The Effect of Crystal Plastic Deformation of Quartz in Removing H2O From Fluid Inclusions Containing CO2+H2O

纯CO_2流体包裹体常出现在变质 已知的岩石在一种 富含H2O的液体。 密度与峰值变质相一致 条件，但其组成并不是。 该项目将 研究了参与结晶过程的可能性 可能导致石英的塑性流动和动态重结晶 包裹体中的H2O损失，而CO2保留在主体中 石英。 显示应变梯度的变质岩样品 手标本将被用来确定的变化， 流体包裹体的成分和密度 应变梯度和变形机制的变化。 结果有望澄清纯CO2包裹体的来源 为高温研究提供了新的视角 变形机制

Pure CO2 fluid inclusions commonly occur in metamorphic rocks which are known to have crystallized in the presence of an H20-rich fluid. Densities are consistent with peak metamorphic conditions, but their composition is not. This project will investigate the possibility that processes attending crystal plastic flow and dynamic recrystallization of quartz may result in loss of H2O from inclusions, with CO2 remaining in the host quartz. Samples of metamorphic rocks showing strain gradients in hand specimen will be utilized to determine the variations of composition and density of fluid inclusions in relation to gradients in strain and variations of deformation mechanisms. Results are expected to clarify origins of pure CO2 inclusions and may provide a new perspective for studies of high temperature deformation mechanisms.