南海表层沉积物中的碳酸钙含量分布及其影响因素

张兰兰; 陈木宏; 陈忠; 向荣; 刘建国

doi:10.3799/dqkx.2010.104

Volume 35 Issue 6

Jun. 2010

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Article Navigation > Earth Science > 2010 > 35(6): 891-898

ZHANG Lan-lan, CHEN Mu-hong, CHEN Zhong, XIANG Rong, LIU Jian-guo, 2010. Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea. Earth Science, 35(6): 891-898. doi: 10.3799/dqkx.2010.104

Citation:

ZHANG Lan-lan, CHEN Mu-hong, CHEN Zhong, XIANG Rong, LIU Jian-guo, 2010. Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea. Earth Science, 35(6): 891-898. doi: 10.3799/dqkx.2010.104

Citation:

ZHANG Lan-lan, CHEN Mu-hong, CHEN Zhong, XIANG Rong, LIU Jian-guo, 2010. Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea. Earth Science, 35(6): 891-898. doi: 10.3799/dqkx.2010.104

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Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea

doi: 10.3799/dqkx.2010.104

CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received Date: 2009-10-12
Publish Date: 2010-11-01

Abstract

Abstract

This paper determines the calcium carbonate content in 213 surface sediment samples from the South China Sea (SCS) in order to have a comprehensive analysis of the distribution character of calcium carbonate and its controlling factors in surface sediments of the SCS. The results show that there are different influence parameters in distributions of calcium carbonate in various regions: In the shelf, calcium carbonate contents are low owing to largely terrigenous material input; In the slope, calcium carbonate contents are high due to abundant supply of calcareous organisms, low terrigenous material input and weak dissolvability; In the deep basin, calcium carbonate contents are very low because of strong dissolvability. According to the distribution character of calcium carbonate content in surface sediments in the SCS, it is concluded that the carbonate compensation depths (CCD) are about 3700m in the north of 14°N and about 4000m in the south of 14°N. Pearson Correlation shows that calcareous nannofossils had significant contribution to the calcium carbonate content in surface sediments in the SCS.
- calcium carbonate,
- surface sediments,
- distribution characters,
- sedimentology,
- South China Sea

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References(44)

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Distribution of Calcium Carbonate and Its Controlling Factors in Surface Sediments of the South China Sea

doi: 10.3799/dqkx.2010.104

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