摘要
The aim of this paper is to study the REE geochemistry of the Shenzhen Bay (SZB) and Dapeng Bay(DPB) modern sediments, discuss their REE distribution patterns, reveal the REE geochemical difference between the two bays which share the same material source but are deposited in different sedimentary environments, and expound their dynamic changes.It can be concluded that the SZB and DPB sediments are essentially of continental source.Their REE distribution patterns are quite different from those of Pacific pelagic sediments, but are very similar to those of South Chi-na granites.Because of different sedimentary environments prevailing in the SZB and DPB, some REE fractionation would have taken place in the sediments of the two bays.
The aim of this paper is to study the REE geochemistry of the Shenzhen Bay (SZB) and Dapeng Bay(DPB)modern sediments,discuss their REE distribution patterns,reveal the REE geochemical difference between the two bays which share the same material source but are deposited in different sedimentary environments,and expound their dynamic changes.It can be concluded that the SZB and DPB sediments are essentially of continental source.Their REE distribution patterns are quite different from those of Pacific pelagic sediments,but are very similar to those of South Chi- na granites.Because of different sedimentary environments prevailing in the SZB and DPB,some REE fractionation would have taken place in the sediments of the two bays.
关键词
稀土元素
地球化学
深圳湾
沉积环境
Shenzhen Bay
Dapeng Bay
rare-earth element
modern sediment
