生物硅对南海南部表层沉积物粒度分析结果的影响

发布时间：2018-06-23 06:09

  本文选题：生物硅 + 粒度　； 参考：《海洋地质与第四纪地质》2016年03期

【摘要】：通过采用两种不同的粒度预处理方案,对南海南部表层沉积物进行了粒度分析,探讨了生物硅对南海南部表层沉积物粒度结果的影响。结果表明,生物硅无论是对粒度组分、粒度参数,还是对沉积物类型都有显著的影响。同时,结合显微镜镜下涂片鉴定的硅质生物碎屑含量,认为要获取有效的南沙陆坡区的陆源沉积物的粒度分布特征需去除掉生物硅。通过对比发现南海南部表层沉积物生物硅的主要粒级分布范围为8~90μm。
[Abstract]:The particle size of surface sediments in the south of the South China Sea was analyzed by using two different particle size pretreatment schemes, and the effect of biological silicon on the grain size of surface sediments in the south of the South China Sea was discussed. The results show that biogenic silicon has a significant effect on particle size composition, particle size parameters and sediment types. At the same time, in combination with the siliceous bioclastic content identified by microscopical smear, it is considered that the removal of biological silicon is necessary to obtain the grain size distribution characteristics of land-based sediments in the Nansha continental slope area. It is found that the main particle size distribution range of biogenic silicon in the surface sediments of the southern South China Sea is 890 渭 m.
【作者单位】： 中国科学院海洋研究所中国科学院海洋地质与环境重点实验室;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;
【基金】：全球变化及海气相互作用项目(GASI-04-01-02) 中国科学院战略性先导科技专项(A类)项目(XDA11030103) 国家自然科学基金项目(41576034) 大陆架科学钻探项目(GZH201100202)
【分类号】：P736.21
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本文编号：2056143