The Age of the Tetrapod Fauna “Mastodonsaurus” (Middle Triassic) of the East European Platform: First U-Pb LA-ICPMS Radioisotopic Dating Results. Article 2. Datings and Model of Sedimentation
The article presents the first data of the U-Pb LA-ICPMS dating of the tetrapod fauna “Mastodonsaurus” (Middle Triassic). The U-Pb age (241.6 ± 1.0 Ma) of the sediments directly underlying the layers of the Inder Formation with the fauna “Mastodonsaurus” in the Kok-Tau section (Pre-Caspian Depression) indicates that the base of the Inderian Regional stage roughly corresponds to the Anisian-Ladinian boundary and can be used as the lower age limit for the distribution of this fauna. The obtained radioisotopic dating, as well as palaeontological data on the bone-bearing Bukobayian Regional stage of the Southern Urals, place the stratigraphic range of the fauna “Mastodonsaurus” within the Ladinian Stage. A palaeogeographic model of the sediment accumulation in the Eltonian and Inderian time is proposed.
Authors
- A. V. Kulikova (ORCID: https://orcid.org/0000-0003-4263-5031)
- E. Nurieva (ORCID: https://orcid.org/0000-0003-3234-0870)
- J. B. Yakupova (ORCID: https://orcid.org/0000-0003-3875-1224)
- D. N. Miftakhutdinova (ORCID: https://orcid.org/0000-0002-9115-1343)
- И. В. Новиков (ORCID: https://orcid.org/0000-0002-7400-5790)
- К. М. Ахмеденов (ORCID: https://orcid.org/0000-0001-7294-0913)
- Vladimir V. Silantiev (ORCID: https://orcid.org/0000-0003-2858-0708)
- Anastasia Felker (ORCID: https://orcid.org/0000-0002-3734-2026)
- R. R. Gabdullin (ORCID: https://orcid.org/0000-0001-8296-7191)
- Ya. Ya. Saetgaleeva
Institutions
- Lomonosov Moscow State University (RU)
- Kazan Federal University (RU)
- Mahambet Otemiusly West Kazakhstan University (KZ)
- Institute of Paleontology A A Borisyak (RU)
- V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry (RU)
Publication Details
- Journal
- Moscow University Bulletin Series 4 Geology
- Published
- 2025-01-01
- DOI
- https://doi.org/10.55959/msu0579-9406-4-2025-64-3-26-37
- Primary Topic
- Geological and Geochemical Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00