RUI: Jurassic-Cretaceous Tectonostratigraphy and Structure of the Western Margin of the Intermontane Terrane, Chilko Lake Area, British Columbia

北美西部边缘的大部分是由过去300 Ma俯冲过程中与大陆碰撞的地壳碎片组成的。不列颠哥伦比亚省和阿拉斯加州的岛屿带是被沉积的最大的碎片之一。该项目的重点是确定该地体与北美“对接”的时机和性质。获取有关这种碰撞的时间和几何形状的数据对于了解该地区的整体构造演化很重要。由于碰撞往往会扰乱局部的、往往是全球的俯冲模式，这一新信息可能对理解板块运动变化的原因具有整个地球的意义。

Much of the western edge of North America is accreted, consisting of crustal fragments that collided with the mainland during subduction over the past 300 Ma. The Insular Belt of British Columbia and Alaska is one the largest pieces to have been accreted. This project is focused on establishing the timing and nature of "docking" of this terrane with North America. Acquisition of data on the timing and geometry of such collisions is important for understanding the overall tectonic evolution of the region. Because collisions tend to disrupt local and often global patterns of subduction, this new information may have whole earth significance in terms of understanding the causes of changes in plate motions.