Trace element characteristics of pore water from the deep-sea sediments of the Interoceanmetal exploration area in the Clarion-Clipperton Fracture Zone, NE Pacific

Z. Milakovska, A. Hikov, V. Stoyanova, I. Peytcheva, Tomasz Abramowski
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Abstract

The concentrations of Fe, Mn, Co, Cd, Zn, Cu, Mo, and As were registered in broad intervals and are elevated compared to the mean values for the ocean water. Vertical distributions of the element concentrations in the pore waters along four sediment cores show distinct differences, mainly for the elements Fe, Mn, Cu, and Zn. Bioturbation activities developed in the depth interval 7–15 cm could be a probable reason for the variation trends. The distributions for the elements As, Cd, Co and Zn are conservative type and the patterns for the Mo and Ni – scavenged type. The obtained pore water profiles are similar to the distribution trends for areas in the Eastern Equatorial Pacific and show different patterns from the pore waters from the Western Pacific.
东北太平洋克拉里昂-克利珀顿断裂带国际海洋金属勘探区深海沉积物孔隙水的微量元素特征
铁、锰、钴、镉、锌、铜、钼和砷的浓度分布范围很广,与海水的平均值相比偏高。沿四个沉积物岩心的孔隙水元素浓度垂直分布显示出明显差异,主要是铁、锰、铜和锌元素。7-15 厘米深度范围内的生物扰动活动可能是造成这种变化趋势的原因。砷、镉、钴和锌元素的分布属于保守型,而钼和镍的分布则属于清除型。所获得的孔隙水剖面与东赤道太平洋地区的分布趋势相似,与西太平洋孔隙水的分布模式不同。
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