COLLABORATIVE RESEARCH: Evolution and Assembly of Archean and Lower Proterozoic Elements in the Trans-Hudson Orogen Saskatchewan

合作研究：萨斯喀彻温省跨哈德逊造山带太古代和下元古代元素的演化和组装

• 批准号: 9106138
• 负责人: Marion Bickford
• 金额: $ 9.4万
• 依托单位: Syracuse University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9106138&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Evolution; Assembly; Archean

The assembly of continental crust into large continental cratons typically involves several continent-continent collisions. Relatively shallow level parts of such collisions can be addressed in active or young system such as the Himalaya, however, deep portions are only exposed in ancient orogens. This project, a collaboration between Syracuse University and University of California, Santa Cruz, will investigate the crustal evolution of the Archaean Rae-Hearne platform and the bounding Snowbird Tectonic zone in northeastern Saskatchewan to document Archean and early Proterozoic crustal growth and to evaluate the effect of terminal collision within the orogen at 1.8 Ga. Because approximately 20 km of crust has bee removed by uplift and erosion, a view of mid- crustal levels of orogeny will be directly studied. Results are expected to help understand not only Archean events in the Trans- Hudson orogen but also deeper parts of compressional tectonic settings generally.

大陆地壳组装成大型大陆 碰撞通常涉及几个大陆-大陆碰撞。 这种冲突的相对较浅的部分可以被解决 在活跃或年轻的系统，如喜马拉雅山，然而， 部分仅在古造山带中出露。 本工程 锡拉丘兹大学和 加州，圣克鲁斯，将调查地壳演化的 西太平洋的雷-赫恩地台和边界的雪鸟构造 萨斯喀彻温省东北部的一个区域，以记录太古代和早期 元古宙地壳生长及其终端效应评价 造山带内碰撞发生于1.8Ga。 因为大约20个 公里的地壳已被抬升和侵蚀，一个中期的观点， 将直接研究造山带的地壳水平。 结果 不仅有助于了解跨太平洋地区的太古宙事件， 哈德逊造山带以及挤压构造的更深部分 设置一般。