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Cite this paper:
Wang Liang, Fan Dejiang, Li Weiran, Zhang Xilin, Chen Bin, Tian Yuan. The variation of clay minerals contents on the inner shelf of the East China Sea in the last one hundred years and its environmental implication[J]. Haiyang Xuebao, 2015, 37(5): 87-100

The variation of clay minerals contents on the inner shelf of the East China Sea in the last one hundred years and its environmental implication

Wang Liang1,2, Fan Dejiang1, Li Weiran1, Zhang Xilin1,3, Chen Bin1,3, Tian Yuan1
1. Key Lab of Submarine Geosciences and Technology in the Ministry of Education, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;
2. Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;
3. Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao 266071, China
Abstract:
The modern depocenter in the East China Sea is the mud area on the inner shelf,and the clay fraction of the sediments in the area is the main component. In the study of sedimentology,the clay minerals assemblage was widely used as an indicator of provenance and transportation of particulates. In this study,we used the method of XRD to study the variation of clay mineral contents in two gravity cores collected from the mud area. The clay minerals,together with the analysis of grain size and radioactive dating on the samples,have been used to discuss their environmental implications. The result shows that sediments in the mud area of East China Sea are mainly derived from the supply of Changjiang River,and contain a little from the Huanghe River and Oujiang River. And,clay mineral records have exhibited significant changes in the last one hundred years,which may be influenced by the fluctuations of East Asian Monsoon and the decreasing of sediment discharge of the Changjiang River.
Key words:    inner shelf in the East China Sea    clay minerals    provenance    East Asian Monsoon    sediment discharge of the Changjiang River   
Received: 2013-12-25
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Articles by Wang Liang
Articles by Fan Dejiang
Articles by Li Weiran
Articles by Zhang Xilin
Articles by Chen Bin
Articles by Tian Yuan
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