OF THE WESTERN TRANSBAIKALIA (RUSSIA) AND THEIR RELATION TO FORMATION OF METAMORPHIC CORE COMPLEXES

https://doi.org/10.5800/GT-2017-8-3-0260

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Аннотация

Early Cretaceous metamorphic core complexes (MCCs) are widespread in North-East Asia and indicate a large-scale crustal extension in this area [Wang et al., 2011, 2012]. Traditionally one of the formation mechanisms of MCCs is related to various magmatic activities including granitoid magmatism [Anderson et al., 1988, Hill et al., 1995; Lister, Baldwin, 1993]. Wang et al. [2012] have subdivided the intrusion associated with MCCs in NE Asia into pre-kinematic (~170–140 Ma), syn-kinematic (~150–125 Ma) and post-kinematic (~125–110 Ma). 40Ar/39Ar biotite and hornblende ages of 140–110 Ma are overlapping for all MCCs of NE Asia and represent the time of the final stage of the MCCs formation [Wang et al., 2012]. Here, we present overview of geochronological and geochemical data for Late Mesozoic granitoids of the Western Transbaikalia and our view on their role in formation of Transbaikalian MCCs.

Об авторах

T. V. Donskaya
Institute of the Earth’s Crust, Siberian Branch of RAS
Россия
Irkutsk


D. P. Gladkochub
Institute of the Earth’s Crust, Siberian Branch of RAS
Россия
Irkutsk


A. M. Mazukabzov
Institute of the Earth’s Crust, Siberian Branch of RAS
Россия
Irkutsk


T. Wang
Institute of Geology, Chinese Academy of Geological Sciences; Beijing SHRIMP Center, Chinese Academy of Geological Sciences
Китай
Beijing


Список литературы

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2. Donskaya Т.V., Gladkochub D.P., Mazukabzov A.M., Ivanov A.V., 2013. Late Paleozoic – Mesozoic subduction-related magmatism at the southern margin of the Siberian continent and the 150 million-year history of the MongolOkhotsk ocean. Journal of Asian Earth Sciences 62, 79–97. https://doi.org/10.1016/j.jseaes.2012.07.023.

3. Donskaya T.V., Gladkochub D.P., Mazukabzov A.M., Wang T., Guo L., Rodionov N.V., Demonterova E.I., 2016. Mesozoic granitoids in the structure of the Bezymyannyi metamorphic-core complex (Western Transbaikalia). Russian Geology and Geophysics 57 (11), 1591–1605. https://doi.org/10.1016/j.rgg.2016.10.005.

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Для цитирования:


Donskaya T.V., Gladkochub D.P., Mazukabzov A.M., Wang T. LATE MESOZOIC GRANITOIDS OF THE WESTERN TRANSBAIKALIA (RUSSIA) AND THEIR RELATION TO FORMATION OF METAMORPHIC CORE COMPLEXES. Геодинамика и тектонофизика. 2017;8(3):451-453. https://doi.org/10.5800/GT-2017-8-3-0260

For citation:


Donskaya T.V., Gladkochub D.P., Mazukabzov A.M., Wang T. LATE MESOZOIC GRANITOIDS OF THE WESTERN TRANSBAIKALIA (RUSSIA) AND THEIR RELATION TO FORMATION OF METAMORPHIC CORE COMPLEXES. Geodynamics & Tectonophysics. 2017;8(3):451-453. https://doi.org/10.5800/GT-2017-8-3-0260

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