High-resolution magnetic stratigraphy of fluvio-lacustrine succession in;the Nihewan Basin, China

doi:10.1016/j.quascirev.2003.11.007

	High-resolution magnetic stratigraphy of fluvio-lacustrine succession in;the Nihewan Basin, China
	Wang, XS 5; Yang, ZY ; Lovlie, R ; Min, LR
刊名	QUATERNARY SCIENCE REVIEWS
	2004
卷号	23 期号:9-10 页码:1187-1198
ISSN号	0277-3791
DOI	10.1016/j.quascirev.2003.11.007
英文摘要	A detailed paleomagnetic and rock magnetic investigation of Nihewan fluvio-lacustrine deposits at Tai'ergou (40degrees12'52"N, 114degrees38'22"E), Hebei Province of North China, has been carried out. The results show that the magnetic mineralogy is dominated by magnetite and high-coercivity hematite. Maghemite occurs mainly in the grayish-yellow/yellowish-brown silt layers and fine-grained yellow sand beds, either as a detrital component or as the result of low-temperature oxidation of magnetite. Distinct variations in magnetic susceptibility are always associated with changes in lithology, i.e., color and grain size of the sediments, reflecting the frequent lowering/ascendance of the water table level and change of sedimentation environment. Based on paleomagnetic results of thermal and AF demagnetization experiments, we present an unambiguous polarity stratigraphy for the exposed lacustrine-fluvial sediments at Tai'ergou consisting of three normal magnetozones including the Brunhes chron, the Jaramillo and Olduvaj subchrons, and two reversed zones belonging to the Matuyama chron. This Suggests that the Nihewan Basin carries a long, continuous stratigraphic record. albeit varying in sedimentation facies and sedimentation rates. Consequently, we concluded that the Nihewan lacustrine sediments at Tai'ergou commenced depositing at the onset of the Olduvai subchron, and the Tai'ergou Section can be used Lis a dating tool for biochronological and high-resolution magnetostratigraphic purposes. (C) 2003 Elsevier Ltd. All rights reserved.
学科主题	第四纪地质
WOS关键词	QINGHAI-XIZANG PLATEAU ; LOESS DEPOSITS ; MATUYAMA CHRON ; FIELD ; REVERSALS ; TIMESCALE ; HUMANS ; ORIGIN ; UPLIFT
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000221580200014
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37833]
专题	中国地质科学院地质研究所
作者单位	1.CAGS, Inst Geomech, Beijing 100081, Peoples R China. 2.Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China. 3.Univ Bergen, Dept Earth Sci, N-5007 Bergen, Norway. 4.CAGS, Inst Geol, Beijing 100037, Peoples R China. 5.中国地质科学院地质力学研究所
推荐引用方式 GB/T 7714	Wang, XS,Yang, ZY,Lovlie, R,et al. High-resolution magnetic stratigraphy of fluvio-lacustrine succession in;the Nihewan Basin, China[J]. QUATERNARY SCIENCE REVIEWS,2004,23(9-10):1187-1198.
APA	Wang, XS,Yang, ZY,Lovlie, R,&Min, LR.(2004).High-resolution magnetic stratigraphy of fluvio-lacustrine succession in;the Nihewan Basin, China.QUATERNARY SCIENCE REVIEWS,23(9-10),1187-1198.
MLA	Wang, XS,et al."High-resolution magnetic stratigraphy of fluvio-lacustrine succession in;the Nihewan Basin, China".QUATERNARY SCIENCE REVIEWS 23.9-10(2004):1187-1198.