REE geochemistry of sea-floor sediments of the continental shelf of the East China Sea |
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Authors: | Xianjue Wang Yuwei Chen Jianquan Lei Mingqing Wu Yiyang Zhao |
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Institution: | 1. Institute of Geochemistry, Academia Sinica, China 2. Institute of Oceanology, Academia Sinica, China
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Abstract: | REE geochemistry has been studied of sea-floor sediments of the continental shelf of the East China Sea. The average content of RE2O3 is estimated at 175 ppm based on 68 sediment samples from the continental shelf. The absolute concentrations of Y and La-Lu in the sediments are shown in Table 3. The REE distribution patterns in the sediments demonstrate a distinct depletion in Eu and a negative slope. It is considered that the fragments of Mesozoie intermediate-acid igneous rocks widely distributed in southeastern China are the main source of REE in sea-floor sediments of the East China Sea continental shelf. |
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