Collaborative Research: Evolution and Exhumation of the Deep Crust along the Snowbird Tectonic Zone: Implications for Reactivation of Archean Cratons

合作研究：雪鸟构造带深部地壳的演化和折返：对太古代克拉通重新激活的影响

• 批准号: 0001152
• 负责人: Michael Williams
• 金额: $ 14.29万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001152&HistoricalAwards=false
• 关键词: Collaborative; Research; Evolution; Exhumation; Deep

0001152 Williams0001131 Bowring The presence of high-pressure rocks at the surface implies considerable crustal-scale tectonism, however the processes by which this occurs during the evolution of a continental shield is not well understood. This project will examine the Snowbird tectonic zone of the western Canadian Shield to test two models for the age and tectonic scenario responsible. The work also involves application and refinement of a new electron microproble age mapping and dating technique that may prove to be widely applicable to studies of lower crustal rocks and metamorphosed rocks in general.

0001152 Williams0001131 Bowring地表高压岩石的存在意味着相当大的地壳规模的构造作用，然而，在大陆盾的演化过程中发生这种作用的过程还没有得到很好的理解。 该项目将研究加拿大地盾西部的雪鸟构造带，以测试两个模型的年龄和构造情景。 这项工作还涉及一种新的电子微探针年龄制图和定年技术的应用和改进，这种技术可能被证明广泛适用于下地壳岩石和一般变质岩的研究。