The effect of weathering on the grain-size distribution of red soils in south-eastern China and its climatic implications

doi:10.1016/j.jseaes.2014.08.027

	The effect of weathering on the grain-size distribution of red soils in south-eastern China and its climatic implications
	Liu, Caicai 1,2; Deng, Chenglong 2
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2014-11-01
卷号	94 页码:94-104
关键词	Grain size Red soils in south-eastern China Weathering
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2014.08.027
文献子类	Article
英文摘要	Particle-size analysis is a useful way to determine the source and deposition of sediments. However, there are inconsistencies when this method is used to constrain the origin of the red soils in south-eastern China. To address this problem, we performed a detailed grain-size analysis of two red soil sequences in Xuancheng and Qiliting located along the lower reaches of the Yangtze River. By comparing their particle-size characteristics with those of the loess on the Loess Plateau in northern China, we found that the aeolian samples plot in a particular zone in the C-M (grain size of the cumulative 1% versus median grain size) plot and cluster nearer the lower left corner of the plot as their degree of weathering increases. The grain-size features suggest that the onset of large-scale aeolian deposition along the lower reaches of the Yangtze River occurred at approximately 0.8 Ma. Although both sedimentary sorting and post-depositional weathering control the grain-size variations in the deposits, the extremely strong weathering due to the humid, warm climate along the lower reaches of the Yangtze River primarily modified the grain-size distributions of the primary red soil deposits. Strong weathering increased the very fine silt (2-5 mu m) fraction and decreased the coarse (>63 mu m) fraction. We also found that certain grain-size parameters of the red soils varied with the weathering intensity, which can be used as indicators of palaeoclimate variations. The grain size variations in both the Qiliting and Xuancheng sequences suggest that the mid-Pleistocene climate transition (MPT) may have affected the lower reaches of the Yangtze River at 0.9 Ma. (C) 2014 Elsevier Ltd. All rights reserved.
WOS关键词	CLAY-LOESS SEQUENCE ; NORTH-ATLANTIC ; ASIAN MONSOON ; SUBTROPICAL CHINA ; AFRICAN CLIMATE ; ANHUI PROVINCE ; AEOLIAN ORIGIN ; XIASHU LOESS ; PLATEAU ; EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000343351000008
资助机构	Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; Institute of Geology, CEA Grant(IGCEA1218) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040) ; National Natural Science Foundation of China(41104040)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86332]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, Caicai
作者单位	1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Caicai,Deng, Chenglong. The effect of weathering on the grain-size distribution of red soils in south-eastern China and its climatic implications[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,94:94-104.
APA	Liu, Caicai,&Deng, Chenglong.(2014).The effect of weathering on the grain-size distribution of red soils in south-eastern China and its climatic implications.JOURNAL OF ASIAN EARTH SCIENCES,94,94-104.
MLA	Liu, Caicai,et al."The effect of weathering on the grain-size distribution of red soils in south-eastern China and its climatic implications".JOURNAL OF ASIAN EARTH SCIENCES 94(2014):94-104.