Collaborative Research: Experimental Determination of Trace Element Distributions between Melts and Mantle Phases at P, T and X Relevant to MORB Genesis

合作研究：实验测定与 MORB 成因相关的 P、T 和 X 熔体和地幔相之间的微量元素分布

• 批准号: 9633778
• 负责人: John Longhi
• 金额: $ 23万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-12-01 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633778&HistoricalAwards=false
• 关键词: Collaborative; Research; Experimental; Determination; Trace

9633778 Longhi Title: Collaborative research: experimental determination of trace element distributions between melts and mantle phases at P,T, and X relevant to MORB genesis. The generation of basalts at mid-ocean ridges starts deep in the mantle and progresses as the mantle convects upward. The composition of the basalts depends on the composition of the mantle, the minerals present, the temperatures and pressures of melting, and the speed of melting and movement the melt through the mantle. trace elements in the basalts can be used to explain much about the melting, but the explanations require that we know the ratio of the trace element in mantle minerals to the amount in the melted mantle. These ratios (distributions) are determined in laboratory experiments on mantle minerals at high temperature and pressure. This project is to extend the range of pressures at which we know the distributions of several elements.

9633778 Longhi 标题：合作研究：实验测定与 MORB 成因相关的 P、T 和 X 熔体和地幔相之间的微量元素分布。 大洋中脊玄武岩的生成始于地幔深处，并随着地幔向上对流而进展。玄武岩的成分取决于地幔的成分、存在的矿物、熔化的温度和压力、以及熔化和熔体穿过地幔的运动的速度。玄武岩中的微量元素可以用来解释很多关于熔化的事情，但是解释需要我们知道地幔矿物中的微量元素与熔化的地幔中的量的比率。 这些比率（分布）是在高温高压下对地幔矿物进行的实验室实验中确定的。该项目旨在扩大我们了解多种元素分布的压力范围。