Email this article Kumystin granosyenites complex of the late Cryogenian in Bolshoi Karatau (South Kazakhstan), age substantiation
- Authors: Degtyarev K.E.1, Tretyakov A.A.1, Salnikova E.B.2, Kotov A.B.2
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Affiliations:
- Geological Institute RAS Research Organization of the Russian Academy of Sciences
- Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences
- Issue: Vol 484, No 5 (2019)
- Pages: 579-583
- Section: Geology
- URL: https://journals.eco-vector.com/0869-5652/article/view/12776
- DOI: https://doi.org/10.31857/S0869-56524845579-583
- ID: 12776
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Abstract
The results of U–Pb geochronological studies of quartz syenites of the Kumystin complex of the Bolshoi Karatau ridge in southern Kazakhstan are presented and their late Neoproterozoic (717 ± 4 Ma) age is substantiated. Kumystin syenites complex together with rhyolites and basalts of the Kainar Formation are the youngest formations taking part in the basement of Karatau-Dzhebagly precambrian massif and formed in the second half of Cryogenian. The data set about the ages of the youngest complexes taking part in the basement of precambrian massifs of the Western part of the Central Asian belt indicates that the ending of magmatic activity within various massifs occurred asynchronously during the Neoproterozoic.
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About the authors
K. E. Degtyarev
Geological Institute RAS Research Organization of the Russian Academy of Sciences
Author for correspondence.
Email: degtkir@mail.ru
Corresponding Member of the RAS
Russian Federation, 7, Pyzhevsky lane, Moscow, 119017A. A. Tretyakov
Geological Institute RAS Research Organization of the Russian Academy of Sciences
Email: degtkir@mail.ru
Russian Federation, 7, Pyzhevsky lane, Moscow, 119017
E. B. Salnikova
Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences
Email: degtkir@mail.ru
Russian Federation, 2, Makarova embankment, St.Petersburg, 199034
A. B. Kotov
Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences
Email: degtkir@mail.ru
Russian Federation, 2, Makarova embankment, St.Petersburg, 199034
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