Intracrustal Magma Evolution in a Jurassic Island Arc: A Case Study of the Wrangellian Crustal Section from Vancouver Island, Canada

侏罗纪岛弧的地壳内岩浆演化：加拿大温哥华岛兰格尔地壳剖面的案例研究

• 批准号: 9307519
• 负责人: Susan DeBari
• 金额: $ 1.8万
• 依托单位: San Jose State University Foundation
• 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: 1993-03-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9307519&HistoricalAwards=false
• 关键词: Intracrustal; Magma; Evolution; Jurassic; Island

The principal objective of this research project is to document magmatic evolution within an exposed crustal section of a Jurassic island-arc complex that was accreted to the North American continent. Rock units representative of the lower, middle and upper crustal levels of the Bonanza arc of Vancouver Island and others representative of preexisting crust into which the magmatic rocks were emplaced will be studied by detailed field work, geochemical analysis, and geochemical modelling. The study should elucidate the internal structure of the arc and the chemical evolution of arc magmas as they pass through and interact with the surrounding crust.

本研究项目的主要目标是 记录暴露地壳内的岩浆演化 侏罗纪岛弧复合体的一部分， 到北美大陆。 岩石单位代表 富矿带的地壳下层、中层和上层 弧的温哥华岛和其他代表 岩浆岩在地壳中形成的 将通过详细的实地工作、地球化学 分析和地球化学建模。 这项研究应该 阐明了电弧的内部结构和化学成分， 弧岩浆通过并相互作用时的演化 与周围的地壳。