Abstract
This paper presents new data on Oligocene–Quaternary deposits, recent (Neogene–Quaternary) structures, and active faults of the northern side of the Ubsunur Basin at its boundary with the Tannu-Ola Ridge, based on structural interpretation of remote sensing (RSD) and field data (2020–2021), including trenching of active faults. Two parageneses of faults of different geological natures and structural and relief-forming significance were identified in the north of the Ubsunur Basin. The first paragenesis presented by the covered North Ubsunur thrust and related deformations that developed during Neogene–Quaternary and which formed the boundary of the depression and the mountain uplift. The second paragenesis includes the South Tannuol and Erzin-Agardag faults, which cut structures of the first paragenesis; these faults were being active in the Late Pleistocene and Holocene.
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ACKNOWLEDGMENTS
We express our heartfelt thanks to Prof. V.G. Trifonov (GIN RAS, Moscow, Russia) for his support and advice in course of preparing this article, assistance in organizing field works, and office studies of the collected material. We are grateful to the reviewer L.P. Imaeva (IEC SB RAS, Irkutsk, Russia) and an anonymous reviewer for comments that made it possible to improve the article. We are thankful to the editor M.N. Shoupletsova (GIN RAS, Moscow, Russia) for thorough editing.
Funding
The preliminary interpretation of the RSD was carried out within the framework of the state assignment of GIN RAS no. 0135-2019-0075. Field works, including trenching and aerial imagery from UAVs), as well as the preparation of this article were supported by the Russian Science Foundation (project no. 22-17-00049.
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Translated by D. Voroshchuk
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Sokolov, S.A., Garipova, S.T., Yushin, K.I. et al. The Neotectonic Structure of the Northern Framing of the Ubsunur Depression and Its Relation with Active Faults (Republic of Tuva, Russia). Geotecton. 57, 82–99 (2023). https://doi.org/10.1134/S0016852123010077
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DOI: https://doi.org/10.1134/S0016852123010077