Kinematic History of the Pasayten and Entiat Fault Zones, Northwestern Washington

晚白垩世至第三纪早期的横流断裂作用与北美西北部的地体吸积有关，对此存在争议，并有几种不同的假说来解释从华盛顿北部到加拿大的造山带的演化。该项目将收集关于位移历史(随时间的剪切感)、变形期间的压力-温度条件以及沿两个主要的盆地边界断层--华盛顿州西北部的Pasayten和Entiat断层--运动的年龄的数据。这些结果将有助于阐明北美晚中生代主要造山带之一的收缩和横流构造的相对重要性，以及关于汇聚边缘附近的横流断层所起作用的更基本的问题。

The role of transcurrent faulting during Late Cretaceous to early tertiary deformation associate with terrane accretion to northwest North America is controversial, and several different hypotheses exist to explain the evolution of the orogen from Washington north into Canada. This project will collect data on displacement history (sense of shear through time), the Pressure-Temperature conditions during deformation and the age of movements along two major basin-bounding faults, the Pasayten and Entiat faults in northwestern Washington. Results will help elucidate the relative importance of contractional and transcurrent structures in one of the major Late Mesozoic orogenic belts of North America, and more fundamental questions regarding the role of transcurrent faults near convergent margins.