Arid
DOI10.1016/j.aeolia.2018.07.004
Geochemical characteristics of the fine-grained component of surficial deposits from dust source areas in northwestern China
Wang, Xunming1,2; Hua, Ting3; Zhu, Bingqi1; Lang, Lili1; Zhang, Caixia3
通讯作者Wang, Xunming
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2018
卷号34页码:18-26
英文摘要

Identifying the geochemical characteristics of the surface fine-grained sediments in the mid-latitude deserts of Asia is essential for interpreting and tracing the aeolian sediments deposited in the far-away regions. The geochemical characteristics of ground surface fine-grained deposits (fractions < 63 pin in diameter) at five potential dust source areas (gobi deserts) of northwestern China, including the northern Qinghai-Tibet Plateau, the Tarim Basin, the Turpan-Hami Basin, the Hexi Corridor, and the Ala Shan Plateau, were investigated. The analytical results show that there are significant spatial differences in the geochemical characteristics among these regions. Geographically, the high contents of P, Ti, La, Ce, and Nd in the Tarim Basin, Mn, Co, Cu, Zn, Ga, Sr, Pb, and CaO in the Turpan-Hami Basin, Rb, Ba, Al2O3, Na2O, and K2O in the Hexi Corridor, and V, Cr, Ni, As, Y, Zr, Nb, SiO2, Fe2O3, and MgO in the Ala Shan Plateau, are identified. The spatial differences in the geochemical characteristics may be integrated signatures resulted from the differences in the fine-grained sediments’ formation, provenance, transportation, and deposition dynamics related to the local geologic and climatic settings. These mixed signatures in compositions may result in deviations in interpreting aeolian deposits far from the source regions, and consequently, affect their environmental implications as the proxies used in the past climate reconstructions.


英文关键词Dust aerosol source area Surface fine-grained deposits Geochemistry Northwestern China
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000445984800002
WOS关键词ATMOSPHERIC MINERAL DUST ; PAST 8 MA ; ASIAN DUST ; NORTHERN CHINA ; TAKLIMAKAN DESERT ; TIBETAN PLATEAU ; EOLIAN DEPOSITS ; LOESS PLATEAU ; ISOTOPIC CHARACTERISTICS ; PROVENANCE CHANGE
WOS类目Geography, Physical
WOS研究方向Physical Geography
来源机构中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207241
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Key Lab Desert & Desertificat Cold & Arid Reg, Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xunming,Hua, Ting,Zhu, Bingqi,et al. Geochemical characteristics of the fine-grained component of surficial deposits from dust source areas in northwestern China[J]. 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所,2018,34:18-26.
APA Wang, Xunming,Hua, Ting,Zhu, Bingqi,Lang, Lili,&Zhang, Caixia.(2018).Geochemical characteristics of the fine-grained component of surficial deposits from dust source areas in northwestern China.AEOLIAN RESEARCH,34,18-26.
MLA Wang, Xunming,et al."Geochemical characteristics of the fine-grained component of surficial deposits from dust source areas in northwestern China".AEOLIAN RESEARCH 34(2018):18-26.
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