Berdyaush pluton of rapakivi granites, South Urals: New data on the geological structure and geodynamic evolution
- Authors: Snachev V.I.1, Bazhin E.A.1
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Affiliations:
- Institute of Geology, Ufa Scientific Center
- Issue: Vol 466, No 1 (2016)
- Pages: 1-5
- Section: Geology
- URL: https://journals.rcsi.science/1028-334X/article/view/187889
- DOI: https://doi.org/10.1134/S1028334X16010074
- ID: 187889
Cite item
Abstract
The new version of the geological structure of the Berdyaush pluton (a single intrusion of rapakivi granites in the Urals) presented in this paper is significantly distinct from the previous structural schemes. Rapakivi granites compose no more than 10–20% of the area of the pluton and they are widespread only in its northeastern and southwestern flanks. The contacts between gabbro (I phase), hybrid syenodiorites (II phase), and rapakivi granites (III phase) are transitional, metasomatic. The hybrid syenodiorites and rapakivi granites are formed after gabbroic rocks as a result of their intense thermal and metasomatic transformation by the deep fluids. The driving force of this process could be the unilateral compression of the Berdyaush pluton resulting from formation of the eastward continental rift in the beginning of the Middle Riphean.
About the authors
V. I. Snachev
Institute of Geology, Ufa Scientific Center
Author for correspondence.
Email: SAVant@inbox.ru
Russian Federation, ul. Karla Marksa 16/2, Ufa, 450077
E. A. Bazhin
Institute of Geology, Ufa Scientific Center
Email: SAVant@inbox.ru
Russian Federation, ul. Karla Marksa 16/2, Ufa, 450077