FIRST LA-ICP-MS APATITE FISSION-TRACK AGES FROM THE SIBERIAN PLATFORM BASEMENT (NEPSKO-BOTUOBINSKAYA ANTECLISE)
- Autores: Bagdasaryan T.E.1,2, Gayduk A.V.3, Khubanov V.B.4, Latyshev A.V.1,2, Veselovskiy R.V.1,2
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Afiliações:
- Lomonosov Moscow State University, Geological faculty
- Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
- “Energy Research” LLC
- Dobretsov Geological Institute, Russian Academy of Sciences, Siberian Branch
- Edição: Volume 510, Nº 2 (2023)
- Páginas: 161-165
- Seção: GEOCHEMISTRY
- ##submission.dateSubmitted##: 30.01.2025
- ##submission.datePublished##: 01.06.2023
- URL: https://edgccjournal.org/2686-7397/article/view/649646
- DOI: https://doi.org/10.31857/S2686739723600248
- EDN: https://elibrary.ru/UKOOMQ
- ID: 649646
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Resumo
We present the first results of LA-ICP-MS apatite fission-track dating (AFT) from nine core samples from wells, that exposed the top of the crystalline basement of the Siberian platform within the Nepsko-Botuobinskaya anteclise on the ~2 km depth. Obtained AFT ages belong to three clusters with mean values of 200, 140, and 60 Ma. A thermal event of ~200 Ma is widespread throughout almost the entire Siberian platform and reflects the stage of its Early Jurassic uplift. Reset of the fission-track geochronometer in apatite ~140 Ma correlates with tectono-thermal event marking the final stage of the Mongol-Okhotsk fold belt collision. The youngest AFT ages of ~60 Ma, on the one hand, may reflect the early (crypto) stage of the Baikal rifting, and, on the other hand, be a consequence of the high content of uranium in apatite.
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Sobre autores
T. Bagdasaryan
Lomonosov Moscow State University, Geological faculty; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Autor responsável pela correspondência
Email: roman.veselovskiy@ya.ru
Russian, Moscow; Russian, Moscow
A. Gayduk
“Energy Research” LLC
Email: roman.veselovskiy@ya.ru
Russian, Moscow
V. Khubanov
Dobretsov Geological Institute, Russian Academy of Sciences, Siberian Branch
Email: roman.veselovskiy@ya.ru
Russian, Ulan-Ude
A. Latyshev
Lomonosov Moscow State University, Geological faculty; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Email: roman.veselovskiy@ya.ru
Russian, Moscow; Russian, Moscow
R. Veselovskiy
Lomonosov Moscow State University, Geological faculty; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Autor responsável pela correspondência
Email: roman.veselovskiy@ya.ru
Russian, Moscow; Russian, Moscow
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