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对东太平洋海隆(EPR)13°N西侧2个沉积物岩心进行了碳酸盐、常量和微量元素测定。沉积物中Fe和Mn的含量较高,其中,E271站位沉积物岩心中Fe含量8.5%~13.8%,Mn含量1.7%~3.17%;E272站Fe含量6%~13%,Mn含量0.12%~3.31%,显示在EPR 13°N热液活动区西侧25~45 km处热液柱对沉积作用的影响明显。E271和E272站位CaCO3含量分别为5.9%~27.57%和6.67%~38.20%。热液柱的沉积作用,使Cu、Pb和Zn在沉积物中富集,Cu/Fe、Pb/Fe和Zn/Fe比值低于热液喷口处的颗粒物中值,Pb表现出在海水中运移距离较短或者只有少量Pb随热液柱扩散运移。热液柱在E271和E272站位的沉积作用使得Li、Mo和Ni在沉积物中富集,此外,V因为铁氧化物颗粒吸从海水中吸附并沉降到沉积物中。沉积物中Ti和Al有非常好的相关性,其Ti/Al比值为0.05左右,与太平洋深海沉积相比具有更高的铁含量,而U在岩心中的含量与深海沉积相似。
Carbonate, macadam and trace element determinations were performed on two sedimentary cores west of 13 ° N of the East Pacific Rise Sea (EPR). The content of Fe and Mn in the sediments is high, of which, the content of Fe in cores of sediments in station E271 is 8.5% ~ 13.8% and the content of Mn is 1.7% ~ 3.17%; the content of Fe in Fe272 is 6% ~ 13% and the content of Mn is 0.12% ~ 3.31%, indicating that the hydrothermal column at 25 ~ 45 km west of the EPR 13 ° N hydrothermal zone has a significant effect on sedimentation. The contents of CaCO3 in stations E271 and E272 were 5.9% -27.57% and 6.67% -38.20% respectively. Sedimentation of hydrothermal column made Cu, Pb and Zn accumulate in the sediments. The ratio of Cu / Fe, Pb / Fe and Zn / Fe was lower than that of hydrothermal vents. Shorter distance migration or only a small amount of Pb with hydrothermal column diffusion migration. Sedimentation of hydrothermal column at stations E271 and E272 resulted in enrichment of Li, Mo and Ni in the sediments. In addition, V was adsorbed by seawater and precipitated into sediment due to iron oxide particles. There is a very good correlation between Ti and Al in the sediments. The Ti / Al ratio is about 0.05, which is higher than that in the Pacific Ocean. However, the content of U in the core is similar to that in the deep sea.