孙晓燕, 李希彬. 近3 ka来东海陆架北部泥质沉积物地球化学特征[J]. 海洋地质前沿, 2012, 28(4): 10-16.
    引用本文: 孙晓燕, 李希彬. 近3 ka来东海陆架北部泥质沉积物地球化学特征[J]. 海洋地质前沿, 2012, 28(4): 10-16.
    SUN Xiaoyan, LI Xibin. GEOCHEMICAL CHARACTERISTICS OF RECENT 3 ka MUD FROM THE NORTHERN PART OF EAST CHINA SEA[J]. Marine Geology Frontiers, 2012, 28(4): 10-16.
    Citation: SUN Xiaoyan, LI Xibin. GEOCHEMICAL CHARACTERISTICS OF RECENT 3 ka MUD FROM THE NORTHERN PART OF EAST CHINA SEA[J]. Marine Geology Frontiers, 2012, 28(4): 10-16.

    近3 ka来东海陆架北部泥质沉积物地球化学特征

    GEOCHEMICAL CHARACTERISTICS OF RECENT 3 ka MUD FROM THE NORTHERN PART OF EAST CHINA SEA

    • 摘要: 对东海陆架北部泥质区的FJ04孔进行了元素含量分析、粒度分析以及AMS14C测年,讨论了元素含量与沉积物粒度的关系,采用R型因子分析讨论了元素间的组合关系。研究表明,近3 ka来FJ04孔元素含量稳定,大部分元素含量随沉积物粒径变细呈增加趋势,Ca和Sr的含量呈减少趋势,Ba、Th和P与沉积物粒径的相关性很差。因子分析结果表明,FJ04孔元素含量变化是"元素粒度控制"、自生钙质组分加入、海水和孔隙水影响、源区风化程度以及沉积环境氧化还原状态等综合作用的体现。

       

      Abstract: Based on the data of AMS14C dating, grain-size analysis and XRF analysis of Core FJ04 from the northern part of the East China Sea, using R-factor analysis as a tool, this paper discussed the relation between grain-size and elements, and the relation among elements. The results show that contents of most elements increased with grain-size decrease, except Ca and Sr, even the change is little during the last 3 ka. However, poor correlation exists between grain-size and contents of Ba, Th and P. Factor analysis demonstrates that the contents of elements depend upon grain-size, input of biogenetic calcium carbonate, influence of sea water and pore water, the weathering intensity of parent rocks and the redox process in the depositional environment.

       

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