NDLI: Geochemical character and material source of sediments in the eastern Philippine Sea

Content Provider	Springer Nature Link
Author	Xu, ZhaoKai Li, AnChun Jiang, FuQing Xu, FangJian
Copyright Year	2008
Abstract	Based upon analyses of grain-size, rare earth element (REE) compositions, elemental occurrence phases of REE, and U-series isotopic dating, the sediment characteristics and material sources of the study area were examined for the recently formed deep-sea clays in the eastern Philippine Sea. The analytical results are summarized as follows. (1) Low accumulation rate, poor sorting and roundness, and high contents of grains coarser than fine silt indicate relatively low sediment input, with localized material source without long distance transport. (2) The REE Contents are relatively high. Shale-normalized patterns of REE indicate weak enrichment in heavy REE (HREE), Ce-passive anomaly, and Eu-positive anomaly. (3) Elemental occurrence phases of REE between the sediments with and without crust are similar. REE mainly concentrate in residual phase and then in ferromanganese oxide phase. The light REE (LREE) enrichment, Ce-positive anomaly, and Eu-positive anomaly occur in residual phase. Ferromanganese oxide phase shows the characteristics of relatively high HREE content and Ce-passive anomaly. (4) There are differences in each above mentioned aspect between the sediments with and without ferromanganese crust. (5) Synthesizing the above characteristics and source discriminant analysis, the study sediments are deduced to mainly result from the alteration of local and nearby volcanic materials. Continental materials transported by wind and/or river (ocean) flows also have minor contributions.
Starting Page	923
Ending Page	931
Page Count	9
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	53
Issue Number	6
e-ISSN	18619541
Language	English
Publisher	SP Science in China Press
Publisher Date	2008-03-26
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	sediment grain-size rare earth elements discriminant function elemental occurrence phase material source eastern Philippine Sea Engineering Geosciences Life Sciences Chemistry/Food Science Physics Science
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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