Detailed Petrologic Studies of the Galapagos 95.5'W Propagating Rift System

加拉帕戈斯 95.5W 传播裂谷系统的详细岩石学研究

• 批准号: 8700927
• 负责人: David Christie
• 金额: --
• 依托单位: Columbia University Lamont Doherty Earth Observatory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-04-15 至 1989-02-14
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700927&HistoricalAwards=false
• 关键词: Detailed; Petrologic; Studies; Galapagos; 95.5

The purpose of this award is to carry out a detailed petrologic study of the rocks collected by dredging and by DSRV ALVIN from the Galapagos 95.5 degrees W. propagating rift areas, which include the normal rift, the failed rift, and the transition area. The investigator will also perform 1-atmosphere experiments to determine the dependence of the petrologic phase boundaries of the mid-ocean ridge basalt to the composition of the basalts. All the petrologic data will be combined with the ongoing tectonic and geophysical interpretations of the acquired data to produce an integrated petrologic and tectonic model of rift propagation. The study will contribute to the understanding of rift failure and rift propagation in a lithospheric plate, generation and evolution of magma in a propagating rift area, and the crustal evolution of the East Pacific Ridge area. The project will be supported at $65,000 for 18 months in FY87.

该奖项的目的是对通过疏浚和DSRV Alvin从西经95.5度的加拉帕戈斯收集的岩石进行详细的岩石学研究。研究人员还将进行1大气层实验，以确定大洋中脊玄武岩的岩石学相界与玄武岩成分的相关性。所有的岩石学数据将与正在进行的对所获得的数据的构造和地球物理解释相结合，以产生一个完整的裂谷扩展的岩石学和构造模型。这一研究将有助于理解岩石圈板块中的裂谷破坏和裂谷扩展、裂谷区岩浆的生成和演化以及东太平洋海脊地区的地壳演化。该项目将在87财年获得为期18个月的65,000美元的支持。