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DOI | 10.1016/j.gloplacha.2009.02.003 |
Element composition of dust from a shallow Dunde ice core, Northern China | |
Wu, Guangjian; Zhang, Chenglong; Gao, Shaopeng; Yao, Tandong![]() | |
发表日期 | 2009 |
ISSN | 0921-8181 |
卷号 | 67期号:2019-03-04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 |
语种 | 英语 |
WOS研究方向 | Physical Geography ; Geology |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000266753900005 |
来源期刊 | GLOBAL AND PLANETARY CHANGE
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来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/549 |
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]. 中国科学院青藏高原研究所,2009,67(2019-03-04):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(2019-03-04),186-192. |
MLA | Wu, Guangjian,et al."Element composition of dust from a shallow Dunde ice core, Northern China".GLOBAL AND PLANETARY CHANGE 67.2019-03-04(2009):186-192. |
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