Marine geology

Biogenic silica in surface sediments of the northeastern and southern South China Sea

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  • 1. South China Sea Environment Monitoring Center, State Oceanic Administration, Guangzhou 510300, China; 2. College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China; 3. Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
周鹏(1976—), 男, 河南省开封市人, 硕士, 主要从事同位素海洋学研究。

Received date: 2009-05-07

  Revised date: 2009-08-11

  Online published: 2010-07-29

Supported by

国家基础研究发展计划项目(2005CB422305)

Abstract

Biogenic silica (BSi) contents in surface sediments from the northeastern South China Sea (NSCS) and southern South China Sea (SSCS) were measured. The BSi contents (SiO2%)were in the range of 1.08%–3.01% and 0.79%–9.06%, with the means of 1.76% and 4.22% for the NSCS and SSCS, respectively. The results showed that the BSi contents in surface sediments have positive correlation with water depth of the sampling locations. The BSi contents in the NSCS had no evident correlation with minerals, ferrum ion concentrations in surface sediments or nutrients in the pore waters of sediments. The BSi contents in the SSCS had positive correlations with organic material and carbonate contents but not with clay material contents.

Cite this article

ZHOU Peng,LI Dong-mei,LIU Guang-shan,MEN Wu,JI Li-hong . Biogenic silica in surface sediments of the northeastern and southern South China Sea[J]. Journal of Tropical Oceanography, 2010 , 29(4) : 40 -47 . DOI: 10.11978/j.issn.1009-5470.2010.04.040

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