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海洋科学  2011 

琼东沿岸泥质沉积常量元素地球化学特征

, PP. 42-46

Keywords: 南海,陆架,泥质沉积,地球化学特征,粒度,S20,

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Abstract:

对南海北部陆架琼东沿岸泥质区S20孔进行了岩性、粒度和常量元素分析,初步探讨了该泥质区常量元素地球化学特征。S20孔岩性较均一,主要为黏土质粉砂,研究区受相对单一而稳定的水动力条件控制。常量元素含量变化符合“元素的粒度控制律”,R型因子分析结果表明,第一因子P2O5,MnO,TiO2,Al2O3,Fe2O3和K2O等的组合,体现了元素在表生环境中活动性差异与迁移状况,F2因子MgO和Na2O组合的意义在现有研究基础上我们尚无很好的解释,亟待矿物学方面的研究支持。均匀的岩性组成、相对稳定的元素组成表明该区沉积物适宜于古环境重建等研究。

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