Arid
DOI10.1016/j.gloplacha.2009.02.003
Element composition of dust from a shallow Dunde ice core, Northern China
Wu, Guangjian1; Zhang, Chenglong1; Gao, Shaopeng1; Yao, Tandong1; Tian, Lide1,2; Xia, Dunsheng3
通讯作者Wu, Guangjian
来源期刊GLOBAL AND PLANETARY CHANGE
ISSN0921-8181
EISSN1872-6364
出版年2009
卷号67期号:3-4页码:186-192
英文摘要

The Dunde ice cap (38 degrees 06’N, 96 degrees 24’E, with a summit of 5325 m) is situated at the centre of the northern Chinese deserts and receives dust from these regions. Here, we present the trace and rare earth element (REE) compositions of dust extracted from a shallow ice core from the Dunde ice cap, which provide a framework to trace the source of Dunde dust. Trace and REE parameters of Dunde dust show characteristics of a typical eolian deposit, with an average La/Th ratio of 2.6, a Th/U ratio of 3.7, and a strong negative Eu anomaly (0.61). The dirty layers in the ice core section have the same element characteristics as in the clear layers, indicating that the dust in Dunde is well-mixed and has a stable composition. Trace element and REE ratio plots show that Dunde dust has a similar composition to the finer fraction materials in the Taklimakan desert, suggesting that the Tarim Basin might be an important source for Dunde dust under the present circulation, but not favoring a material contribution from Badain Jaran. Our results reveal distinct differences in composition between Dunde dust and Chinese loess materials, which suggests that they have different sources. (C) 2009 Elsevier B.V. All rights reserved.


英文关键词Asian dust Dunde ice core element composition Tibetan Plateau
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000266753900005
WOS关键词LOESS PLATEAU ; PROVENANCE ; RECORDS ; GEOCHEMISTRY ; EVOLUTION ; DEPOSITS ; DESERT ; STORMS
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构中国科学院西北生态环境资源研究院 ; 中国科学院青藏高原研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/160859
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Tibetan Environm Changes & Land Surface Proc, Beijing 100085, Peoples R China;
2.Chinese Acad Sci, CAREERI, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China;
3.Chinese Acad Sci, CAREERI, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Wu, Guangjian,Zhang, Chenglong,Gao, Shaopeng,et al. Element composition of dust from a shallow Dunde ice core, Northern China[J]. 中国科学院西北生态环境资源研究院, 中国科学院青藏高原研究所,2009,67(3-4):186-192.
APA Wu, Guangjian,Zhang, Chenglong,Gao, Shaopeng,Yao, Tandong,Tian, Lide,&Xia, Dunsheng.(2009).Element composition of dust from a shallow Dunde ice core, Northern China.GLOBAL AND PLANETARY CHANGE,67(3-4),186-192.
MLA Wu, Guangjian,et al."Element composition of dust from a shallow Dunde ice core, Northern China".GLOBAL AND PLANETARY CHANGE 67.3-4(2009):186-192.
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