The Role of Water and Fluid Pathways in Low Temperature Deformation of Quartz-Rich Rocks

[00:87607]水通过许多机械和化学过程对岩石的变形有深远的影响。在1500℃到3000℃之间，有一个过渡状态，这两个过程都被认为是复杂的，而且人们对水的影响方式知之甚少。本项目将试图确定和量化水在促进富石英岩石低温变形过程中与溶解相关、与断裂相关和与位错相关过程的相互作用中的作用。该方法将包括使用技术来更好地了解来自各种结构和地层环境的自然样品中水的存在和形式。研究结果有望为亚绿片岩条件下水在变形过程中的作用提供更准确的模型，并将适用于上地壳的变形过程。

0087607OnaschWater has a profound effect on the deformation of rocks through a number of mechanical and chemical processes. Between 1500C and 3000C there is a transition regime where both processes are thought to operate is complex and as yet poorly understood ways that are affected by water. This project will attempt to identify and quantify the roles of water in facilitating the interplay of solution - related, fracture - related, and dislocation related processes during low temperature deformation of quartz - rich rocks. The approach will include use of techniques to better understand the presence and form of water in natural samples that come from a variety of structural and stratigraphic settings. Results are expected to provide a more accurate model of the role of water during deformation under subgreenschist conditions, and will be applicable to deformation processes in the upper crust.