干旱区生态环境知识资源中心(Arid): Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China

Arid

	Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China
	Fan Qingbin; Liao Jie; Li Yan; Ye Wei; Wang Tao; Feng Xiao
来源期刊	山地科学学报
ISSN	1672-6316
出版年	2021
卷号	18 期号:8 页码:1672-6316
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.
英文关键词	Quaternary aggradation red earth East Asian winter monsoon Global cooling Uplift of the Tibetan Plateau
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:7025854
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365217
作者单位	Fan Qingbin, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences;;, Lanzhou;;, ;;Beijing 730000;;100049.; Feng Xiao, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences;;, Lanzhou;;, ;;Beijing 730000;;100049.; Liao Jie, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Wang Tao, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Li Yan, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.; Ye Wei, College of Geogra...
推荐引用方式 GB/T 7714	Fan Qingbin,Liao Jie,Li Yan,et al. Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China[J],2021,18(8):1672-6316.
APA	Fan Qingbin,Liao Jie,Li Yan,Ye Wei,Wang Tao,&Feng Xiao.(2021).Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China.山地科学学报,18(8),1672-6316.
MLA	Fan Qingbin,et al."Quartz grain surface microtextural evidence for provenance of the Quaternary aggradation red earth deposit, southern China".山地科学学报 18.8(2021):1672-6316.