Tectonic Reactivation of the Southeastern Wyoming Province During the Proterozoic: Chronology, Metamorphism and Deformational Processes

怀俄明州东南部的夏延带将太古宙怀俄明省与科罗拉多省元古界的增生岛弧岩石分开。沿着缝合线，几个平行的糜棱岩带将主断裂带以北的高品位、重新激活的太古宙地壳分开。该项目将侧重于开发这一重新活动的地壳，并将涉及测绘、年龄测定和地球化学分析。这些结果将有助于了解太古代怀俄明省和科罗拉多省之间碰撞带的细节，也可能为深入了解主要碰撞带外部带基底隆起根带的深层构造特征提供帮助。

The Cheyenne belt of southeastern Wyoming separates the Archean Wyoming Province from accreted island-arc rocks of the Proterozoic Colorado Province. Along the suture, several parallel mylonite zones separate high grade, reactivated Archean crust north of the main fault zone. This project will focus on the development of this reactivated crust and will involve mapping, age dating and geochemical analysis. Results will help understand the details of the collision zone between the Archean Wyoming Province and the Proterozoic Colorado Province and may also provide insight into the deep-seated structural character of the root zone of a basement uplift in the external zone of a major collisional belt.