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题名: Formation of proglacial dunes in front of the Puruogangri Icefield in the central Qinghai-Tibet Plateau: Implications for reconstructing paleoenvironmental changes since the Lateglacial
作者: Li, XZ; Yi, CL; Chen, FH(陈发虎); Yao, TD; Li, X
收录类别: SCIE ; CPCI-S
出版日期: 2006-10
会议名称: 4th International Symposium on Tibetan Plateau
会议日期: AUG 04-06, 2004
会议地点: Lhasa, PEOPLES R CHINA
英文摘要: There are sand dunes and stony desert surfaces (gobi) on the piedmont along the western side of the Puruogangri Icefield in central Qinghai-Tibet Plateau. The dunes formed on the gobi, probably after 16 ka. Their sediment derived from the underling till deflated by mid-latitude westerly winds and the Qiangtang high-pressure system. The gobi contains granitic moraine boulders, ventifacts of limestone and secondary CaCO3 precipitates at subsurface. Occasional humus layers are present within the sand dunes. A total of 13 humus layers were collected for radiocarbon dating and 20 samples for particle size analysis. The dune particle size distribution is generally negatively skewed. The radiocarbon ages range from 12,709 to 922 calendar years BP. It is likely that the humus layers correspond to warm times and can be correlated to the results from oxygen isotopic data in the ice cores from Guliya in the western Kunlun Mountains and Dunde in the Qilian Mountains. These results initially provide an outline of Lateglacial climate history for the ice field area. (c) 2006 Elsevier Ltd and INQUA. All rights reserved.
作者部门: Lanzhou Univ, CAEP, Key Lab Chinas Western Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Jointly Estab Cold & Arid Reg Environm, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Jointly Estab Cold & Arid Reg Environm, Key Lab Cryosphere & Environm, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Inst Tibetan Plateau Res, Lanzhou 730000, Peoples R China ; China Meteorol Adm, Chinese Acad Meteorol Sci, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
通讯作者: Li, XZ (reprint author), Lanzhou Univ, CAEP, Key Lab Chinas Western Environm Syst, Minist Educ, Tianshui RD298, Lanzhou 730000, Peoples R China.
学科分类: Physical Geography; Geology
会议录: QUATERNARY INTERNATIONAL
卷号: 154
页码: 122-127
出版者: ELSEVIER
出版地: OXFORD
语种: 英语
DOI: 10.1016/j.quaint.2006.02.006
ISSN号: 1040-6182
WOS记录号: WOS:000240762100014
IR记录号: WOS:000240762100014
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内容类型: 会议论文
URI标识: http://ir.lzu.edu.cn/handle/262010/184655
Appears in Collections:资源环境学院_会议论文

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Recommended Citation:
Li, XZ,Yi, CL,Chen, FH,et al. Formation of proglacial dunes in front of the Puruogangri Icefield in the central Qinghai-Tibet Plateau: Implications for reconstructing paleoenvironmental changes since the Lateglacial[C]. 见:4th International Symposium on Tibetan Plateau. Lhasa, PEOPLES R CHINA. AUG 04-06, 2004.
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