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Abstract <p>The article analyzes modern isotope datings of sedimentary sequences of the Serebryanka (Middle Urals) and lower part of the Asha (Southern Urals) groups. The affiliation of diamictites/tillite-like conglomerates of the Serebryanka Group and the Staropechny Formation to the Laplandian glacial horizon, as well as the problem of the stratigraphic position of the Bakeevo Formation of the Asha Group (uppermost part of the Upper Riphean or the Lower Vendian) are discussed. Possible correlation options are considered both with the involvement of the provisions of stratigraphic codes of different years, and on the basis of comparison with the type sequences of the Lapland glacial horizon of the Northern Norway (the lower part of the Vestertana Group) and the Vilchanka Group of the Orsha Depression (Republic of Belarus).</p>

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On Some Isotopic Age Estimates of Vendian Sedimentary Sequences of the Middle and Southern Urals (Reading Stratigraphic Codes and Not Only)

  • 期刊论文

  • 发表日期：

    2026年3月5日

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  • A. V. Maslov

摘要

Abstract

The article analyzes modern isotope datings of sedimentary sequences of the Serebryanka (Middle Urals) and lower part of the Asha (Southern Urals) groups. The affiliation of diamictites/tillite-like conglomerates of the Serebryanka Group and the Staropechny Formation to the Laplandian glacial horizon, as well as the problem of the stratigraphic position of the Bakeevo Formation of the Asha Group (uppermost part of the Upper Riphean or the Lower Vendian) are discussed. Possible correlation options are considered both with the involvement of the provisions of stratigraphic codes of different years, and on the basis of comparison with the type sequences of the Lapland glacial horizon of the Northern Norway (the lower part of the Vestertana Group) and the Vilchanka Group of the Orsha Depression (Republic of Belarus).