Paleomagnetism of the Permian-Triassic Boundary of the Orenburg Region (East European Platform, Volga-Ural Anteclise)-Reference-Cited by-同舟云学术

Paleomagnetism of the Permian-Triassic Boundary of the Orenburg Region (East European Platform, Volga-Ural Anteclise)

Published:2024-01-09 Issue:4 Volume:165 Page:590-605
ISSN:2500-218X
Container-title:Uchenye Zapiski Kazanskogo Universiteta Seriya Estestvennye Nauki
language:
Short-container-title:jour

Author:

Fetisova A. M.¹,Veselovskiy R. V.¹,Golubev V. K.

Affiliation:

1. Lomonosov Moscow State University; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences

Abstract

This article presents the results of a detailed paleomagnetic study of five sections of the Permian-Triassic sedimentary rocks from the southeastern part of the Volga-Ural anteclise in the East European Platform (Orenburg region, Russia): Boevaya Gora, Vyazovka, Sambulak, Krasnogor, and Vozdvizhenka. The magnetic fabric determined by magnetic susceptibility anisotropy indicates that the rocks accumulated under the conditions of intense hydrodynamic activity. This makes it possible to reconstruct a predominantly submeridional transport of detrital material. The rocks of the Boevaya Gora section have a bipolar distribution of the characteristic component of their remanent magnetization, while other sections show a reversed polarity. In the Vyazovka section, the E/I method was used to calculate the inclination shallowing coefficient of the rocks (f = 0.79). The regional fold test yielded positive results, suggesting that the rocks of the studied sections were displaced after the deposition. For each section, paleomagnetic poles were calculated, with the poles of the Boevaya Gora and Vyazovka sections being the most reliable. The mean paleomagnetic pole coordinates of the studied sections, except the Sambulak section, are as follows: slat = 51.7°, slong = 55.8°, n = 4, plat = 48.5°, plong = 173.4°, α95 = 3.4°, paleolat = 23.4°.

Publisher

Kazan Federal University

Reference20 articles.

1. Torsvik T.H., Van der Voo R., Preeden U., Mac Niocaill C., Steinberger B., Doubrovine P.V., van Hinsbergen D.J.J., Domeier M., Gaina C., Tohver E., Meert J.G., McCausland P.J.A., Cocks L.R.M. Phanerozoic polar wander, palaeogeography and dynamics. Earth-Sci. Rev., 2012, vol. 114, nos. 3–4, pp. 325–368. https://doi.org/10.1016/j.earscirev.2012.06.007.

2. Didenko A.N. The analysis of Meso-Cenozoic paleomagnetic poles and the apparent polar wander path of Siberia. Izv., Phys. Solid Earth, 2015, vol. 51, no. 5, pp. 674–688. https://doi.org/10.1134/S1069351315050043.

3. Fetisova A.M., Veselovskiy R.V., Scholze F., Balabanov Yu.P. The new Permian–Triassic paleomagnetic pole for the East European Platform corrected for inclination shallowing. Izv., Phys. Solid Earth, 2018, vol. 54, no. 1, pp. 150–162. https://doi.org/10.1134/S1069351318010068.

4. Fetisova A.M., Veselovskiy R.V., Arefiev M.P. New paleomagnetic data on the Permian-Triassic sedimentary sections of the Moscow syneclise. Uchenye Zapiski Kazanskogo Universiteta. Seriya: Estestvennye Nauki, 2020, vol. 162, no. 2, pp. 228–243. https://doi.org/10.26907/2542-064X.2020.2.228-243. (In Russian)

5. Fetisova A.M., Golubev V.K., Veselovskiy R.V., Balabanov Yu.P. Paleomagnetism and magnetostratigraphy of Permian-Triassic reference sections in the central Russian plate: Zhukov ravine, Slukino, and Okskiy Siyezd. Russ. Geol. Geophys., 2022, vol. 63, no. 10, pp. 1162–1176. https://doi.org/10.2113/RGG20214336.