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

该奖项的目的是对通过疏浚和DSRV ALVIN从加拉帕戈斯群岛西经95.5度扩展裂谷区收集的岩石进行详细的岩石学研究，其中包括正常裂谷，失效裂谷和过渡区。研究人员还将进行1大气压实验，以确定洋中脊玄武岩的岩石学相边界与玄武岩组成的相关性。所有的岩石学数据将与正在进行的构造和地球物理解释相结合，以产生一个完整的岩石学和构造模型。该研究将有助于认识岩石圈板块的裂谷破坏和裂谷扩展，裂谷扩展区岩浆的产生和演化，以及东太平洋洋脊地区的地壳演化。该项目将在87财年获得为期18个月的65,000美元资助。

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.