First ²³⁰Th/U date of middle Pleistocene peat bog in Siberia (key section Krivosheino, Western Siberia)

• Autorzy: Maksimov F. E. F. E. , Laukhin S. A. , Arslanov K. A. , Kuznetsov V. Y. , Shilova G. N.
• Języki publikacji: EN

Abstrakty

EN

A ¹⁴C date older than 53900 yrs BP was obtained for the uppermost part of the buried peat bog in Krivosheino section (Middle Pleistocene of Western Siberia). These sediments also yielded ²³⁰Th/U dates of 195 <sup+10.8</sup> _-9.1 ka using the leachate alone (L/L) and 204 ⁺¹⁷ _-13 ka using total sample dissolution (TSD) models. Peculiarities of 230Th/U dating are discussed. Palynological investigation of the buried peat bog together with underlying and overlaying sediments, and comparison with palynologi-cal data from Baikal and Elgygytgyn lakes revealed that the peat layer in Krivosheino section was formed at the end of Shirta Interglacial (Marine Isotopic-Oxygenous stages MIS-7), when climate conditions at all studied sites were more severe compared to the modern ones.

Słowa kluczowe

EN

230Th/U dating; palynological data; palaeoclimates; Middle Pleistocene; Western Siberia

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2012
• Tom: Vol. 39, no. 4
• Strony: 241--251
• Opis fizyczny: Bibliogr. 37 poz., rys., wykr.

Twórcy

autor

Maksimov F. E. F. E.

autor

Laukhin S. A.

autor

Arslanov K. A.

autor

Kuznetsov V. Y.

autor

Shilova G. N.

• S.-Petersburg State University, 10 Line V.O., S-Petersburg State University 199178 S.-Petersburg, Russia,

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