New data on the age and geodynamic interpretation of the Kalba-Narym granitic batholith, eastern Kazakhstan

Geological and new geochronological data are summarized for the Kalba-Narym granitic batholith in eastern Kazakhstan, and their geodynamic interpretation is suggested. In the structure of the batholith, we consider (from late to early) the Kunush plagiogranitic complex, the Kalguta granodiorite-gran...

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Bibliographic Details
Published in:Doklady earth sciences 2015-06, Vol.462 (2), p.565-569
Main Authors: Kotler, P. D., Khromykh, S. V., Vladimirov, A. G., Navozov, O. V., Travin, A. V., Karavaeva, G. S., Kruk, N. N., Murzintsev, N. G.
Format: Article
Language:English
Subjects:
Carboniferous
Earth
Earth and Environmental Science
Earth Sciences
Geological time
Geology
Lithosphere
Mantle
Permian
Petrology
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Summary:Geological and new geochronological data are summarized for the Kalba-Narym granitic batholith in eastern Kazakhstan, and their geodynamic interpretation is suggested. In the structure of the batholith, we consider (from late to early) the Kunush plagiogranitic complex, the Kalguta granodiorite-granitic association, and the Kalba granitic, Monastery leucogranitic, and Kainda granitic complexes. The granitic complexes of the Kalba-Narym batholith were formed between the Carboniferous-Permian and the Early-Middle Permian (∼30 Ma). New data indicate that formation of the Kalba-Narym batholith was related to the activity of the Tarim mantle plume. Heating of the lithosphere by the plume coincided with postcollision collapse of the orogenic structure and led to the crust melting and formation of the studied granitic complexes in a relatively short period.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X15060136