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- W2381796145 abstract "This paper analyzes the grain-size and REEs for core DD2 sediment,located at north of the mud area off Zhejiang-Fujian provinces.It also discusses the relation between grain-size and content of REEs,characteristics of REEs component and their fractionations and between the core and those of Yangtze River and Yellow River sediment.It is found that the core DD2 contains obviously a larger number of HREEs and LREEs than the Yangtze and Yellow rivers,with the sediments increasing with the fining of grain-sizes and that its LREEs is richer than HREEs owing to enrichment of Ce.While the values of(La/Lu)N,(La/Yb)N and(Gd/Yb)N in core DD2 sediments change less with the depth,a bit less than those in the Yellow River sediment and much less than those in the Yangtze River sediment.However,value of(La/Sm)N changes greatly with depth,and is more approximate to that in the Yangtze River than that in the Yellow River.It shows fractionations between LREEs and HREEs,and those between HREEs in core DD2 are weaker than those in the Yangtze and the Yellow rivers,especially for HREEs.However,fractionations in core DD2 sediment between LREEs are stronger than those in the Yangtze and Yellow rivers.Average values of δ(Ce) and δ(Eu),0.92 and 0.66 respectively,indicate that Ce is a bit depleted and Eu is strongly depleted.No obvious changes of characteristics of REEs in core DD2 sediment are discovered before/after the Yellow River's shifting.Therefore,it is difficult to identify the source of core DD2 sediments according to its REEs composition because of small REE difference between the Yangtze and Yellow rivers and their contents controlled by grain-size,for example,(La/Lu)N and(La/Yb)N decrease with grain-size fining." @default.
- W2381796145 created "2016-06-24" @default.
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- W2381796145 date "2007-01-01" @default.
- W2381796145 modified "2023-09-28" @default.
- W2381796145 title "REE Geochemistry of the Mud off Zhejiang-Fujian Provinces" @default.
- W2381796145 hasPublicationYear "2007" @default.
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