Late Mesozoic History of the Western Luning-Fencemaker Belt and the Pine Nut Fault, West-Central Nevada

最近在美国西部科迪勒拉的工作集中在内华达山脉和西部大盆地之间的断层上可能存在的大量中生代位移。然而，对这些断层的位置、时间和运动感的限制很差。其中一个是位于内华达州西部的松子断层，它将两个具有非常不同构造历史的同时期中生代组合放在一起。本研究将采用综合的构造、古地磁、地质年代学和地温测量方法来约束松子断层的运动历史。研究结果将有助于厘清西科迪勒拉晚中生代构造演化，并对活动板块边缘环境下的位移场划分具有重要意义。

Recent work in the western U.S. Cordillera has focussed on possible substantial Mesozoic displacement on faults between the Sierra Nevada and the western Great Basin. However, the location, timing and sense of movement on these faults is poorly constrained. One of these, the Pine Nut fault in western Nevada, juxtaposes two coeval Mesozoic assemblages that have very different structural histories. This study will use an integrated structural, paleomagnetic, geochronologic and geothermobarometric approach to constrain the kinematic history of the Pine Nut fault. The results will clarify the late Mesozoic tectonic evolution of the western Cordillera, and will have broad implications for displacement field partitioning in active plate margin settings.