| 南海中北部海域晚更新世以来沉积速率及其变化机制 |
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| 引用本文： | 许志峰.南海中北部海域晚更新世以来沉积速率及其变化机制[J].台湾海峡,1995,14(4):356-360. |
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| 作者姓名： | 许志峰 |
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| 作者单位： | 国家海洋局第三海洋研究所!厦门，361005 |
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| 摘 要： | 本文根据沉积速率变化受沉积环境制约机理，计算了南海中北部海域晚更新世以来沉积速率的变化，分析该海域沉积环境的特征。通过７个粒状样沉积速率的计算与分析，认为晚更新世以来沉积速率明显高于典型的大洋沉积环境的沉积速率，平均为１０．２ｃｍ／ｋａ，北部海域平均沉积速率为１１．３ｃｍ／ｋａ，南部海域平均沉积速率为６．０ｃｍ／ｋａ，表现为近陆区沉积速率高，远离大陆速率低的特点。
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| 关 键 词： | 沉积速率 变化机制 晚更新世 南海 沉积物 |
Sedimentary rates and changing mechanism in northern and middle South China Sea since Late Pleistocene |
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| Xu Zhifeng.Sedimentary rates and changing mechanism in northern and middle South China Sea since Late Pleistocene[J].Journal of Oceanography In Taiwan Strait,1995,14(4):356-360. |
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| Authors: | Xu Zhifeng |
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| Abstract: | Based on the rnechanism that the sedimentary rates are controlled by the sedimentary ,this calculates the changes of the sedimentary rates and analyzes the characteristics of the sedimenlary environments in the southern and northern parts of the South China Sea since the Late Pleislocene. It is shown that the sedimentary rate in the study area (10. 2cm/ka in average ), according to the calculation and analysis of that in seven cores, is distinctly higher than that in the typical oceanic environments. The average sedimentary rate of 11. 3cm/ka in the northern and 6. 0cm/ka in the southern Parts of the study area indicates a seaward de creasing sedimentary rate. These two fcatures, together with higher sedimentary rate in the Late Pleistocene (28. 9cm/ka ) than that in the Holocene (9. 3cm/ka ) indicates a shallow-deepnlarginal sea enviTonment in the northern and middle South China Sea. |
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| Keywords: | Sedimentary rate changing mechanism Late Pleistocene South China Sea |
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