Rock magnetic properties of the fine-grained sediment on the outer shelf;of the East China Sea: implication for provenance

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	Rock magnetic properties of the fine-grained sediment on the outer shelf;of the East China Sea: implication for provenance
	Liu, H 5; Zhu, RX ; Li, GX
刊名	MARINE GEOLOGY
	2003
卷号	193 期号:3-4 页码:195-206
关键词	marine sediments environmental magnetism sediment sources East China Sea
ISSN号	0025-3227
英文摘要	The rock magnetic properties of surface sediments from the fine-grained depositional area on the outer shelf of the East China Sea, an area surrounded by sands, were investigated with a view to providing information on the sediment provenance. Multiple magnetic parameters such as magnetic susceptibility, anhysteretic remanent magnetization, saturation remanent magnetization (SIRM), coercivities of SIRM, and S ratios (relative abundance of low-coercivity magnetic minerals) were measured for all 179 surface samples, and partial representative samples were examined for their magnetic hysteresis parameters, temperature dependence of magnetic susceptibility and X-ray diffraction spectra. Our research indicates that the magnetic mineralogy is dominated by magnetite with a small amount of hematite and is primarily of a pseudo-single-domain to multidomain nature with a detrital origin. The magnetic concentration in the study area generally decreases to the east or southeast accompanied by magnetic particle fining to the east or northeast. The geographic pattern of magnetic properties is most reasonably explained by a major source of sediment jointly from the erosion of the old Huanghe River deposit and the discharge of the Changjiang River. The rock magnetic data facilitate understanding of the transport mechanism of fine-grained sediments in the outer shelf of the East China Sea. (C) 2002 Elsevier Science B.V. All rights reserved.
学科主题	海洋地质学
WOS关键词	ENVIRONMENTAL MAGNETISM ; MARINE-SEDIMENTS ; NORTH-ATLANTIC ; GREIGITE ; FE3S4 ; LAKE ; PALEOINTENSITY ; IDENTIFICATION ; RECORDS ; DEEP
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000181296600003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37554]
专题	中国地质调查局青岛海洋地质研究所
作者单位	1.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China. 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China. 3.China Geol Survey, Res Ctr Coastal Geol, Qingdao 266071, Peoples R China. 4.Ocean Univ Qingdao, Coll Marine Geosci, Qingdao 266003, Peoples R China. 5.中国地质调查局青岛海洋地质研究所
推荐引用方式 GB/T 7714	Liu, H,Zhu, RX,Li, GX. Rock magnetic properties of the fine-grained sediment on the outer shelf;of the East China Sea: implication for provenance[J]. MARINE GEOLOGY,2003,193(3-4):195-206.
APA	Liu, H,Zhu, RX,&Li, GX.(2003).Rock magnetic properties of the fine-grained sediment on the outer shelf;of the East China Sea: implication for provenance.MARINE GEOLOGY,193(3-4),195-206.
MLA	Liu, H,et al."Rock magnetic properties of the fine-grained sediment on the outer shelf;of the East China Sea: implication for provenance".MARINE GEOLOGY 193.3-4(2003):195-206.