COLLABORATIVE RESEARCH: Interactions in Time and Space of Thermal and Mechanical Processes During Orogeny, Old Woman Mountains Area, SE California

加州东南部保留了20亿 沿着大陆的构造历史 美国的边缘。 以前在这个联合体上的工作 项目提供了大量关于前寒武纪的信息 构造演化、中生代挤压和新生代伸展 老女人山的故事 此次更新将 在此基础上研究中生代造山过程 在大陆地壳，特别是在典型的模糊的早期 的阶段。 该地区中生代上地壳为 第一次构造埋深范围从接近零到 超过20公里，然后在最后迅速挖掘出来， 中生代，并随后保存基本完整，通过 第三纪中期的延伸，强烈地叠加在邻近的 地区 工作将集中在开发热时计- 该地区的热历史和运动学历史， 韧性剪切带，温压法的改进及其 应用于快速演化的造山带， 岩体侵位和构造作用，并试图描述 通过高压捕虏体进入下陆壳 结果将被整合，试图发现在一些 详细说明了热和机械过程的相互作用 在大陆边缘动力学方面很活跃。

Southeastern California preserves a record of 2 billion years of tectonic history that occurred along the continental margin of the United States. Previous work on this consortium project has provided considerable information about Precambrian structural evolution, Mesozoic compression and Cenozoic exten- sional events in the Old Woman Mountains. This renewal will build on this information to address Mesozoic orogenic processes in continental crust, particularly on the typically obscure early stages of orogeny. The Mesozoic upper crust in this area was first tectonically buried to depths ranging from near zero to more than 20 kilometers, then exhumed rapidly at the end of the Mesozoic, and subsequently preserved largely intact through the mid-Tertiary extension that strongly overprinted adjacent regions. Work will focus on developing prograde thermochrono- metry for the region, the thermal and kinematic history of ductile shear zones, on refinement of thermobarometry and its application to rapidly evolving orogen, the linkage between pluton emplacement and tectonism and attempting to characterize the lower continental crust through high-pressure xenoliths. Results will be integrated in an attempt to discover in some detail the interactions of thermal and mechanical processes active in continental margin dynamics.