Collaborative Research: Integrated Petrological, Geophysical, and Numerical Modeling Constraints on Crustal and Mantle Processes along the Galapagos Spreading Center

合作研究：加拉帕戈斯扩张中心沿地壳和地幔过程的综合岩石学、地球物理和数值模拟约束

• 批准号: 0327051
• 负责人: John Sinton
• 金额: --
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0327051&HistoricalAwards=false
• 关键词: Collaborative; Research; Integrated; Petrological; Geophysical

This is a continuation of an integrated, multi-disciplinary project combining seismic, petrologic, geochemical, and numerical modeling. The project focuses on the Galapagos spreading center between 91 and 98 degrees west. The initial work provided the first complete multibeam bathymetry of the axial region, quantified variations in crustal thickness, determined the distribution of seismic reflectors from the top of crustal magma reservoirs, defined along-axis variations in geochemistry, and modeled these variations in terms of mantle source enrichment and extent of partial melting. The objectives of the continuation are to refine models of the relationship between axial thermal structure and axial morphology, combine seismic and petrologic observations to constrain variations in magma reservoir properties, and integrate seismic constraints with new measurement of U-series disequilibria to constrain variations in mantle upwelling rate, temperature and source composition.

这是一个结合地震，岩石学，地球化学和数值建模的综合，多学科项目的延续。 该项目的重点是西部91至98度之间的加拉帕戈斯蔓延中心。 最初的工作提供了轴向区域的第一个完整的多微光测深，量化了地壳厚度的量化变化，确定了地震反射器与地壳岩浆储层顶部的分布，在地球化学中定义了轴心变化，并以浓度富集和部分的范围对这些变化进行了建模。 延续的目的是完善轴向热结构与轴向形态之间关系的模型，结合地震和岩石学观察，以限制Magma储层特性的变化，并将地震约束与U-Series的新测量与U系列的新测量相结合，使U系列不平衡地限制了在Meantle uppelter compotition compotition comportions Compotition comportions compotition comportsions composition comportions compotitioncompos来。