Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau

	Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau
	Guo, B ; Zhu, RX ; Bai, LX ; Florindo, F
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2001-12-01
卷号	44 期号:12 页码:1099-1109
关键词	loess-paleosol rock magnetism paleoclimate
ISSN号	1006-9313
文献子类	Article
英文摘要	We have conducted detailed rock magnetic experiments on samples from loess unit 8 (L8) and paleosol unit 8 (S8) in Jingbian, Yichuan and Duanjiapo loess sections along an N-S transect in the Chinese Loess Plateau. Major rock magnetic results are as follows: ( i) An increase of high field susceptibility (chi(h)) in the same level of loess or paleosol from north to south is observed, suggesting an enhancement of pedogenesis. (ii) The low field susceptibility (chi(L)) in loess unit L8 is almost the same in three sections. In contrast, the chi(L) of paleosol unit S8 in Yichuan is highest, and the chi(L) of Duanjiapo is lower than that in Yichuan section, suggesting that there is not correlation between the chi(L) and the degree of pedogenesis in loess-paleosols. (iii) With the increasing of chi(L), both the contents of the superparamagnetic (SP) and the ferrimagnetic grains in loess-paleosol increase, however, the enhancement of magnetic susceptibility is probably dependent more on the increase-of the ferrimagnetic concentration than on a change in the grain size. (iv) The content of the maghemite in loess unit 8 increases from the northern to the southern part of the Chinese Loess Plateau, and is positively correlated with the pedogenesis of the loess.
WOS关键词	NORTH-CENTRAL CHINA ; SUSCEPTIBILITY ; DEPOSITS ; SECTION ; RECORD ; ORIGIN ; PALEOCLIMATE ; SEQUENCES
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000175098300005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/77147]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhu, RX
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China 2.Ist Nazl Geofis, I-00143 Rome, Italy 3.Beijing Seismol Bur, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Guo, B,Zhu, RX,Bai, LX,et al. Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44(12):1099-1109.
APA	Guo, B,Zhu, RX,Bai, LX,&Florindo, F.(2001).Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44(12),1099-1109.
MLA	Guo, B,et al."Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44.12(2001):1099-1109.