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.

本项目将采用综合方法研究火成岩 侵入阿拉斯加东南部地壳深处的岩浆， 不列颠哥伦比亚省。 这一地区是两种文化交汇的地方， Pacific和N.美国的构造板块，以及其中的岩石 岩体在长期变形变质过程中， 收敛 将对深成岩进行研究， 侵位后的压力（深度）和温度历史， 时间的函数。 后一种信息将有助于限制 整个海岸深成杂岩的变形和隆升历史。