Abstract

The paper presents the mineral and chemical compositions of carbonate, metalliferous, and ore-bearing sediments developed within the Pobeda ore cluster based on the materials of stations 37L244g, 37L245g, and 37L184k by the chemical, optical, electron microscopic, electron probe, and X-ray methods. The compositions are compared with those of background biogenic carbonate sediments developed beyond the hydrothermal cluster. The results revealed that the hydrothermal activity zone is marked by various types of mineral and geochemical zoning: (1) increase in the ore element concentration downward the sediment section leading to a downsection change of carbonate sediments by the ore-bearing variety (St. 37L184k); (2) layer-by-layer enrichment of sediments with ore components (St. 37L244g); and (3) confinement of concentration zones to the roof, middle part, and bottom of sedimentary deposits (St. 37L245g). The relationship of various types of mineral and geochemical zoning with the physical and chemical parameters of interstitial waters in the metalliferous and ore-bearing sediments is considered.

中文翻译：

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波贝达热液团（17°07.45′N–17°08.7′N大西洋中脊）底部沉积物的矿物组成和地球化学分区

摘要

论文根据化学，光学，电子显微镜，电子探针和X站37L244g，37L245g和37L184k站的材料，介绍了Pobeda矿团内发育的碳酸盐，含金属和含矿沉积物的矿物和化学成分。 -射线方法。将该成分与在热液团以外发育的背景生物碳酸盐沉积物进行了比较。结果表明，热液活动带具有多种类型的矿物和地球化学区划特征：（1）含矿物质种类使碳酸盐沉积物的下沉变化（St.37L184k）增加了沉积物下部的矿质元素浓度，导致碳酸盐岩沉积物的下沉变化。 ）; （2）逐层富集含矿石成分的沉积物（St. 37L244g）；（3）将集中区限制在屋顶上；沉积物的中部和底部（St. 37L245g）。研究了含金属和含矿沉积物中间隙水的各种矿物和地球化学分区与间隙水的物理和化学参数之间的关系。