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Turkish Journal of Earth Sciences

Author ORCID Identifier

MARINA SOBOLEVA: 0009-0001-4904-8107

DENIS GRUZDEV: 0000-0002-6100-7148

DMITRY SOBOLEV: 0000-0001-7097-2874

ANDREY ZHURAVLEV: 0000-0003-4043-6303

DOI

10.55730/1300-0985.1926

Abstract

Evidence of the Frasnian Genundewa Event at the FZ 2 – FZ 3 boundary interval has been detected in the facies of the isolated carbonate platform in Subpolar Urals. The preserved traces of the Genundewa Event represent micritic microlaminated carbonates, which manifests a short-term deepening episode in an extremely shallow water background. From the onset of this deep-water deposition there is a dominance of Polygnathus, Ancyrodella, and Mesotaxis whereas in the underlying shallow water deposits, the genus Polygnathus clearly predominated. No specific features of the Genundewa Event were observed in the C-isotope record. The mean δ13Ccarb value is approximately 2‰ in the event interval. The onset of the Genundewa Еvent corresponds to the beginning of Euro-American IIb-2 cycle and is correlated with the base of the Sargaevian regional substage of the Urals and Russian Platform, as well as the base of Poland IC cycle. This correlation confirms the global character of this event.

Keywords

Genundewa Event, Upper Devonian, Frasnian, conodonts, Subpolar Urals, Matyashor Formation

First Page

481

Last Page

502

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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