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

RUI：侏罗纪-白垩纪构造地层学和山间地体西缘结构，奇尔科湖地区，不列颠哥伦比亚省

• 批准号: 9304426
• 负责人: Paul Umhoefer
• 金额: $ 13.1万
• 依托单位: Northern Arizona University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304426&HistoricalAwards=false
• 关键词: RUI; Jurassic; Cretaceous; Tectonostratigraphy; Structure

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.

北美西部边缘的大部分地区都是增生的， 由地壳碎片组成， 大陆在过去300 Ma的俯冲。 的 不列颠哥伦比亚省和阿拉斯加的岛屿带是 最大的碎片已被增生。 这个项目是 重点确立“对接”的时机和性质 与北美的关系。 数据的获取 这种碰撞的时间和几何形状对于 了解该地区的整体构造演化。 因为碰撞往往会破坏局部甚至全球 俯冲的模式，这些新的信息可能有整个 地球的意义，在理解的原因， 板块运动的变化