Distribution of Rb and Sr in the Luochuan loess-paleosal sequence of China during the last 800 ka - Implications for paleomonsoon variations

doi:10.1007/BF02878959

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（1985-2004）

	Distribution of Rb and Sr in the Luochuan loess-paleosal sequence of China during the last 800 ka - Implications for paleomonsoon variations
	Chen, J; An, ZS; Wang, YJ; Ji, JF; Chen, Y; Lu, HY
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	1999-06
卷号	42 期号:3 页码:225-232
关键词	loess Rb/Sr ratio paleomonsoon variation chemical weathering
DOI	10.1007/BF02878959
文献子类	Article
英文摘要	The concentrations of Rb and Sr, and magnetic susceptibility in loess and paleosol samples from the Luochuan profile have been measured. The loess units deposited in different geological periods display a very similar pattern of Rb and Sr distribution while paleosol units exhibit a dramatic increase in the Rb/Sr ratio, ranging from 20% to 120% in increase amplitude. Owing to different geochemical behavior of the two elements. Rb appears to be immobile while Sr appears to be mobile in the processes of weathering and pedogenesis. So variations of the Rb/Sr ratio in the loess-paleosol sequences could reflect intensities of weathering and pedogenesis, thus recording the relative wind strength of the East Asian summer monsoon circulation. This could be supported by the high degree of correlation between the Rb/Sr ratio and the magnetic susceptibility. A continuous record of the Rb/Sr ratio in the Luochuan profile over the last 800 ka bears a striking resemblance to the delta(18)O curve of the deep sea sediments and is in accordance with the the SPECMAP chronology. Such similarity between the terrestrial and the deep sea records suggests that variability in global ice volume is a primary dynamic factor controlling long-term changes of the East Asian summer monsoon intensity.
学科主题	Geology
WOS关键词	MONSOON
WOS研究方向	Geosciences, Multidisciplinary
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000081744900001
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/11951]
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Chen, J,An, ZS,Wang, YJ,et al. Distribution of Rb and Sr in the Luochuan loess-paleosal sequence of China during the last 800 ka - Implications for paleomonsoon variations[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,1999,42(3):225-232.
APA	Chen, J,An, ZS,Wang, YJ,Ji, JF,Chen, Y,&Lu, HY.(1999).Distribution of Rb and Sr in the Luochuan loess-paleosal sequence of China during the last 800 ka - Implications for paleomonsoon variations.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,42(3),225-232.
MLA	Chen, J,et al."Distribution of Rb and Sr in the Luochuan loess-paleosal sequence of China during the last 800 ka - Implications for paleomonsoon variations".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 42.3(1999):225-232.