Transition from Intergranular to Fracture-Dominated Fluid Flow: Structural and Diagenetic Controls in a Sand Rich Accretionary Prism

在增生杂岩的变形过程中， 经历大量的损失，产生活跃的水文系统。 随之而来的流体流动实际上影响了本发明的各个方面。 复杂的构造演化，必须了解，以评估 这个过程 本研究将探讨一个新近纪增生 位于华盛顿州大陆边缘的复合体。 映射将 沿着悬崖暴露和潮汐带进行， 混杂岩带和正常沉积物之间的接触暴露出来。 伴生脉和胶结物的构造岩相学将 进行检查和流体包裹体分析，以表征 岩石-流体相互作用的本质。 结果 将讨论混杂岩带在多大程度上是流体的通道 并将有助于定义水文系统在积极变形 增生复合体

During deformation in accretionary complexes, sediments undergo large volume losses spawning active hydrologic systems. The consequent fluid flow affects virtually all aspects of the complex's tectonic evolution and must be understood to evaluate this process. This study will investigate a Neogene accretionary complex on the Washington State continental margin. Mapping will be conducted along cliff exposures and the tidal zone where contacts between melange zones and normal sediments are exposed. The structural petrography of associated veins and cements will be examined and fluid inclusions analyzed to characterize the nature of rock-fluid interactions that were operative. Results will address to what extent melange zones are conduits for fluids and will help define hydrologic systems in actively deforming accretionary complexes.