RUI: A Petrologic Investigation into Mantle Xenoliths from Oahu: Origin and Significance of Glass-rich Pockets

尖晶石二辉橄榄岩组成矿物的地球化学特征表明，在库劳(拉斑玄武岩)和檀香山(碱性)岩浆活动过程中，亏损MORB的岩石圈经历了大量的不相容的次要和微量元素的富集。对浓缩过程的调查导致制定了本为期一年的提案，旨在探索孤立的载晶玻璃口袋的性质、化学成分和来源，其中一些可能具有活动能力，为这些捕虏体的浓缩提供了元素。在这个项目中，将对这些袋子中的相进行广泛的电子探针分析(主要和次要元素)和初步的离子微探针分析(REES)。这一结果将允许评估与所发现的各种类型的玻璃的来源有关的各种模型。

The geochemistry of the constituent minerals of spinel lherzolites suggests that the MORB-depleted lithosphere underwent significant enrichment in incompatible minor and trace elements during Koolau (tholeiitic) and Honolulu (alkalic) magmatic activity. An investigation into the enrichment processes has led to the development of the present 1 year proposal designed to explore the nature, chemical composition, and origin of isolated crystal-laden glass pockets, some of which may have activity provided the elements in which these xenoliths have been enriched. Extensive electron microprobe analysis (major and minor elements) and preliminary ion microprobe analysis (REES) of the phases in these pockets will be performed in this project. The results will allow evaluation of the various models concerned with origins of the various types of glasses found.