Sampling Basalts in the Quebrada-Discovery-Gofar Transform Fault System: Testing Models of Mantle Flow and Melt Transport

克布拉达-发现-戈法尔转换断层系统中的玄武岩取样：地幔流和熔体输运模型的测试

• 批准号: 0527152
• 负责人: Donald Forsyth
• 金额: $ 57.06万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0527152&HistoricalAwards=false
• 关键词: Sampling; Basalts; Quebrada; Discovery; Gofar

0527152ForsythAbstractThe PIs will study and quantify mantle flow, melt production, melt path and mantle heterogeneity beneath the fast spreading EPR at the Quebrada/Discovery/Gofar fracture zone system. They will accomplish this by mapping, sampling intra-transform spreading centers and adjacent mid-ocean ridge spreading centers and post cruise analysis of the basalts for major and trace element, and Sr, Nd, Pb and Th isotopic composition.. The geochemical results will be compared to melting model predictions and the observed geophysics of the region. The study will provide a complete geochemical data set within a coherent geophysical/geodynamics framework that will allow addressing several fundamental questions of mantle and melt dynamics beneath mid-ocean ridges.The award will fund the work of a young investigator and two graduate students. A planned undergraduate student program at sea is another innovative broader educational impact.

0527152Forsythabstractthepththe PIS将在Quebrada/Discovery/Gofar裂缝区系统的快速扩散EPR下研究和量化地幔流，熔体产生，熔体路径和地幔异质性。他们将通过映射，采样转化内传播中心和相邻的中山脊扩散中心以及对主要和痕量元素的玄武岩分析以及SR，ND，PB和同位素组成的邮轮分析来实现这一目标。这项研究将在连贯的地球物理/地球动能学框架内提供完整的地球化学数据集，该框架将允许在中端脊下解决地幔和融化动态的几个基本问​​题。该奖项将资助年轻的研究者和两名研究生的工作。一项计划在海上的本科生计划是另一个创新的广泛教育影响。