Evolution of the Galapagos Hotspot - Spreading Ridge System

这是一个项目，继续采样和地球化学 分析加拉帕戈斯火山熔岩对印度洋沿岸地区的影响 以确定加拉帕戈斯的性质 热点 取样、分析和年代测定， 重力数据的分析，将允许测试 大洋中脊玄武岩物质的热夹带 加拉帕戈斯火山柱的中心 %%% 在理解宇宙的过程中最有趣的问题之一 海底岩石的地球化学是 确定过程之间相互作用的性质， 形成了在正常海脊中发现的玄武岩 轴向环境和过程与深埋热 在地幔中发现羽状物。 岩石的初步研究 加拉帕戈斯地台表明， 平台看起来像正常洋中脊玄武岩，而 那些在平台边缘的人 类似于梅花状岩石。 这种岩石取样和 一个分析程序将有助于检验一个有趣的假设 由地球物理学家发展的关于羽流动力学的 会产生异常的地球化学特征 的 这个项目的人员是最合适的，因为博士。 克里斯蒂有丰富的海上经验，麦克伯尼博士 我在加拉帕戈斯群岛做了大量的工作，理查兹博士 提出了一个正在被验证的假设 邓肯博士 和白色提供必要的分析专业知识。

This is a project to continue the sampling and geochemical analysis of Galapagos lavas to the off-shore regions of the platform in order to define the nature of the Galapagos hotspot. Sampling, analysis and dating, combined with the analysis of gravity data, will permit the testing of the thermal entrainment of Mid-ocean Ridge basalt material into the center of the Galapagos plume. %%% One of the most interesting problems in understanding the geochemistry of rocks emplaced on the sea floor is the determine the nature of the interaction between processes that generate basaltic rocks that are found in a normal ocean ridge axis environment and process associated with deep seated hot spot plumes in the mantle. Preliminary study of rocks from the Galapagos platform show that rocks from the interior of the platform look like normal mid ocean ridge basalts, whereas those on the margins of the platform have compositions resembling plumes-type rocks. This rock sampling and analytical program will help test an interesting hypothesis developed by geophysicists regarding the dynamics of plumes that can give rise to the unusual geochemical signature. The personnel for this project are most appropriate because Dr. Christie has considerable experience at sea, Dr. McBirney has done considerable work on the Galapagos Islands, Dr. Richards has developed the hypothesis that is being tested. Drs. Duncan and White provide the necessary analytical expertise.