Quantitative measurements on the paleo-weathering intensity of the loess-soil sequences and implication on paleomonsoon

	Quantitative measurements on the paleo-weathering intensity of the loess-soil sequences and implication on paleomonsoon
	Hao, QZ; Guo, ZT
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2001-06-01
卷号	44 期号:6 页码:566-576
关键词	loess paleo-weathering intensity East Asian summer monsoon FeD/FeT ratio magnetic susceptibility
ISSN号	1006-9313
文献子类	Article
英文摘要	The loess-soil sequences in northern China provide a near continuous record of Quaternary paleoclimate. The pedogenetic intensity of the sequences is closely linked with the variations of the East Asian summer monsoon. In this study, 2181 samples from the Changwu and Xifeng loess sections are analyzed and two high-resolution paleo-weathering timeseries of the last 1.2 Ma are generated, using the ratio of CBD extractable free Fe2O3(FeD) versus the total iron (FeT), This new index is compared with micromorphological features, low-frequency magnetic susceptibility, frequency-dependent magnetic susceptibility, and the Rb/Sr ratio([5,6]). The results suggest that the FeD/FeT ratio is able to better reflect the degree of soil development. Since the chemical weathering of loess in the Loess Plateau region mainly depends upon the summer precipitation and temperature under modern climate condition, which are closely associated with strength of summer monsoon, and the chemical weathering intensity of loess primarily reflects the variations of the summer monsoon circulation.
WOS关键词	MAGNETIC-SUSCEPTIBILITY RECORD ; CHINESE LOESS ; NORTH-ATLANTIC ; PLATEAU ; MONSOON ; CLIMATE ; SEPARATION ; MAGHEMITE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000169617400010
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/77193]
专题	中国科学院地质与地球物理研究所
通讯作者	Guo, ZT
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Hao, QZ,Guo, ZT. Quantitative measurements on the paleo-weathering intensity of the loess-soil sequences and implication on paleomonsoon[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44(6):566-576.
APA	Hao, QZ,&Guo, ZT.(2001).Quantitative measurements on the paleo-weathering intensity of the loess-soil sequences and implication on paleomonsoon.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44(6),566-576.
MLA	Hao, QZ,et al."Quantitative measurements on the paleo-weathering intensity of the loess-soil sequences and implication on paleomonsoon".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44.6(2001):566-576.