COLLABORATIVE RESEARCH: Structural and Petrologic Studies in the TenPeak Pluton and Surrounding Area, North Cascades: A Window into Arc Processes in the Mid to Lower Crust

合作研究：北喀斯喀特 TenPeak 岩体及周边地区的结构和岩石学研究：了解中下地壳弧形过程的窗口

• 批准号: 9812621
• 负责人: Susan DeBari
• 金额: $ 3.15万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812621&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Structural; Petrologic; Studies

9812621 Debari The tectonic setting of the Cascades Core remains controversial, particularly the manner in which the high grade rocks were loaded during the development of the Cretaceous arc and the associated magmatic events. Several models of magmatic processes in the deep crust of continental arcs have been advanced, but the lack of deep crustal exposures have provided only limited constraints for the applicability of these models. This project will focus on the structural, metamorphic, plutonic and geochemical processes operating in the Ten Peak pluton, which is the deepest exposed pluton of significant size in the Cascades Core. Results are expected to clarify the role of mafic magmas in generating the pluton, to provide insights into deep crustal emplacement mechanisms and to allow a better understanding of the evolution and loading history of the Cascade arc. .

9812621 Debari小瀑布岩芯的构造背景仍然存在争议，特别是在白垩纪弧和相关岩浆事件的发展过程中，高品位岩石的加载方式。 大陆弧地壳深部岩浆作用的几种模型已被提出，但缺乏地壳深部暴露，这些模型的适用性提供了有限的限制。 该项目将重点关注十峰岩体中的结构、变质、深圳湾和地球化学过程，该岩体是喀斯喀特地核中最深的暴露且规模巨大的岩体。 结果预计将澄清的作用，镁铁质岩浆在生成的岩体，提供深入了解地壳深部侵位机制，并允许更好地了解Cascade弧的演化和加载历史。 .