New Data on the Paleoproterozoic Age of Metamorphism in the Yelabuga Deformation Zone of Volgo-Uralia, East European Craton
- Authors: Fedotova A.A.1,2, Bogdanova S.V.3,4, Claesson S.5, Anosova M.O.1, Postnikov A.V.6, Fugzan M.M.1, Kirnozova T.I.1
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Affiliations:
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences
- Geological Institute, Russian Academy of Sciences
- Geological Institute of Lund University
- Kazan Federal University
- Swedish Royal Museum of Natural History
- Gubkin Russian State University of Oil and Gas
- Issue: Vol 488, No 1 (2019)
- Pages: 1123-1127
- Section: Geology
- URL: https://journals.rcsi.science/1028-334X/article/view/195467
- DOI: https://doi.org/10.1134/S1028334X19090241
- ID: 195467
Cite item
Abstract
This data on the age of metamorphism of rocks of the Yelabuga zone and the geochronological data on detrital zircon from paragneisses of the same zone are presented, and their correlation with the ages of rocks from the Middle Volga megablock is made. The rocks of the Yelabuga zone and Middle Volga megablock have similar geochemical characteristics and degrees of metamorphism, but demonstrate the following differences: Paleoproterozoic metamorphism was clearly expressed in the studied rocks of the Yelabuga zone, which contrasts to rocks of the Middle Volga megablock, where no metamorphism of this age is manifested. The study of the U–Pb isotopic system in external zones of zircon crystals from the Yelabuga deformation zone suggests that rocks underwent two stages of metamorphism, 1.99 and 1.95 Ga ago.
About the authors
A. A. Fedotova
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences; Geological Institute, Russian Academy of Sciences
Email: masha_anosova@mail.ru
Russian Federation, Moscow,
117975 ;
Moscow, 119017
S. V. Bogdanova
Geological Institute of Lund University; Kazan Federal University
Email: masha_anosova@mail.ru
Sweden, Lund,
SE-22362; Kazan, 420008
S. Claesson
Swedish Royal Museum of Natural History
Email: masha_anosova@mail.ru
Sweden, Stockholm,
SE-10605
M. O. Anosova
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: masha_anosova@mail.ru
Russian Federation, Moscow,
117975
A. V. Postnikov
Gubkin Russian State University of Oil and Gas
Email: masha_anosova@mail.ru
Russian Federation,
Moscow
M. M. Fugzan
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences
Email: masha_anosova@mail.ru
Russian Federation, Moscow,
117975
T. I. Kirnozova
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences
Email: masha_anosova@mail.ru
Russian Federation, Moscow,
117975