Experimental Petrology of Tertiary North Atlantic Magmas

9419382莱舍该计划的目标是对北大西洋岩浆的多压力分异历史提供实验约束，并评估格陵兰-欧洲大陆由羽流引发的裂谷的地球动力学模型。将进行两项实验研究。首先，利用钻石集料技术对石榴石二辉橄榄岩的熔融体系进行了研究，确定了石榴石二辉橄榄岩低度熔体组分的组成。其次，高场强、稀土和过渡族元素在玄武岩液体、单斜辉石和石榴石之间的分配将被测量到4.5 Gpa。这项研究获得的数据有望在火成岩岩石学、地球化学以及陆地和海洋地质领域得到更广泛的应用。

9419382 Lesher The program has as its goal to provide experimental constraints on the polybaric differentiation histories of North Atlantic magmas, and to evaluate geodynamic models of plume-initiated rifting of the Greenland-European continent. Two experimental studies will be conducted. First, the melting systematics of garnet lherzolite will be characterized at conditions inderred for the early Tertiary "Iceland" plume using the diamond aggregate technique to determine the compositions of low degree melt fractions for garnet lherzolite. Second, the partitioning of high field strength, rare earth, and transition group elements between basaltic liquids, clinopyroxene, and garnet will be measured up to 4.5 Gpa. The data obtained in this study are expected to have wider applications in the field of igneous petrology, geochemistry, and terrestrial and marine geology.