Change of the Composition of Solution During Its Migration Through the Sedimentary Cover in the Modern Hydrothermal System Center (Juan de Fuca Ridge, Pacific Ocean, ODP Hole 858B)

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Lithology and Mineral Resources Pub Date : 2024-04-02 DOI:10.1134/S0024490223700475

V. B. Kurnosov, Y. I. Konovalov, O. I. Okina, K. R. Galin

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Abstract

The article presents the results of studying alteration of the hydrothermal solution composition during its percolation in the Pleistocene sediments drilled by ODP Hole 858B (38.6 m deep) in the northern segment of Middle Valley, Juan de Fuca Ridge (Dead Dog hydrothermal field), 20 m away from the hydrothermal source with a temperature 276°C. Influence of sediments in Units I, IIB, and IID from this hole on the solution composition variation during the solution–sediment interaction has been established. The greatest influence on the solution composition occurred during its interaction with sediments of Units IIB and IID under high-temperature conditions (200–350°C) expressed in enrichment of the solution with a large amount of chemical elements. A possible alteration in the solution composition is shown in the process of solution–sediment interaction during its percolation in the sedimentary cover 250–300 m thick.

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现代热液系统中心（太平洋胡安-德富卡海脊，ODP 858B 号钻孔）溶液在沉积覆盖层中迁移过程中的成分变化

摘要-- 文章介绍了在胡安-德富卡海脊中谷北段（Dead Dog热液场）距热液源20米、温度为276℃的ODP第858B孔（38.6米深）钻探的更新世沉积物中热液溶液成分渗滤过程中的变化研究结果。已确定该孔 I、IIB 和 IID 单元的沉积物在溶液与沉积物相互作用过程中对溶液成分变化的影响。在高温条件下（200-350°C），溶液与 IIB 和 IID 单元沉积物相互作用时，溶液成分受到的影响最大，表现为溶液中富含大量化学元素。溶液在厚度为 250-300 米的沉积覆盖层中渗流时，溶液与沉积物的相互作用过程显示了溶液成分可能发生的变化。

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来源期刊

Lithology and Mineral Resources 地学-地球化学与地球物理

CiteScore

1.30

自引率

37.50%

发文量

审稿时长

>12 weeks

期刊介绍： Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.