Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal
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- XIA ZHONG-HUAN
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences Graduate University of the Chinese Academy of Sciences
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- XU BAI-QING
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences
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- MÜGLER I.
- Max-Planck-Institute for Biogeochemistry
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- WU GUANG-JIAN
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences
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- GLEIXNER G.
- Max-Planck-Institute for Biogeochemistry
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- SACHSE D.
- Max-Planck-Institute for Biogeochemistry
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- ZHU LI-PING
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences
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Hydrogen isotope ratios were measured on terrigenous alkanes (n-C25 to n-C31) extracted from recent lake surface sediments from the climatically and environmentally distinct basins Qiangyong Glacier Lake, Yamzho Lake, Nam Co Lake, Keluke Lake and Xiao Qaidam Lake along a S-N transect in the Tibetan Plateau to explore the climatic implication of these biomarkers. δD values of these n-alkanes are compared to that of precipitation spanning a wide range from -167‰ to -51‰ and clearly correlate with δD values of meteoric water, indicating that terrigenous alkanes record the precipitation signal. The fractionation between precipitation and n-C25, n-C27 alkanes cover a range from -45‰ to -70‰ whilst that between precipitation and n-C29, n-C31 alkanes varies from -70‰ to -95‰ both being fairly constant along the S-N Tibetan transect with the mean at -57‰ and -82‰ respectively. By comparison with the fractionation of -130‰ along the S-N European transect, it implies that the hydrogen isotopic fractionation between meteoric water and terrestrial n-alkanes along the Tibetan transect represent distinct character.
収録刊行物
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 42 (4), 331-338, 2008
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679526110848
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- NII論文ID
- 130004469229
- 10024285437
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- NII書誌ID
- AA00654975
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- COI
- 1:CAS:528:DC%2BD1cXhtlCnsLnO
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- ISSN
- 18805973
- 00167002
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- NDL書誌ID
- 9630520
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可