Petrographic and Geochemical Study of Mid-Cretaceous Plutonsof the Coast Crystalline Orogen, Southeast Alaska

阿拉斯加东南部海岸结晶造山带中白垩纪岩体的岩相学和地球化学研究

• 批准号: 8719755
• 负责人: Maria Crawford
• 金额: $ 7万
• 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: 1988
• 资助国家: 美国
• 起止时间: 1988-02-01 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8719755&HistoricalAwards=false
• 关键词: Petrographic; Geochemical; Study; Mid; Cretaceous

This project will use a combination of methods to study igneous plutons intrusive into the deep crust of southeastern Alaska and British Columbia. This area is the site of convergence between the Pacific and N. American tectonic plates, and the country rocks in which the plutons occur were deformed and metamorphosed during the prolonged convergence. The plutonic rocks will be studied to determine their post-emplacement history interms of pressure (depth) and temperature as a function of time. This latter information will help constrain the deformation and uplift history of the entire coast plutonic complex.

该项目将结合使用多种方法来研究火成岩渗透到阿拉斯加东南部和不列颠哥伦比亚省的深层地壳中。 该区域是太平洋和美国构造板块之间的收敛地点，在长时间的融合期间，发生岩石发生的国家岩石发生了变形和变形。 将研究岩石岩石，以确定其置换后的压力（深度）和温度随时间的函数。 后者的信息将有助于限制整个海岸岩石综合体的变形和上升历史。