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      Distribution Patterns of Major and Trace Elements and Provenance of Surface Sediments on the Continental Shelf off Western Guangdong Province and Northeastern Hainan Island

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          A coupled approach based on grain size and geochemical elements is used to trace the provenance of surface sediments and to confirm the distribution patterns of grain size and elements on the continental shelf off western Guangdong Province and northeastern Hainan Island. The mean grain size ranges from 0.05 φ to 7.28 φ with a mean value of 5.60 φ. The average concentrations of major elements descend in the order of SiO 2 > Al 2O 3 > CaO > Fe 2O 3 > K 2O > MgO > Na 2O > TiO 2 > P 2O 5 > MnO, while those of trace elements exhibit a descending order of Sr > Rb > Zn > V > Cr > Pb > Ni > Cu > As > Cd. On the basis of the distribution patterns of elements and results of statistical analysis, the study area is classified into three zones. Zone I locates on the continental shelf off western Guangdong Province, and the sediments are mainly from Pearl River, Taiwanese rivers, and small rivers nearby. Zone II locates in the eastern exit of Qiongzhou Strait and the coastal area off Leizhou Peninsula, and the sediments are mainly from the erosion products of Qiongzhou Strait and Hainan Island. Zone III locates off the eastern Hainan Island and the continental shelf deeper than −50 m isobaths, and the sediments are mainly from Hainan Island and coral reef. The influence from open water should also be considered. Results indicate that the grain size is the main controlling factor for major and trace element contents and that anthropogenic impact and biological activity also play an important role in the distribution of these elements.

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          Author and article information

          Journal of Ocean University of China
          Science Press and Springer (China )
          06 July 2019
          01 October 2019
          : 18
          : 4
          : 849-858
          1Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China
          2Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
          3Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
          4Center for Computation and Technology, Louisiana State University, Baton Rouge, LA 70803, USA
          5Coastal Studies Institute, Louisiana State University, Baton Rouge, LA 70803, USA
          6Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China
          Author notes
          *Corresponding authors: GE Qian and XU Dong
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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