Effects of Dynamic Processes on Permeablility

汇聚边缘环境中的断层似乎是沉积物压实过程中流体排出的重要管道。这一过程对控制沉积物的蚀变和物理性质具有重要意义，对确定沉积物层序的褶皱和变形性质具有重要意义。然而，人们对沿个别断裂带和跨断裂带的沉积物的渗透性知之甚少。正是这种渗透性结构最终控制了流体的运动。本项目将研究沿断层驱替前后渗透率的变化。具体来说，该项目将使用实验和理论技术来检查富泥沉积物的水文地质特性在变形响应中的变化，并将评估这对沉积楔积动力学的影响。首席研究员在该领域这些过程的研究中有着杰出的记录。目前的项目将把他的工作扩展到实验室。

Faults in convergent margin environments appear to be important conduits for the expulsion of fluids during sediment compaction. This process is important in controlling the alteration and physical properties of the sediment, and may be significant in determining the nature folding and deformation of sediment sequences. Little is known, however, about the permeability of sediments along and across individual fault zones. It is this permeability structure that ultimately controls fluid movement. The present project will examine variations in permeability before and after displacement along a fault. Specifically the project will use experimental and theoretical techniques to examine the change in hydrogeological properties of mud rich sediments in response to deformation and will evaluate the consequences this has for the dynamics of accreting sedimentary wedges. The principal investigator has a distinguished record in studies of these processes in the field. The present project will extend his work to the laboratory.