Comparative Petrology of Propagating and Failing Rifts of the Galapagos Spreading Center at 95.5'W

这项研究将继续调查1985年阿尔文/亚特兰蒂斯二号巡航期间在加拉帕戈斯西经95.5度传播的裂谷地区收集的地质观测和样品。工作将集中在获得一个扩展的矿物成分数据库、选定的玻璃分离微量元素成分和熔体包裹体主要元素。这些结果将回答一些关于裂谷区岩浆生成和开采过程的基本问题，裂谷区已经显示出有趣的岩石学多样性。这项研究还将有助于理解岩石圈板块内裂隙的破坏和传播的构造。该项目将在87财年获得6.5万美元的支持，为期18个月。

This research is to continue investigation of geological observation and samples collected during the 1985 Alvin/Atlantis II cruise in the Galapagos Propagating Rift area 95.5 degrees W. The work will be concentrated on obtaining an expanded data base of mineral compositions, selected glass separate trace element compositions, and melt inclusion major elements. The results will answer some of the fundamental questions about the magma generation and mining processes in a propagating rift area which has shown interesting petrological diversity. This study will also contribute to the understanding of the tectonics of failure and propagation of rifts within a lithospheric plate. The project will be supported at $65,000 in FY87 for 18 months.