The distribution characteristics of grain size and mineral of surface sediment in the Taiwan Strait

FANG Jianyong; CHEN Jian; WANG Aijun; LAI Zhikun; WANG Weiguo; LI Yunhai; LI Dongyi; XU Yonghang; YE Xiang; YIN Xijie

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Article Navigation > Haiyang Xuebao > 2012 > 34(5): 91-99

FANG Jianyong, CHEN Jian, WANG Aijun, LAI Zhikun, WANG Weiguo, LI Yunhai, LI Dongyi, XU Yonghang, YE Xiang, YIN Xijie. The distribution characteristics of grain size and mineral of surface sediment in the Taiwan Strait[J]. Haiyang Xuebao, 2012, 34(5): 91-99.

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The distribution characteristics of grain size and mineral of surface sediment in the Taiwan Strait

Open Laboratory of Ocean and Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

Received Date: 2011-01-27
Rev Recd Date: 2012-04-16

Abstract

Abstract

Hierarchical clustering and factor analysis are respectively applied to the grain size composition of 283 surface sediment samples and the mineral analysis of 85 sediment samples collected in the Taiwan Strait. The results show that the surface sediments contain six kinds of sediment types in the Taiwan Strait, they can be divided into three types of depositional environment areas corresponding to sedimentary dynamics properties. Sixty-one kinds of minerals were found in the surface sediment samples, light minerals are main, with average content up to 97.73%,14 kinds of light minerals were found. The content of heavy minerals is low, with an average of 2.27%,47 kinds of heavy minerals were found. The most important factor that influences the mineral distribution and content variation of the surface sediment in the Taiwan Strait is matter source, followed by hydrodynamic conditions and mineral own metamorphic degree, etc. The main matter source of the sediment in the Taiwan Strait includes the detrital matter from the rivers in Fujian Province and Taiwan Province, the erosion and denuded substances from both sides of the Taiwan Stait, Hanjiang River and parts from the Changjiang River and the Qiantang River substances carried by the Zhejiang and Fujian coastal current, the residue in the Taiwan Strait of late Pleistocene and some authigenic minerals,etc.
- Taiwan Strait,
- modern sedimentary environment,
- grain size,
- heavy mineral

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References(31)

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