| Autor: |
S. V. Bogdanova, Stefan Claesson, A. V. Postnikov, M. O. Anosova, T. I. Kirnozova, M. M. Fugzan, A. A. Fedotova |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Доклады Академии наук. 488:307-312 |
| ISSN: |
0869-5652 |
| DOI: |
10.31857/s0869-56524883307-312 |
| Popis: |
This paper presents age data of the Elabuga zone rocks metamorphism and of the detrital zircon of the Elabuga zone paragneisses and their correlation with the age of Middle-Volga megablock rocks. The Elabuga zone rocks and the Middle-Volga megablock rocks have similar geochemical characteristics and degree of metamorphism. Difference is as follows: Paleoproterozoic metamorphism is occurred at the studied Elabuga zone rocks and such metamorphism age is not presented at the Middle-Volga megablock rocks. The study of U-Pb isotopic system in external zones in the Elabuga deformation zone zircon crystals suggests that rocks were underwent by metamorphism of two stages 1.99 and 1.95 Ga ago. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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