| REE Geochemistry of Surficial Sediments from the Yellow Sea of China |
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| 作者姓名： | 王金士 |
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| 作者单位： | InstituteofOceanography,AcademiaSinica,Qingdao |
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| 摘 要： | REE geochemical studies of surficial sediment samples from the Yellow Sea of China have shown:(1)The average content of RE2O3 in the Yellow Sea sediments is 175 ppm,close to that in the East China Sea sediments.The REE distribution patterns in the Yellow Sea sediments are also similar to anomalies.These REE characteristics are typical of the continental crust.(2)The contents of REE are controlled mainly by the sediment grain size,i.e.,REE contents increase gradually with decreasing sediment grain size.REE are present mainly in clay minerals.In addition,REE contents are controlled obviously by heavy minerals.REE abundances in heavy minerals are much greater than those in light minerals.(3)Correlation analysis shows that REE have a close relationship with siderophile elements,especially Ti,which has the largest correlation coefficient relative to REE.Terrigenous clastic materials subjected to weathering and transport are suggested to be the main source of REE in the Yellow Sea sediments.
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| 关 键 词： | 稀土元素 地球化学 黄海 中国 表层沉积物 重矿物 海洋沉积 |
REE geochemistry of surficial sediments from the Yellow Sea of China |
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| Wang Jintu.REE Geochemistry of Surficial Sediments from the Yellow Sea of China[J].Chinese Journal of Geochemistry,1991,10(1):88-98. |
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| Authors: | Wang Jintu |
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| Institution: | (1) Institute of Oceanography, Academia Sinica, Qingdao |
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| Abstract: | REE geochemical studies of surficial sediment samples from the Yellow Sea of China have shown: (1) The average content of
RE2O3 in the Yellow Sea sediments is 175 ppm. close to that in the East China Sea sediments. The REE distribution patterns in the
Yellow Sea sediments are also simliar to those in the East China Sea sediments, both being characterized by negative slopes
and negative Eu anomalies. These REE characteristics are typical of the continental crust. (2) The contents of REE are controlled
mainly by the sediment grain size. i. e., REE contents increase gradually with decreasing sediment grain size. REE are present
mainly in clay minerals. In addition, REE contents are controlled obviously by heavy minerals. REE abundances in heavy minerals
are much greater than those in light minerals. (3) Correlation analysis shows that REE have a close relationship with siderophile
elements, especially Ti, which has the largest correlation coefficient relative to REE. Terrigenous clastic materials subjected
to weathering and transport are suggested to be the main source of REE in the Yellow Sea sediments. |
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