Collaborative Research: Structural and Geochronologic 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: 9303824
• 负责人: George Gehrels
• 金额: $ 4.33万
• 依托单位: University of Arizona
• 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 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9303824&HistoricalAwards=false
• 关键词: Collaborative; Research; Structural; Geochronologic; Study

9303824 Gehrels 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.

9303824 Gehrels海岸MTS。北美洲科迪勒拉造山带由几个重要的构造特征组成，包括世界上最大的岩基之一、一个主要的缝合带、区域性广泛的上角闪岩麻粒岩相岩石和一个主要的逆冲带。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。这些结果将对板块边缘过程的时间和风格提供严格的约束，特别是在俯冲停止和造山带平行转换运动开始时。