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

RUI：对欧胡岛地幔包体的岩石学研究：富含玻璃的矿藏的起源和意义

• 批准号: 9104828
• 负责人: Andrew Macfarlane
• 金额: --
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9104828&HistoricalAwards=false
• 关键词: RUI; Petrologic; Investigation; into; Mantle

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.

尖晶石辉橄榄岩组成矿物的地球化学特征表明，贫morb岩石圈在Koolau（拉斑岩）和Honolulu（碱性）岩浆活动期间经历了不相容微量元素的富集。对富集过程的调查导致了目前为期1年的提案的发展，该提案旨在探索孤立的含晶体玻璃袋的性质、化学成分和起源，其中一些可能具有活性，提供了这些捕虏体富集的元素。广泛的电子探针分析（主要元素和次要元素）和初步的离子探针分析（REES）将在这个项目中进行。这些结果将允许对各种模型进行评估，这些模型与所发现的各种类型的眼镜的起源有关。