Arid
DOI10.1016/j.jseaes.2011.10.010
Magnetic properties of sediments from major rivers, aeolian dust, loess soil and desert in China
Li, Chao1; Yang, Shouye1; Zhang, Weiguo2
通讯作者Yang, Shouye
来源期刊JOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
EISSN1878-5786
出版年2012
卷号45页码:190-200
英文摘要

The continent of China delivers huge terrigenous sediments to the East Asian marginal seas and northwest Pacific Ocean by riverine and aeolian inputs, which exerts a great impact on marine sedimentation, primary productivity and biogeochemical cycle. In this study, magnetic properties of the sediments from the Changjiang and Huanghe river systems were investigated, in order to provide potential provenance tracers. Besides, the top soil from the Loess Plateau, Taklimakan desert sand and dust storm particles were comparatively studied to reveal the controls of magnetic properties in various depositional environments.


The Changjiang sediment is characterized by the highest concentration of magnetic minerals and the largest variations for most magnetic parameters, while the Huanghe sediment has much lower content of magnetic minerals. The loess soil sediment yields the highest frequency-dependent susceptibility chi(fd)%, while the aeolian dust has similar magnetic susceptibility but higher saturation isothermal remnant magnetization and lower anhysteretic remnant magnetization chi(ARM). The desert sand has the lowest values of all magnetic parameters, indicating the lowest ferrimagnetic mineral concentration with coarser grain size. The magnetic properties of the Changjiang sediments are primarily determined by the diversity of lithology in its large drainage basin, while the sediment grain size basically accounts for the variation of magnetic parameters in the Huanghe sediment. The gradual increase of chi(fd)% towards the lower reaches suggests it may potentially indicate grain size fractionation in the catchments. Although some magnetic parameters can apparently discriminate the origins of fluvial and aeolian sediments, reliable magnetic proxy for distinguishing sediment origins in marine environment can only be established if hydrodynamic differentiation and post-depositional diagenetic alteration of magnetic minerals are fully understood. (C) 2011 Elsevier Ltd. All rights reserved.


英文关键词Magnetic property River sediment Loess-paleosol Desert Dust China
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000300203300017
WOS关键词TAKLIMAKAN DESERT ; YANGTZE-RIVER ; SOURCE REGIONS ; YELLOW-RIVER ; CHANGJIANG ; PROVENANCE ; ESTUARY ; SEA ; DISCRIMINATION ; SUSCEPTIBILITY
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/173345
作者单位1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China;
2.E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China
推荐引用方式
GB/T 7714
Li, Chao,Yang, Shouye,Zhang, Weiguo. Magnetic properties of sediments from major rivers, aeolian dust, loess soil and desert in China[J],2012,45:190-200.
APA Li, Chao,Yang, Shouye,&Zhang, Weiguo.(2012).Magnetic properties of sediments from major rivers, aeolian dust, loess soil and desert in China.JOURNAL OF ASIAN EARTH SCIENCES,45,190-200.
MLA Li, Chao,et al."Magnetic properties of sediments from major rivers, aeolian dust, loess soil and desert in China".JOURNAL OF ASIAN EARTH SCIENCES 45(2012):190-200.
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