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O-18 and C-13 in fossil shells of Radix sp from the sediment succession of a dammed palaeo-lake in the Yarlung Tsangpo valley, Tibet, China
Hu, HP (Hu, Hai-Ping)1,3; Feng, JL (Feng, Jin-Liang)1; Chen, F (Chen, Feng)1,2,3; Feng, JL
Source PublicationBOREAS
2017
Volume46Issue:3Pages:412-427
DOI10.1111/bor.12231
AbstractA series of confirmed and suspected dammed palaeo-lake sedimentary successions is scattered within the middle Yarlung Tsangpo valley in Tibet. However, the chronology, the genesis of the dam and its location, the water level of the dammed lake, the process of dam failure and the spatiotemporal relationships between the sedimentary successions remain controversial. Here, we focus on one sedimentary succession of the suspected dammed palaeo-lake at Xigaze. We measured the grain-size distribution, magnetic susceptibility, organic and inorganic carbon content, and C-13(org) and N-15(total) ratios of the sediments. In addition, we measured the O-18(shell) and C-13(shell) values of modern and fossil Radix sp. shells, and the O-18(water) and C-13(DIC) values of the ambient water with different hydrological regimes. The results indicate that the O-18(shell) values of modern Radix sp. and the O-18(water) of the ambient water body significantly depend on its hydrological status. In addition, a strong positive relationship was observed between O-18(shell) values of modern Radix sp. shells and the O-18(water) of the ambient water on the Tibetan Plateau. According to this correlation, the O-18(water) values of the palaeo-water body are reconstructed using the O-18(shell) values of Radix sp. fossil shells in the Xigaze section. Further, based on the O-18(shell) values of fossil Radix sp., the reconstructed O-18(water) of the palaeo-water body and the specific habitats of Radix sp., we infer that the sedimentary succession in the Xigaze broad valley was mainly formed within the backwater terminal zone of a dammed palaeo-lake and that the elevation of the water level of the lake was approximately 3811m a.s.l. AMS C-14 dating indicates that the deposits of the dammed palaeo-lake were formed at about 33-22cal. ka BP. Finally, the presence of Radix sp. fossil shells within the Xigaze section suggests that Radix sp. survived the late Last Glacial Period on the Tibetan Plateau.
Subject Area自然地理学
WOS IDWOS:000404144500004
Language英语
Indexed BySCI
KeywordEastern Pamirs Tajikistan Aquatic Gastropod Radix Age Calibration Curves Carbon-isotope Ratios Organic-matter Southeastern Tibet Late Pleistocene Stable Isotopes Mollusk Shells River Incision
WOS Research AreaPhysical Geography; Geology
WOS SubjectGeography, Physical; Geosciences, Multidisciplinary ; Physical Geography; Geology
Cooperation Status国内
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8049
Collection图书馆
Corresponding AuthorFeng, JL
Affiliation1.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
2.Shanxi Univ Finance & Econ, Dept Environm Econ, Taiyuan 030006, Peoples R China.
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Hu, HP ,Feng, JL ,Chen, F ,et al. O-18 and C-13 in fossil shells of Radix sp from the sediment succession of a dammed palaeo-lake in the Yarlung Tsangpo valley, Tibet, China[J]. BOREAS,2017,46(3):412-427.
APA Hu, HP ,Feng, JL ,Chen, F ,&Feng, JL.(2017).O-18 and C-13 in fossil shells of Radix sp from the sediment succession of a dammed palaeo-lake in the Yarlung Tsangpo valley, Tibet, China.BOREAS,46(3),412-427.
MLA Hu, HP ,et al."O-18 and C-13 in fossil shells of Radix sp from the sediment succession of a dammed palaeo-lake in the Yarlung Tsangpo valley, Tibet, China".BOREAS 46.3(2017):412-427.
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