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.

该研究项目的主要目标是记录北美大陆增生的侏罗纪岛弧复合体暴露的地壳部分内的岩浆演化。 将通过详细的现场工作、地球化学分析和地球化学模拟来研究代表温哥华岛富矿弧的下、中和上地壳层的岩石单元以及代表岩浆岩就位的先存地壳的其他岩石单元。 这项研究应阐明弧的内部结构以及弧岩浆穿过周围地壳并与其相互作用时的化学演化。