Sulfides and Intermetallics in Mantle Peridotites from the Kamchatsky Mys (Eastern Kamchatka)

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Journal of Volcanology and Seismology Pub Date : 2026-10-02 DOI:10.1134/S074204632660021X

D. P. Savelyev, S. V. Moskaleva

引用次数: 0

Abstract

Mantle peridotites, rocks from the lower part of the ophiolite complex, were studied on the Kamchatsky Mys Peninsula (eastern Kamchatka). Cu and Ni sulfides, native copper, awaruite, and microinclusions of (Cu?)Pd₅In₂ were described in fresh (non-serpentinized) harzburgites. The structure and composition of the studied rocks support a primary (mantle) origin for the sulfides. Native phases formed by the reduction of metals from sulfides during the percolation of free hydrogen through the rocks. Hydrogen was released during serpentinization of mantle peridotites in the underlying slabs. The presence of a sulfide phase in the Kamchatsky Mys mantle peridotites may be related to their origin in a mantle plume-influenced environment.

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堪察加半岛东部地幔橄榄岩中的硫化物和金属间化合物

对堪察加半岛东部蛇绿岩杂岩下部的地幔橄榄岩进行了研究。Cu和Ni硫化物、天然铜、白钨和（Cu?）Pd5In2在新鲜的（未蛇纹石化的）哈茨堡土中被描述。所研究岩石的结构和组成支持硫化物的原生（地幔）起源。游离氢在岩石中渗透时由硫化物中金属的还原而形成的天然相。氢在下伏板块的地幔橄榄岩蛇纹石化过程中释放。堪察加地幔橄榄岩中硫化物相的存在可能与地幔柱影响环境有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Volcanology and Seismology 地学-地球化学与地球物理

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Volcanology and Seismology publishes theoretical and experimental studies, communications, and reports on volcanic, seismic, geodynamic, and magmatic processes occurring in the areas of island arcs and other active regions of the Earth. In particular, the journal looks at present-day land and submarine volcanic activity; Neogene–Quaternary volcanism; mechanisms of plutonic activity; the geochemistry of volcanic and postvolcanic processes; geothermal systems in volcanic regions; and seismological monitoring. In addition, the journal surveys earthquakes, volcanic eruptions, and techniques for predicting them.