气候变化领域集成服务门户(CCPortal): Provenance and Climatic Implications of the Middle-Pleistocene Loess Deposit, Southern China

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DOI	10.3389/feart.2021.682875
	Provenance and Climatic Implications of the Middle-Pleistocene Loess Deposit, Southern China
	Fan, Qingbin; Liao, Jie; Li, Yan; Ye, Wei; Wang, Tao; Feng, Xiao
通讯作者	Liao, J (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China.
发表日期	2021
EISSN	2296-6463
卷号	9
英文摘要	The middle-Pleistocene Xiashu loess deposit in the lower reaches of the Yangtze River (LRYR), southern China, may yield evidence with significant climatic and environmental significance. However, its provenance remains controversial. In this study, grain size analysis, and quartz grain surface microtextural and morphological observations, enabled comparison of the provenance of loess in the LRYR with those on the Loess Plateau in northern China. The results show that the grain size characteristics of the Xiashu loess do not follow the coarse-fine NW-SE trend in northern China, and the surface microtextures of the quartz grains in the Xiashu loess are distinctly different from those on the Loess Plateau in northern China, indicating that the loess deposits in the two regions have different provenances. The Gobi Desert in inland northwestern China are not considered as the primary provenance of the Xiashu loess. Instead, the adjacent floodplains in the LRYR, the alluvial plains of the Huai River and the Yellow River to the north during glacial periods are suggested as the dominant source materials for the Xiashu loess. Under the background of middle-Pleistocene climate transition (MPT), regional aridity and a strengthened east Asian winter monsoon (driven by global cooling and the rapid uplift of the Tibetan Plateau) were considered as the primary drivers for the development of the Xiashu loess. The sustained eolian loess accumulation represent a regional response of the northern subtropical area of southern China to the MPT global cooling event at around 0.9 Ma.
关键词	SCANNING-ELECTRON-MICROSCOPY ASIAN WINTER MONSOON XIASHU LOESS QUARTZ GRAINS MICROTEXTURAL ANALYSIS SOIL SEQUENCES ICE-VOLUME SEM INTENSITY EXTREMES
英文关键词	Xiashu loess; eolian; provenance; east Asian winter monsoon; global cooling
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000661165000001
来源期刊	FRONTIERS IN EARTH SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253689
作者单位	[Fan, Qingbin; Liao, Jie; Wang, Tao; Feng, Xiao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China; [Fan, Qingbin; Feng, Xiao] Univ Chinese Acad Sci, Beijing, Peoples R China; [Li, Yan] Nanjing Forestry Univ, Coll Forestry, Nanjing, Peoples R China; [Ye, Wei] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Fan, Qingbin,Liao, Jie,Li, Yan,et al. Provenance and Climatic Implications of the Middle-Pleistocene Loess Deposit, Southern China[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Fan, Qingbin,Liao, Jie,Li, Yan,Ye, Wei,Wang, Tao,&Feng, Xiao.(2021).Provenance and Climatic Implications of the Middle-Pleistocene Loess Deposit, Southern China.FRONTIERS IN EARTH SCIENCE,9.
MLA	Fan, Qingbin,et al."Provenance and Climatic Implications of the Middle-Pleistocene Loess Deposit, Southern China".FRONTIERS IN EARTH SCIENCE 9(2021).