Assembling a Continent: Deep Crustal Processes at an Archean Plate Boundary, Snowbird Tectonic Zone, Saskatchewan

组装大陆：萨斯喀彻温省雪鸟构造带太古代板块边界的深层地壳过程

• 批准号: 9406443
• 负责人: Michael Williams
• 金额: $ 17.99万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9406443&HistoricalAwards=false
• 关键词: Assembling; Continent; Deep; Crustal; Processes

9406443 Williams The tectonics of the early earth is controversial and difficult to study. The snowbird tectonic zone is a long boundary between northern Saskatchewan tectonic provinces, that has recently been tecontized in the mid-Archean (3.2 Ga). These rocks contain unusually well perceived high pressure minerals and fabrics presumably due to Archean collisions. This project will study three distinct terranes within the Snowbird zone to unravel how each formed and how they came to be joined by Archean tectonic displacement. Results have considerable significance to the early development of cratons, especially deep crustal processes.

9406443 Williams 早期地球的构造是有争议的并且很难研究。 雪鸟构造带是萨斯喀彻温省北部构造省之间的一条长边界，最近在太古代中期（3.2 Ga）发生了构造作用。这些岩石含有异常明显的高压矿物和织物，可能是由于太古代碰撞造成的。 该项目将研究雪鸟区内的三个不同地体，以揭示每个地体的形成方式以及它们如何通过太古代构造位移连接在一起。 研究结果对克拉通早期发育，特别是深部地壳过程具有重要意义。