Collaborative Research: Thrust Burial, Metamorphism, and Episodic Tectonic Exhumation of the Hinterland of the Sevier Orogenic Belt, Northwestern Utah and Southern Idaho

一般山地带，特别是塞维尔造山带的前陆与结晶腹地的关系问题是一个重要而长期存在的问题。本研究的重点是腹地的岩石，并将采用各种技术来提取有关这些高品位变质岩的加载时间和挖掘时间的信息。这项研究将揭示发生在腹地下地壳的过程类型，特别是包括这些过程的绝对年代测定。更重要的意义在于，利用这些信息，可以及时地将腹地下地壳的事件与前陆上地壳的沉积事件进行对比。

9805007 Wells The problem of the relationship between the foreland and the crystalline hinterland in mountains belts in general, and in the Sevier orogenic belt in particular is a significant and long standing problem. This study focuses on rocks of the hinterland, and will employ a variety of techniques to extract information on the timing of loading and of exhumation of these high grade metamorphic rocks. The study will reveal the types of processes that occur in the lower crust of a hinterland, in particular, include the absolute dating of these processes. The larger significance is that with this information, the events in the lower crust of the hinterland can be correlated in time with sedimentary events in the upper crust of the foreland.