Field and Model Studies of the Hydrologic and Structural Evolution of Faults in Granitic Rocks in the Upper Crust

了解断层和剪切带的水文特征对于确定流体如何在地壳中移动以及检查流体在流动过程中发生的流体-岩石相互作用至关重要。该项目将检查花岗岩中的断层，以获得评估断层演化过程中断层带渗透率时空变化所需的证据。渗透率结构将被纳入断裂带尺度和区域尺度上的流动数值模型。研究结果应加强流体在各种构造过程中作用的观测和理论基础。

Understanding the hydrology of faults and shear zones is critical to determining how fluids move through the crust and to examining the fluid-rock interactions that occur during flow. This project will examine faults in granite to obtain evidence needed to assess spatial and temporal changes in fault zone permeability during fault evolution. The permeability structure will be incorporated into a numerical model for flow at both fault zone scale and at regional scales. Results should strengthen observational and the theoretical basis for assessing the role of fluids in a variety of tectonic processes.