干旱区生态环境知识资源中心(Arid): Quantitative estimation of provenance contributions to loess deposits in Eastern China and implication for paleo-dust storm activity

Arid

DOI	10.1016/j.geomorph.2020.107489
	Quantitative estimation of provenance contributions to loess deposits in Eastern China and implication for paleo-dust storm activity
	Wu, Chao; Zheng, Xiangmin; Zhou, Limin; Ren, Shaofang; Qian, Peng
通讯作者	Qian, P (corresponding author), Nantong Univ, Sch Geog, Nantong 226007, Peoples R China. ; Zheng, XM (corresponding author), East China Normal Univ, Key Lab Geoinformat Sci, Minist Educ, Shanghai 200241, Peoples R China.
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2021
卷号	373
英文摘要	Improvement in the current knowledge regarding the provenance of loess deposits could clarify complex depositional processes, as well as provide new insights into the paleo-dust storm history in dust source areas. In this study, a comprehensive analysis of the size-differentiated geochemical compositions and zircon U-Pb ages of the examined loess deposits assisted in deepening the provenance identification of the Xiashu loess in Eastern China. It was first reported that the fine-grained components of the Xiashu loess were mainly derived from the arid region of the Asian interior via the paleo-dust storms, as supported by consistent geochemical compositions of 5 mu m components between the Xiashu loess and the Luochuan loess. It has been demonstrated that the geochemical compositions of the 10-20 mu m and 20-50 mu m components and the zircon (>40 mu m) U-Pb age distributions of the Xiashu loess were very similar to the Yangtze River sediments, revealing that the >10 mu m components of the Xiashu loess were sourced from the local floodplains of the Yangtze River's downstream regions. Furthermore, a new method of combination of provenance results of the size-differentiated fractions and quartz grain-size contents was proposed to quantitatively estimate the Xiashu loess sources. Results of the quantitative evaluations showed that at least 82.43% of the components in the Xiashu loess were the result of nearby-source transport processes and approximately 9.64% were from distant-source transport processes. We thus conclude that the activities of local ancient dust storms dominated the aeolian deposition system in the eastern plain of the Yangtze River Delta. However, it was determined that the long-range transported dust via ancient sandstorms in Asian inland cannot be ignored because fine-grained dust has important impacts on climate, ecological environment, and human health. (c) 2020 Elsevier B.V. All rights reserved.
英文关键词	Xiashu loess Zircon U-Pb age Elemental geochemistry Provenance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000597330600001
WOS关键词	EARTH-ELEMENT COMPOSITIONS ; GRAIN-SIZE DISTRIBUTION ; U-PB AGES ; SOUTHERN CHINA ; GEOCHEMICAL EVIDENCE ; YELLOW-RIVER ; XIASHU LOESS ; ASIAN DUST ; CHANGJIANG YANGTZE ; SEDIMENTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347927
作者单位	[Wu, Chao; Qian, Peng] Nantong Univ, Sch Geog, Nantong 226007, Peoples R China; [Wu, Chao; Zheng, Xiangmin; Zhou, Limin; Ren, Shaofang] East China Normal Univ, Key Lab Geoinformat Sci, Minist Educ, Shanghai 200241, Peoples R China
推荐引用方式 GB/T 7714	Wu, Chao,Zheng, Xiangmin,Zhou, Limin,et al. Quantitative estimation of provenance contributions to loess deposits in Eastern China and implication for paleo-dust storm activity[J],2021,373.
APA	Wu, Chao,Zheng, Xiangmin,Zhou, Limin,Ren, Shaofang,&Qian, Peng.(2021).Quantitative estimation of provenance contributions to loess deposits in Eastern China and implication for paleo-dust storm activity.GEOMORPHOLOGY,373.
MLA	Wu, Chao,et al."Quantitative estimation of provenance contributions to loess deposits in Eastern China and implication for paleo-dust storm activity".GEOMORPHOLOGY 373(2021).