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    A New 14C Data Set of the PY608W-PC Sediment Core from Lake Pumoyum Co (Southeastern Tibetan Plateau) over the Last 19 kyr

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    Author
    Watanabe, Takahiro
    Matsunaka, Tetsuya
    Nakamura, Toshio
    Nishimura, Mitsugu
    Izutsu, Yasuhiro
    Minami, Motoyasu
    Nara, Fumiko Watanabe
    Kakegawa, Takeshi
    Zhu, Liping
    Issue Date
    2010-01-01
    
    Metadata
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    Citation
    Watanabe, T., Matsunaka, T., Nakamura, T., Nishimura, M., Izutsu, Y., Minami, M., ... & Zhu, L. (2010). A new 14C data set of the PY608W-PC sediment core from Lake Pumoyum Co (Southeastern Tibetan Plateau) over the last 19 kyr. Radiocarbon, 52(3), 1435-1442.
    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/10150/654111
    DOI
    10.1017/S0033822200046518
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    A new continuous sediment core (PY608W-PC; 3.8 m length) for reconstruction of climatic and environmental changes in the southeastern Tibetan Plateau was taken from the eastern part of Lake Pumoyum Co in August 2006. Sediment layers of the lower part of PY608W-PC (380-300 cm depth) were composed mainly of relatively large plant residues (up to ~3 cm in length) with an admixture of fine sand and sandy silt. The large plant residues disappeared at ~300-290 cm depth in core PY608W-PC and were replaced by silt-silty clay. The large plant residues from the lower part of PY608W-PC could be aquatic, because the plant residues were extremely enriched in 13C (up to -3.0‰, -5.6 +/- 2.3‰ on average). On the other hand, the plant residue concentrates (PRC fractions) from the upper part of the core (290-0 cm in depth) could be terrestrial C3 plants (delta-13C = -21.8 +/- 1.7 on average). Radiocarbon dating was performed on the large plant residues and PRC fractions from the PY608W-PC sediment core, which represented the chronology from ~19,000 cal BP to present.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200046518
    Scopus Count
    Collections
    Radiocarbon, Volume 52, Number 3 (2010)

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