MESOPROTEROZOIC BIMODAL MAGMATISM OF THE ULUTAU TERRANE OF CENTRAL KAZAKHSTAN

A. A. Tretyakov; Третьяков А. А.; K. E. Degtyarev; Дегтярев К. Е.; N. A. Kanygina; Каныгина Н. А.; B. V. Fedorov; Федоров Б. В.

doi:10.31857/S2686739722601570

MESOPROTEROZOIC BIMODAL MAGMATISM OF THE ULUTAU TERRANE OF CENTRAL KAZAKHSTAN

作者: Tretyakov A.A.¹, Degtyarev K.E.¹, Kanygina N.A.¹, Fedorov B.V.²
隶属关系:
1. Geological Institute, Russian Academy of Sciences
2. Sergo Ordzhonikidze Russian State University for Geological Prospecting
期: 卷 508, 编号 1 (2023)
页面: 5-13
栏目: GEOLOGY
##submission.dateSubmitted##: 30.01.2025
##submission.datePublished##: 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

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详细

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.

关键词

basalts, rhyolites, Central Kazakhstan, Mesoproterozoic, rifting, Nuna (Colambia)

参考

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