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DOI	10.1007/s11629-020-6523-3
	Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China
	Fan Qing-bin; Liao Jie; Yan Li; 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 730000, Peoples R China.
发表日期	2021
ISSN	1672-6316
EISSN	1993-0321
起始页码	2048
结束页码	2060
卷号	18 期号:8
英文摘要	The Quaternary aggradation red earth (QARE) deposit in the middle reaches of the Yangtze River (MRYR) in southern China provides important evidence for understanding the paleoenvironment. However, its provenance remains controversial. In this study, the surface microtextures of grains from the QARE were observed, and compared with those of grains from the loess deposit on the Loess Plateau in northern China. The results show that the surface microtextures and morphologies of the quartz grains in the QARE are distinctly different from those in the northern loess, indicating that the deposits in the two regions have different provenances. The Gobi and deserts in inland northwestern China are not considered as the primary provenance for the QARE in southern China. It is suggested that the large areas of dry and bare river and lake beds and floodplains in the MRYR, which became exposed during glacial periods, provided the dominant source for materials in the QARE. We suggest that against the background of the middle-Pleistocene climate transition (MPT), regional aridification and a strengthened east Asian winter monsoon (driven by global cooling and the rapid uplift of the Tibetan Plateau) were primary drivers for the initiation of the QARE deposit in the MRYR region in southern China. The development of large areas of aeolian red earth deposit is direct evidence of environmental deterioration in the MRYR, indicating a cold and dry environment with frequent aeolian activity, in an area that now experiences a warm and humid subtropical monsoon climate. The results are also evidence of a regional response in the mid-subtropics of southern China to the MPT global cooling event around 1.2 Ma.
关键词	ASIAN WINTER MONSOON SUBTROPICAL CHINA ANHUI PROVINCE LOESS DEPOSITS ATLANTIC-OCEAN XIASHU LOESS ICE-VOLUME CLIMATE CLAY GEOCHEMISTRY
英文关键词	Quaternary aggradation red earth; East Asian winter monsoon; Global cooling; Uplift of the Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000681747700006
来源期刊	JOURNAL OF MOUNTAIN 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/254050
作者单位	[Fan Qing-bin; Liao Jie; Wang Tao; Feng Xiao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Fan Qing-bin; Feng Xiao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Yan Li] Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Peoples R China; [Ye Wei] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Fan Qing-bin,Liao Jie,Yan Li,et al. Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China[J]. 中国科学院西北生态环境资源研究院,2021,18(8).
APA	Fan Qing-bin,Liao Jie,Yan Li,Ye Wei,Wang Tao,&Feng Xiao.(2021).Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China.JOURNAL OF MOUNTAIN SCIENCE,18(8).
MLA	Fan Qing-bin,et al."Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China".JOURNAL OF MOUNTAIN SCIENCE 18.8(2021).