气候变化领域集成服务门户(CCPortal): Regional variations in magnetic properties of surface sediments in the Qaidam Basin and their paleoenvironmental implications

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DOI	10.1016/j.jappgeo.2015.09.006
	Regional variations in magnetic properties of surface sediments in the Qaidam Basin and their paleoenvironmental implications
	Zan, Jinbo; Fang, Xiaomin; Yan, Maodu; Zhang, Zhiguo; Zhang, Dawen
通讯作者	Zan, JB (通讯作者)
发表日期	2015
ISSN	0926-9851
EISSN	1879-1859
起始页码	86
结束页码	93
卷号	122
英文摘要	The Qaidam Basin is the largest intermontane basin on the northeastern edge of the Tibetan Plateau. At present, systematic rock magnetic studies of surface sediments in this basin are scarce because of the vast area and poor accessibility. In this paper, multi-parameter rock magnetic investigations of surface sediments from a wide area in the Qaidam Basin have been conducted. We find that pseudo-single domain and multidomain ferrimagnetic minerals (i.e. magnetite and maghemite) dominate the magnetic properties of surface sediments in the basin. Surface sediments from the western part of the basin exhibit the lowest magnetic concentration values chi, chi ARM and SIRM. In contrast, samples from the upwind sides of the basin and the eastern margin of the basin show the highest magnetic concentration values. The spatial distribution of magnetic parameters in the Qaidam Basin suggest that wind environments and the supply of clastic sediments possibly provide the main control on the regional variations of magnetic parameters. Our results also provide new insights into the mechanisms of magnetic variations of late Pliocene lacustrine sediments in the western Qaidam Basin. (C) 2015 Elsevier B.V. All rights reserved.
关键词	CENOZOIC TECTONIC EVOLUTION LOESS-PALEOSOL SEQUENCES CHINESE LOESS TIBETAN PLATEAU GRAIN-SIZE MAGNETOSTRATIGRAPHY QUATERNARY SECTION UPLIFT
英文关键词	Environmental magnetism; Surface sediments; Qaidam Basin; Magnetic susceptibility; Source materials
语种	英语
WOS研究方向	Geology ; Mining & Mineral Processing
WOS类目	Geosciences, Multidisciplinary ; Mining & Mineral Processing
WOS记录号	WOS:000364268900009
来源期刊	JOURNAL OF APPLIED GEOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258420
推荐引用方式 GB/T 7714	Zan, Jinbo,Fang, Xiaomin,Yan, Maodu,et al. Regional variations in magnetic properties of surface sediments in the Qaidam Basin and their paleoenvironmental implications[J]. 中国科学院青藏高原研究所,2015,122.
APA	Zan, Jinbo,Fang, Xiaomin,Yan, Maodu,Zhang, Zhiguo,&Zhang, Dawen.(2015).Regional variations in magnetic properties of surface sediments in the Qaidam Basin and their paleoenvironmental implications.JOURNAL OF APPLIED GEOPHYSICS,122.
MLA	Zan, Jinbo,et al."Regional variations in magnetic properties of surface sediments in the Qaidam Basin and their paleoenvironmental implications".JOURNAL OF APPLIED GEOPHYSICS 122(2015).