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

该项目继续研究了格陵兰-欧亚大陆地壳裂陷和北大西洋盆地形成期间辉长岩岩浆-热液系统的地球化学和构造演化。本文将讨论以下四个主题：(1)脉系统与辉长岩岩浆岩和构造变形之间的关系；(2)热液蚀变的传质控制因素；(3)矿物学和同位素蚀变之间的关系；(4)热液溶液的来源以及海水何时成为这些流体的重要组成部分。各种野外、岩石学、矿物学和理论方法将被用来回答这些问题。

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.