Geochemical and Structural Evolution of Gabbro-Hosted Magma-Hydrothermal Systems: East Greenland

PI继续研究格陵兰和欧亚大陆之间的地壳裂谷和北大西洋盆地形成过程中辉长岩所承载的岩浆-热液系统的地球化学和构造演化。将讨论四个具体问题：(1)脉系与辉长岩体的岩浆和构造变形之间的关系；(2)与热液蚀变有关的质量传递的控制因素；(3)矿物学与同位素蚀变之间的关系；(4)热液的来源以及海水何时成为这些流体的重要组成部分。将使用多种野外、岩石学、矿物学和理论方法来回答这些问题。

The PI continued study of the geochemical and structural evolution of gabbro-hosted magma-hydrothermal systems during crustal rifting between Greenland and Eurasia and formation of the N. Atlantic ocean basin. Four specific topics will be addressed: (1) relations between vein systems and magmatic and structural deformation of gabbro bodies, (2) what controls mass transfer associated with hydrothermal alteration, (3) what is relation between mineralogic and isotopic alteration, and (4) what are sources of hydrothermal solutions and when did sea water become an important component of these fluids. A variety of field, petrologic, mineralogic, and theoretical methods will be used to answer these questions.