Research on sedimentations and material sources in the eastern South China Sea

ZHANG Fu-yuan; ZHANG Xiao-yu; YANG Qun-hui; LIU Chuan-lian

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ZHANG Fu-yuan, ZHANG Xiao-yu, YANG Qun-hui, LIU Chuan-lian. Research on sedimentations and material sources in the eastern South China Sea[J]. Haiyang Xuebao, 2005, 27(2): 79-90.

Citation:

ZHANG Fu-yuan, ZHANG Xiao-yu, YANG Qun-hui, LIU Chuan-lian. Research on sedimentations and material sources in the eastern South China Sea[J]. Haiyang Xuebao, 2005, 27(2): 79-90.

ZHANG Fu-yuan, ZHANG Xiao-yu, YANG Qun-hui, LIU Chuan-lian. Research on sedimentations and material sources in the eastern South China Sea[J]. Haiyang Xuebao, 2005, 27(2): 79-90.

Citation:

ZHANG Fu-yuan, ZHANG Xiao-yu, YANG Qun-hui, LIU Chuan-lian. Research on sedimentations and material sources in the eastern South China Sea[J]. Haiyang Xuebao, 2005, 27(2): 79-90.

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Research on sedimentations and material sources in the eastern South China Sea

1.
Key Laboratory of Submarine Science of State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Zhejiang University, Hangzhou 310012, China
3.
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
4.
Tongji University, Shanghai 200092, China

Received Date: 2002-09-06
Rev Recd Date: 2003-02-21

Abstract

Abstract

One hundred and ninety-five surface sediment samples and 24 piston core samples were collected from the eastern South China Sea in 1998.Based on these samples,the study of sedimentation and sediment source shows that:(1)The eastern South China Sea has the typical sedimentary charecteristics of the marginal sea;the sediments are composed of the terrigenous clasts,biogenous debris,volcaniclasts and turbidity deposits,and sedimentations are multiple origins;(2)the interm ediate-basic constituent of sediments in the north area of Huangyan Island is 23.2% and the terrigeno us fraction is 76.8%,the theoretial estimates of the two com ponents are quite consistent with the distributions of the submarine sediments.;(3)the mineral analysis shows that there are four mineral assemblages of terrigenous minerals, mixed minerals,authigenic ferromanganese minerals and intermediate-basic volcanogenic minerals,and the mineral constituents and content differences reflect the changes of the material sources and the sedimentary environments;(4)the constituent analysis of being greater than 0.063 mm sediments shows biogenous debris is 66.97%,of which the calcareo us fraction and siliceous one are 23.43% and 43.54% respectively.
- eastern South China Sea,
- sedimentation,
- material source,
- Sr isotope

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References(23)

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