Platinum Group Elements in Layered Intrusions and Submarine Glasses

层状侵入体和海底玻璃中的铂族元素

• 批准号: 8720982
• 负责人: Edmond Mathez
• 金额: $ 5.19万
• 依托单位: American Museum Natural History
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-01 至 1990-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720982&HistoricalAwards=false
• 关键词: Platinum; Group; Elements; Layered; Intrusions

This proposal involves a three-part investigation of the behavior of platinum group elements (PGE's) in magmatic and hydrothermal environments: (1) the distribution of selected elements will be measured between sulfide globules and coexisting glass (=quenched liquid) in submarine basalts to evaluate mineral- melt partitioning effects; (2) Os isotopic data will be used to evaluate the extent of open-system behavior following emplacement of two PGE-bearing ultramafic intrusions - this study will assess the importance of hydrothermal processes in redistributing PGE's; (3) Detailed petrographic and mineralogic studies will be carried out on one PGE-bearing body to determine why PGE mineralogy varies systematically within this body.

本文拟对岩浆和热液环境中铂族元素（PGE）的行为进行三部分研究：(1)在海底玄武岩中硫化物球和共存玻璃（=淬火液）之间测量选定元素的分布，以评估矿物-熔体分配效应；(2)利用Os同位素数据评价两个含PGE超基性侵入体就位后的开放体系行为程度，评价热液作用对PGE重新分布的重要性；(3)将对一个含PGE体进行详细的岩石学和矿物学研究，以确定为什么PGE矿物学在该体内系统地变化。