Petrology of plutonic xenoliths and volcanic rocks from Grenada, lesser antilles
Petrology of plutonic xenoliths and volcanic rocks from Grenada, lesser antilles
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DOI：
10.1093/petrology/egu027
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发表时间：
2014-07
影响因子：
3.9
通讯作者：
C. C. Stamper-C.;J. Blundy;R. Arculus;E. Melekhova
中科院分区：
文献类型：
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作者：
C. C. Stamper-C.;J. Blundy;R. Arculus;E. Melekhova
各自的组合和矿物化学表现出小规模的熔体组成和岩浆储存条件之间的这两个岛屿的变化的影响。我们认为，不寻常的岩石学和地球化学特征的格林纳达岩浆接近南美大陆和相关的海洋岩石圈局部增厚的结果。这增加了岩浆生成的深度，并反映在格林纳达熔岩的LREE/ HREE升高，表明与石榴石二辉橄榄岩源的最后平衡发生在-60公里的深度。
respective assemblages and mineral chemistry demonstrating the effect of small-scale changes in melt composition and magma storage conditions between these two islands. We suggest that the unusual petrological and geochemical characteristics of Grenada magmas are a result of proximity to the South American continent and associated localized thickening of the oceanic lithosphere. This increases the depth of magma generation and is reflected in the elevated LREE/ HREE of the Grenada lavas, indicating that last equilibration with a garnet lherzolite source occurred at a depth of � 60 km.