Early neoproterozoic island-arc volcanogenic-sedimentary complex of the Ulutau terrane (Central Kazakhstan): substantiation of age and formation conditions
- 作者: TRETIAKOV A., Kanygina N., Degtyarev K.E.1, Dubenskiy A.S.2, Erofeeva K.G.1, Sheshukov V.S.2
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隶属关系:
- Geological Institute of the Russian Academy of Sciences
- Geological Institute, Russian Academy of Sciences
- 期: 卷 526, 编号 2 (2026)
- 栏目: GEOLOGY
- ##submission.dateSubmitted##: 23.10.2025
- ##submission.dateAccepted##: 10.11.2025
- ##submission.datePublished##: 18.11.2025
- URL: https://journals.rcsi.science/2686-7397/article/view/341057
- ID: 341057
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An Early Neoproterozoic (Middle Tonian) complex of differentiated volcanites has been identified for the first time in the central part of the Karsakpai (eastern) zone of the Ulutau terrane. A U–Th–Pb (SIMS, LA-ICP-MS) geochronological study of acidic effusions and tuffs was performed, and the age of their formation was estimated in the range of 845 – 825 Ma. A characteristic feature of effusions and tuffs is the presence of zircon crystals in them with ages ranging from the Neoarchean to the Late Paleoproterozoic. Petrogeochemical characteristics of volcanites indicate the suprasubduction origin of their parental melts. Analogues of the studied volcanic complex are known within the Tarim and Yangtze cratons, which suggests the existence of an extended convergent margin, the evolution of which occurred during the Tonian period of the Neoproterozoic
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作者简介
ANDREI TRETIAKOV
编辑信件的主要联系方式.
Email: and8486@yandex.ru
Nadezda Kanygina
Email: kanygina.nadia@gmail.com
Kirill Degtyarev
Geological Institute of the Russian Academy of Sciences
Email: degtkir@mail.ru
Moscow, Russia
Alexsandr Dubenskiy
Geological Institute, Russian Academy of Sciences
Email: alexchem206@gmail.com
Moscow, Russia
Ksenya Erofeeva
Geological Institute of the Russian Academy of Sciences
Email: xenin.erofeeva@ya.ru
Moscow, Russia
Viktor Sheshukov
Geological Institute, Russian Academy of Sciences
Email: dr.vssh@yandex.ru
Moscow, Russia
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