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    Radiocarbon and Stable Carbon Isotope Ratio Data from a 4.7-m-long Sediment Core of Lake Baikal (Southern Siberia, Russia)

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    Author
    Nara, Fumiko Watanabe
    Watanabe, Takahiro
    Nakamura, Toshio
    Kakegawa, Takeshi
    Katamura, Fumitaka
    Shichi, Koji
    Takahara, Hikaru
    Imai, Akio
    Kawai, Takayoshi
    Issue Date
    2010-01-01
    
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    Show full item record
    Citation
    Nara, F. W., Watanabe, T., Nakamura, T., Kakegawa, T., Katamura, F., Shichi, K., ... & Kawai, T. (2010). Radiocarbon and Stable Carbon Isotope Ratio Data from a 4.7-Mlong Sediment Core of Lake Baikal (Southern Siberia, Russia). Radiocarbon, 52(3), 1449-1457.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.
    URI
    http://hdl.handle.net/10150/654293
    DOI
    10.1017/S0033822200046531
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    A sediment core (VER99G12; core length, 4.66 m) was taken from the Buguldeika Saddle of Lake Baikal in 1999. Radiocarbon measurements of total organic carbon (TOC) and pollen concentrate fractions from the VER99G12 core were performed by a Tandetron accelerator mass spectrometry (AMS) system (Model-4130, HVEE) at Nagoya University. The AMS 14C ages showed that the VER99G12 core spans the past ~30 cal ka BP (from the MIS 3 to present), and the average sedimentation rate of this core was calculated to be 13.6 cm/kyr based on the calibrated ages. This means that the time resolution of VER99G12 sediment samples in this study is better than ~70-80 yr/cm. Stable carbon isotope ratios of TOC (13CTOC) in the VER99G12 core varied widely from about 26.6 to 31.3 during the last glacial/post-glacial transition period (about 17-12 cal ka BP). Therefore, a rapid change in the carbon sources in Lake Baikal occurred in the last glacial/post-glacial transition period is concluded.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200046531
    Scopus Count
    Collections
    Radiocarbon, Volume 52, Number 3 (2010)

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