Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Radioisotopic U-pb Dating of the Kolchugino Group Basement (Kuznetsk Coal Basin, Siberia): Was the Change of Early-Middle Permian Floras Simultaneous at Different Latitudes in Angaraland?

Vladimir Vladimirovich Silantiev
* ORCID logo ,
Yaroslav Mikhailovich Gutak
,
Marion Tichomirowa
ORCID logo ,
Alexandra Käßner
ORCID logo ,
Ruslan Vladimirovich Kutygin
,
Lyubov Georgievna Porokhovnichenko
,
Eugeny Vladimirovich Karasev
,
Anastasia Sergeevna Felker
,
Aleksandr Sergeevich Bakaev
,
Maria Alekseevna Naumcheva
ORCID logo ,
Milyausha Nazimovna Urazaeva
,
Veronika Vladimirovna Zharinova
ORCID logo
Version 1 : Received: 19 November 2023 / Approved: 21 November 2023 / Online: 21 November 2023 (10:40:38 CET)

A peer-reviewed article of this Preprint also exists.

Silantiev, V.V.; Gutak, Y.M.; Tichomirowa, M.; Käßner, A.; Kutygin, R.V.; Porokhovnichenko, L.G.; Karasev, E.V.; Felker, A.S.; Bakaev, A.S.; Naumcheva, M.A.; Urazaeva, M.N.; Zharinova, V.V. U-Pb Dating of the Kolchugino Group Basement (Kuznetsk Coal Basin, Siberia): Was the Change in Early–Middle Permian Floras Simultaneous at Different Latitudes in Angaraland? Geosciences 2024, 14, 21. Silantiev, V.V.; Gutak, Y.M.; Tichomirowa, M.; Käßner, A.; Kutygin, R.V.; Porokhovnichenko, L.G.; Karasev, E.V.; Felker, A.S.; Bakaev, A.S.; Naumcheva, M.A.; Urazaeva, M.N.; Zharinova, V.V. U-Pb Dating of the Kolchugino Group Basement (Kuznetsk Coal Basin, Siberia): Was the Change in Early–Middle Permian Floras Simultaneous at Different Latitudes in Angaraland? Geosciences 2024, 14, 21.

Abstract

The Kuznetsk Basin (Kuzbass) is one of the largest coal basins in Siberia and a reference area for the ancient Angaraland continent. The proximity of the Kuzbass and Siberian platform caused their biotic similarities in the Late Palaeozoic. However, due to biota endemism, the Kuzbass Upper Palaeozoic does not correlate directly with the International Chronostratigraphic Chart (ICC). This paper discusses radioisotopic (CA-ID-TIMS) dating of zircons from a volcanic tuff located in the Starokuznetsk Formation. This level matches the interval of the Balakhonka/Kolchugino (B/K) floral change in Kuzbass, i.e. the gradual replacement of cordaitoid-dominated wet forests (Balakhonka flora) by more arid fern-pteridosperm-cordaitoid assemblages (Kolchugino flora). New age (276.9 ± 0.4 Ma) directly correlates the Starokuznetsk Fm with the Upper Kungurian of the ICS. We compared the Kuzbass data with data of the Western Verkhoyanie, where Middle Permian ammonoids (Sverdrupites assemblage) occur in strata recording the B/K floral change. Available (ICC) and new datings indicate the lag between the B/K floral change in low (Kuzbass) and high (Verkhoyanie) latitudes of Angaraland. The B/K floral change in the Kuzbass began in the early Late Kungurian and was completed by the end of this age. In contrast, the B/K floral change in Verkhoyanie began at the end of the Late Kungurian and was completed in the Late Wordian. The delay in the floral changes at different latitudes of Angaraland suggests that existing interregional correlations need further improvement.

Keywords

Kuznetsk Basin; Permian; ash bed; U-PB dating; Geochronology; Biostratigraphy; Angaraland

Subject

Environmental and Earth Sciences, Geophysics and Geology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF Download Supplementary

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Supplementary Files Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.