Rock magnetic properties of the fine-grained sediment on the outer shelf of the East China Sea: implication for provenance | |
Liu, H; Zhu, RX; Li, GX | |
刊名 | MARINE GEOLOGY |
2003-02-15 | |
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 |
文献子类 | Article |
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. |
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://ir.iggcas.ac.cn/handle/132A11/78133] |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Liu, H |
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 |
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. |
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