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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Relationship between Kamen Volcano and the Klyuchevskaya group of volcanoes (Kamchatka)
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Relationship between Kamen Volcano and the Klyuchevskaya group of volcanoes (Kamchatka)

机译：假面火山与Klyuchevskaya火山群（堪察加半岛）之间的关系

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摘要

Data on the geology, petrography, mineralogy, and geochemistry or rocks from Kamen Volcano (Central Kamchatka Depression) are presented and compared with rocks from the neighbouring active volcanoes. The rocks from Kamen and Ploskie Sopky volcanoes differ systematically in major elemental and mineral compositions and could not have been produced from the same primary melts. The compositional trends of Kamen stratovolcano lavas and dikes are clearly distinct from those of Klyuchevskoy lavas in all major and trace element diagrams as well as in mineral composition. However, lavas of the monogenetic cones on the southwestern slope of Kamen Volcano are similar to the moderately high-Mg basalts from Klyuchevskoy and may have been derived from the same primary melts. This means that the monogenetic cones of Kamen Volcano represent the feeding magma for Klyuchevskoy Volcano. Rocks from Kamen stratovolcano and Bezymianny form a common trend on all major element diagrams, indicating their genetic proximity. This suggests that Bezymianny Volcano inherited the feeding magma system of extinct Kamen Volcano. The observed geochemical diversity of rocks from the Klyuchevskaya group of volcanoes can be explained as the result of both gradual depletion over time of the mantle N-MORB-type source due to the intense previous magmatic events in this area, and the addition of distinct fluids to this mantle source.
机译：呈现了有关Kamen火山（堪察加半岛中部凹陷）的地质，岩石学，矿物学和地球化学数据，并将其与邻近活火山的岩石进行了比较。来自假面火山和Ploskie Sopky火山的岩石在主要元素和矿物组成方面存在系统差异，不可能由相同的初次熔体产生。在所有主要和微量元素图以及矿物质组成中，假面平流层火山熔岩和堤坝的成分趋势明显不同于Klyuchevskoy熔岩。然而，Kamen火山西南斜坡上的单相锥熔岩与来自Klyuchevskoy的中等高镁玄武岩相似，可能来自相同的初熔体。这意味着假面火山的单相锥代表了克柳切夫斯科伊火山的火山岩浆。在所有主要元素图上，来自假面层火山和贝兹米尼的岩石形成共同趋势，表明它们的遗传接近性。这表明Bezymianny火山继承了已经消失的假面火山的岩浆系统。 Klyuchevskaya组火山岩的观测地球化学多样性可以解释为以下原因：由于该地区先前强烈的岩浆事件，地幔N-MORB型气源随时间逐渐消耗，并添加了独特的流体这个地幔源。

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