| 南沙海槽区表层沉积物的地球化学特征 |
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| 引用本文： | 古森昌,陈忠,颜文,刘芳文.南沙海槽区表层沉积物的地球化学特征[J].海洋地质与第四纪地质,2001,21(2):43-47. |
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| 作者姓名： | 古森昌 陈忠 颜文 刘芳文 |
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| 作者单位： | 中国科学院南海海洋研究所边缘海开放室, |
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| 基金项目： | 国家自然科学基金!资助项目 ( 4 0 0 760 18)，国家重点基础研究发展规划“973”项目! ( G2 0 0 0 0 785 0 0 )，中科院南海海洋研 |
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| 摘 要： | 对南沙海槽区73个表层沉积物的地球化学及沉积环境特征进行了研究。微量元素主要有Cu、Pb、Zn、Ni、Co、Cr、Sr、Ba和Zr，表现为亲陆性，常量组分为SiO2、AI2O3、TFe、CaO、MgO、K2O、Na2O、MnO、PO25、TiO2，表现为边缘海向深海过渡的沉积环境特点。沉积物质含有粘土组分、碳酸盐型生物碎屑组分、陆源碎屑非粘土组分以及火山碎屑、岛源物质，沉积环境与水深关系密切，在200m以浅，沉积物的供给复杂，沉积环境多变，在200m以深，沉积物的供给和沉积环境稳定。
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| 关 键 词： | 微量元素 常量组分 因子分析 表层沉积物 南沙海槽区 地球化学特征 沉积环境 |
| 文章编号： | 0256-1492(2001)02-0043-05 |
| 修稿时间： | 2000年12月5日 |
GEOCHEMICAL CHARACTERISTICS AND SEDIMENTARY ENVIRONMENT OF SURFACE SEDIMENTS OF SOUTH NANSHA TROUGH AND ADJACENT SEA AREAS |
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| GU Sen chang,CHEN Zhong,YAN Wen,LIU Fang wen.GEOCHEMICAL CHARACTERISTICS AND SEDIMENTARY ENVIRONMENT OF SURFACE SEDIMENTS OF SOUTH NANSHA TROUGH AND ADJACENT SEA AREAS[J].Marine Geology & Quaternary Geology,2001,21(2):43-47. |
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| Authors: | GU Sen chang CHEN Zhong YAN Wen LIU Fang wen |
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| Abstract: | This paper aims at studying on geochemical characteristics and sedimentary environment of surface sediments of the Nansha Trough and adjacent sea areas. Trace elements such as Cu, Pb, Zn, Ni, Co, Cr, Sr, Ba and Zr exhibit a terrestrial nature, and the major elements like SiO 2, Al 2O 3, TFe, Cao, MgO, K 2O, Na 2O, MnO, P 2O 5 and TiO 2, have sediment characteristics from marginal sea to deep sea. The results of factor analysis show that the surface sediments are basically made up of terrestrial, biological, volcanic and island materials. There is an affinity between sediment environment and water depth. Above 200 m, sediment comes from complicated sources and sediment environment is also various, but blow 200 m, sediment sources and environments are stable. |
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| Keywords: | trace elements major elements factor analysis typical component South Nansha Trough and adjacent sea areas |
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