Collaborative Research: Structural and Geochronological Study of the Coast Mountains Orogen Near Portland Canal, SE Alaska and Coastal British Columbia

合作研究：阿拉斯加东南部波特兰运河附近的海岸山脉造山带和​​不列颠哥伦比亚省沿海地区的结构和年代学研究

• 批准号: 9304321
• 负责人: Maria Crawford
• 金额: $ 19.28万
• 依托单位: Bryn Mawr College
• 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: 1993-09-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304321&HistoricalAwards=false
• 关键词: Collaborative; Research; Structural; Geochronological; Study

9304321 Crawford The Coast Mts. Orogen of the North American Cordillera, comprises several important tectonic features, including one of the largest batholiths in the world, a major suture zone, regionally extensive upper amphibolite granulite facies rocks and a major thrust belt. This research will determine the detailed geochronology of the major structures and integrate the findings with interpreted plate motions. The results will provide tight constraints on timing and style of plate-margin processes, especially at the cessation of subduction and onset of orogen-parallel transform motion.

北美科迪勒拉的海岸山造山带包括几个重要的构造特征，包括世界上最大的基岩之一，一个主要的缝合带，区域广泛的上部角闪岩麻粒岩相岩和一个主要的冲断带。这项研究将确定主要构造的详细地质年代学，并将这些发现与解释的板块运动结合起来。研究结果将对板块边缘作用的时间和类型提供严格的约束，特别是在俯冲停止和造山带平行转换运动开始时。