Paleoclimatic significance of the temperature-dependent susceptibility of Holocene loess along a NW-SE transect in the Chinese loess plateau

	Paleoclimatic significance of the temperature-dependent susceptibility of Holocene loess along a NW-SE transect in the Chinese loess plateau
	Deng, CL ; Zhu, RX ; Verosub, KL ; Singer, MJ ; Yuan, BY
刊名	GEOPHYSICAL RESEARCH LETTERS
	2000-11-15
卷号	27 期号:22 页码:3715-3718
ISSN号	0094-8276
文献子类	Article
英文摘要	We have conducted mineral magnetic investigations of samples of modem dune sand, pristine loess and present-day loess along a NW-SE transect from the northern to the central loess plateau in China. The methods used include the temperature-dependence of susceptibility (TDS) before and after citrate-bicarbonate-dithionite (CBD) treatment as well as X-ray diffraction (XRD) analysis. The XRD analyses demonstrate that magnetite and hematite both exist in the Chinese loess-paleosol sequence and its modern source area, but the TDS measurements show that magnetite is the predominant contributor to magnetic susceptibility. Maghemite is present in the pristine loess and the present-day loess due to pedogenesis. The pedogenic processes that produce the maghemite are closely linked to paleoclimate, and for this transect, precipitation appears to be the most important climatic variable. We suggest that TDS can be used as a useful method for the analysis of pedogenesis and climatic change.
WOS关键词	MAGNETIC-SUSCEPTIBILITY ; PALEOSOL SEQUENCES ; DEPOSITS ; ORIGIN
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000165418200028
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76065]
专题	中国科学院地质与地球物理研究所
通讯作者	Deng, CL
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China 2.Univ Calif Davis, Dept Geol, Davis, CA 95616 USA 3.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Deng, CL,Zhu, RX,Verosub, KL,et al. Paleoclimatic significance of the temperature-dependent susceptibility of Holocene loess along a NW-SE transect in the Chinese loess plateau[J]. GEOPHYSICAL RESEARCH LETTERS,2000,27(22):3715-3718.
APA	Deng, CL,Zhu, RX,Verosub, KL,Singer, MJ,&Yuan, BY.(2000).Paleoclimatic significance of the temperature-dependent susceptibility of Holocene loess along a NW-SE transect in the Chinese loess plateau.GEOPHYSICAL RESEARCH LETTERS,27(22),3715-3718.
MLA	Deng, CL,et al."Paleoclimatic significance of the temperature-dependent susceptibility of Holocene loess along a NW-SE transect in the Chinese loess plateau".GEOPHYSICAL RESEARCH LETTERS 27.22(2000):3715-3718.