MESOPROTEROZOIC BIMODAL MAGMATISM OF THE ULUTAU TERRANE OF CENTRAL KAZAKHSTAN
- Authors: Tretyakov A.A.1, Degtyarev K.E.1, Kanygina N.A.1, Fedorov B.V.2
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Affiliations:
- Geological Institute, Russian Academy of Sciences
- Sergo Ordzhonikidze Russian State University for Geological Prospecting
- Issue: Vol 508, No 1 (2023)
- Pages: 5-13
- Section: GEOLOGY
- Submitted: 30.01.2025
- Published: 01.01.2023
- URL: https://rjdentistry.com/2686-7397/article/view/649738
- DOI: https://doi.org/10.31857/S2686739722601570
- EDN: https://elibrary.ru/GANHPZ
- ID: 649738
Cite item
Abstract
In the southern part of the Ulutau terrane (Central Kazakhstan), a complex of volcanogenic rocks of basalt-rhyolite composition of the Zhiide series has been studied. Based on the U–Pb (SIMS) geochronological study of accessory zircons, an estimate of the age of rhyolites was obtained for the first time – 1338 ± 5 million years, which corresponds to the first half of the Ectasia period of the Mesoproterozoic. The features of the composition of the basic and acidic effusions indicate their formation in the context of continental rifting caused by the activity of the mantle plume.
Keywords
About the authors
A. A. Tretyakov
Geological Institute, Russian Academy of Sciences
Author for correspondence.
Email: and8486@yandex.ru
Russian, Moscow
K. E. Degtyarev
Geological Institute, Russian Academy of Sciences
Email: and8486@yandex.ru
Russian, Moscow
N. A. Kanygina
Geological Institute, Russian Academy of Sciences
Email: and8486@yandex.ru
Russian, Moscow
B. V. Fedorov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Email: and8486@yandex.ru
Russian, Moscow
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