Deconvolving the Galapagos Plume

加拉帕戈斯羽流的去卷积

• 批准号: 0335310
• 负责人: Alberto Saal
• 金额: $ 12.46万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0335310&HistoricalAwards=false
• 关键词: Deconvolving; Galapagos; Plume

The PI will conduct a geochemical study of existing samples from the Galapagos Islands and dredged samples for the Galapagos archipelago in order to sort out the various mantle components that apparently contribute to mantle melts there. He will primarily analyze olivine and spinel-hosted melt inclusions, based on evidence that such inclusions generally contain more diverse melts and are less affected by mixing than bulk lavas. He will analyze major elements, trace elements, volatile abundances, Pb isotopes and Oxygen isotopes in order to determine the nature of various mantle endmembers, and to provide constraints on what these endmembers actually are (subducted sediment? recycled oceanic gabbro? Recycled altered basalt, etc..). The study will mostly be conducted using instruments at WHOI, DTM, and Caltech.

PI将对加拉帕戈斯群岛的现有样品进行地球化学研究，并为加拉帕戈斯群岛的疏ed样品进行挖出的样品，以便整理出显然有助于地幔融化的各种地幔组件。他将主要分析橄榄石和尖晶石托管的融合物，这是基于证据表明，这种夹杂物通常包含更多的熔体，而不是混合熔岩的影响。他将分析主要元素，痕量元素，挥发性丰度，PB同位素和氧同位素，以确定各种地幔末端成员的性质，并就这些末端成员的实际情况提供约束（俯冲沉积物是什么（可回收的海洋gabbro？recycly gabbro？再生式的替代替代的底层）。该研究主要是使用WHOI，DTM和CALTECH的仪器进行的。