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- OpenAccess
Mineral-geochemical Association in Bottom Sediments of the East China Sea
東海海床沈積物礦物與地球化學之相關性
並列摘要
Geochemistry and mineralogy of grain-size fractions from Holocene sediments of the East China Sea and the adjacent regions have been investigated. The correlation between minerals and chemical element contents was determined for both sandy and clayey fractions. The averages contents of rock-forming and some rare elements were found changing from coarse to fine fractions with the decrease in SiO2 and the increase in actually all other elements. In general, geochemical differences between coarses and fines fractions are equivalent to acidic and intermediate (or basic) igneous rock. Statistical cluster analysis for rock-forming and some rare elements in 1-5μm fractions revealed three zones having different sediment sources. The central zone occupied the whole outer East China Sea Shelf. Sediments (1-5μm fraction) supply sources for it are terrigenous discharge from Taiwan Island and the Philippine Archipelago.
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延伸閱讀
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