The first case study of 230Th/U and 14C dating of mid-valdai organic deposits

被引：0
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作者：
F. E. Maksimov
V. Yu. Kuznetsov
N. E. Zaretskaya
D. A. Subetto
V. V. Shebotinov
I. E. Zherebtsov
S. B. Levchenko
D. D. Kuznetsov
E. Larsen
A. Lysö
M. Jensen
机构：
[1] St. Petersburg State University,Geological Institute
[2] Russian Academy of Sciences,Institute of Limnology
[3] Gertsen Russian State Pedagogical University,undefined
[4] Russian Academy of Sciences,undefined
[5] Geological Survey of Norway,undefined
[6] The University Centre in Svalbard,undefined
来源：
Doklady Earth Sciences | 2011年 / 438卷
关键词：
234U; DOKLADY Earth Science; Marine Isotopic Stage; Oxbow Lake; Isochron;
D O I：
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摘要：
From the viewpoint of precision and reliability of radioisotopic dating, deposits whose quantitative age can be determined through several methods of geochronometry are of special interest. The mutually conforming finite 14C and 230Th/U dates of buried Neopleistocene organic deposits, taken from the Tolokonka section by the North Dvina River (100 km downstream from the city of Kotlas), have been obtained for the first time in Russia. The stratigraphical reference of these results to those obtained via the optically induced luminescence for upper and lower bedding layers has been established. The presented geochronometric data have allowed us to consider the age of oxbow lake organic deposits completely reliable and refer the time of their formation to the Tyrbei warming within the MIS-3. The applicability of the new version of the 230Th/U method for dating of interglacial and interstadial deposits, for the purpose of solving the Middle and Late Neopleistocene chronostratigraphy issues, is confirmed.
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