Collaborative Research: Petrologic and Geochemical Studies of a Layered Mantle Peridotite, Horoman, Japan: Implicationsfor Melt Segregation and Migration in Arc-Related Upper...

合作研究：日本 Horoman 层状地幔橄榄岩的岩石学和地球化学研究：对与弧相关的上部熔体分离和迁移的影响...

• 批准号: 9116911
• 负责人: Frederick Frey
• 金额: $ 20.58万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-01 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9116911&HistoricalAwards=false
• 关键词: Collaborative; Research; Petrologic; Geochemical; Studies

This proposal for the third and fourth year of an intended six-year project, will determine the trace element and isotopic systematics (Sr, Nd, Pb) of minerals and whole-rocks from contiguous layers in the Horman Peridotite. These data are being integrated with new and previous whole-rock and mineral major element analyses. Interpretations of the comprehensive data generated in this collaborative U.S.-Japan effort will enable the PIs to understand the processes that created compositional variations and layering within the Horoman Peridotite. As a result, they expect to significantly improve the understanding of melt formation, migration and segregation in the upper mantle. In addition, this peridotite is in an arc tectonic setting, and it may be an example of how oceanic asthenosphere is modified by subduction processes. Therefore, the results of this research may contribute to an understanding of the arc volcanism that results from plate convergence.

这一拟议的六年期方案的第三和第四年 项目，将确定微量元素和同位素系统学 (Sr Nd，Pb）的矿物和全岩从相邻层， 霍曼橄榄岩 这些数据正在与新的 和以往的全岩和矿物常量元素分析。 对本报告中生成的综合数据的解释 合作的美国-日本的努力将使PI了解 创造成分变化和分层的过程 在霍罗曼橄榄岩中 因此，他们希望 显著提高了对熔体形成的理解， 上地幔的迁移和分离。 另外这款 橄榄岩处于弧形构造环境，这可能是一个例子 大洋软流圈是如何被俯冲过程改变的 因此，这项研究的结果可能有助于 对板块运动导致的弧火山作用的理解 收敛