RUI: Structural and Metamorphic Evolution of the Intermontane Coast Plutonic Complex Transition, Bella Coola,British Columbia

RUI：山间海岸深成杂岩转变的结构和变质演化，贝拉库拉，不列颠哥伦比亚省

• 批准号: 9105026
• 负责人: Margaret Rusmore
• 金额: $ 6.6万
• 依托单位: Occidental College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9105026&HistoricalAwards=false
• 关键词: RUI; Structural; Metamorphic; Evolution; Intermontane

The pacific northwest consists of several allochthonous terranes that were joined to North America during the Mesozoic and Tertiary. The Coast Plutonic Complex, an 1800 km-long belt of metamorphic and plutonic rocks obscures the contact between two extensive and probably far-traveled crustal fragments, the Intermontane and Insular superterranes. Models for the accretion of the western fragment depend on a clear understanding of the structural evolution of the Coast Plutonic Complex, yet the age and style of deformation are poorly known. This project will address these issues by a detailed structural and metamorphic investigation of these rocks near Bella Coola, British Columbia. Results are important to understanding of the tectonics of terrane accretion.

太平洋西北部由几个外来的 在中生代与北美洲相连的恐龙， 三纪 海岸深成杂岩，一条1800公里长的 变质和深成岩石掩盖了两个 广泛的，可能是遥远的地壳碎片， 山间和岛屿上的岛屿。 吸积模型 西方的碎片取决于一个清晰的理解 海岸深成杂岩的构造演化，但年龄和 变形类型知之甚少。 该项目将解决 这些问题通过详细的结构和变质调查 在不列颠哥伦比亚省的贝拉库拉附近。 结果 这对理解加积的构造很重要。