A New 14C Data Set of the PY608W-PC Sediment Core from Lake Pumoyum Co (Southeastern Tibetan Plateau) over the Last 19 kyr
Author
Watanabe, TakahiroMatsunaka, Tetsuya
Nakamura, Toshio
Nishimura, Mitsugu
Izutsu, Yasuhiro
Minami, Motoyasu
Nara, Fumiko Watanabe
Kakegawa, Takeshi
Zhu, Liping
Issue Date
2010-01-01
Metadata
Show full item recordCitation
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.Journal
RadiocarbonDescription
From the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.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
Proceedingstext
Language
enISSN
0033-8222ae974a485f413a2113503eed53cd6c53
10.1017/S0033822200046518