Polychronous Zirconology of Navysh Volcanics of the Ai Formation (Southern Urals)
- Authors: Krasnobaev A.A.1,2, Puchkov V.N.1,2, Sergeeva N.D.2
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Affiliations:
- Institute of Geology and Geochemistry, Ural Branch
- Institute of Geology, Ufa Science Center
- Issue: Vol 478, No 1 (2018)
- Pages: 56-61
- Section: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/191938
- DOI: https://doi.org/10.1134/S1028334X18010038
- ID: 191938
Cite item
Abstract
In order to resolve the age of Navysh volcanics (NV), which is usually attributed to the Lower Riphean of the Ai Formation, we have used geochronological, petrologic, and mineralogical methods of zirconology, apart from the SHRIMP isotopic data of single zircon grains. Moreover, TIMS isotope age analyses have been conducted, the results of which can be regarded as both controlling and providing the most correct information. The TIMS and SHRIMP data make it possible to suggest a polychronous character of the NV, which include not only Riphean, but also Paleozoic groups of volcanics. In this situation, an assessment of the scales of such polychroneity of NV and, correspondingly, of the Ai Formation as a whole becomes urgent.
About the authors
A. A. Krasnobaev
Institute of Geology and Geochemistry, Ural Branch; Institute of Geology, Ufa Science Center
Author for correspondence.
Email: Krasnobaev@igg.uran.ru
Russian Federation, Yekaterinburg, 620016; Ufa, 450077
V. N. Puchkov
Institute of Geology and Geochemistry, Ural Branch; Institute of Geology, Ufa Science Center
Email: Krasnobaev@igg.uran.ru
Russian Federation, Yekaterinburg, 620016; Ufa, 450077
N. D. Sergeeva
Institute of Geology, Ufa Science Center
Email: Krasnobaev@igg.uran.ru
Russian Federation, Ufa, 450077
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