Abstract

A geochemical review of Pleistocene sediments in the Indian Ocean has been accomplished based on the deep-sea drilling cruise reports and other literature references. We compiled the database including more than 2000 chemical analyses of sediment samples and tables showing the mean arithmetic composition of lithogenic and biogenic sediments. All data were PAAS-normalized. The dominant role of terrigenous clastics is revealed in the formation of the chemical composition of noncarbonate sediments and noncarbonate matter in planktonic carbonates. The results made it possible to establish the main geochemical associations together with three main (terrigenous, carbonate, and hydrogenous) factors determinating the sediment composition. We calculated the weighted mean chemical composition, as well as the element accumulation rate in the sediments and their mass accumulation rates. All these parameters of the chemical composition can be used for the comparative analysis, with analogous parameters in other ocean sediments within Pleistocene straton in the World Ocean.

中文翻译：

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印度洋更新世沉积物的化学成分

摘要

根据深海钻探巡航报告和其他文献参考资料，完成了印度洋更新世沉积物的地球化学综述。我们编制的数据库包括 2000 多个沉积物样品的化学分析以及显示岩性和生物沉积物平均算术成分的表格。所有数据均经过 PAAS 标准化。陆源碎屑的主导作用体现在浮游碳酸盐中非碳酸盐沉积物和非碳酸盐物质的化学成分的形成中。这些结果使得建立主要地球化学关联以及决定沉积物成分的三个主要因素（陆源、碳酸盐和含氢）成为可能。我们计算了加权平均化学成分，以及沉积物中的元素积累速率及其质量积累速率。所有这些化学成分参数都可以与世界海洋更新世地层内其他海洋沉积物的类似参数进行比较分析。