Collaborative Research: Tertiary Tilting andExhumation, Coast Mountains (RUI)

合作研究：第三纪倾斜和折返，海岸山脉 (RUI)

• 批准号: 9805124
• 负责人: Margaret Rusmore
• 金额: $ 10.77万
• 依托单位: Occidental College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-15 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9805124&HistoricalAwards=false
• 关键词: Collaborative; Research; Tertiary; Tilting; andExhumation

9805124 Rusmore The Coast Mountains of British Columbia are central to two scientific questions concerning how an oblique convergent margin operates. These involve the extent and rate of along-orogen transport of terranes and uplift and erosion of attached blocks. Paleomagnetic results indicating long-distance along-orogen transport are ambiguous because the plutons that were used for these data may have been tilted. Part of this project will test for tilting using new techniques of low-temperature closure age methods. These and associated structural data will also address the amount and rate of tectonic uplift in this nearly strike-slip end member of oblique collisional circumstances. The work will benefit from and will complement geological and geophysical study along the ACCRETE transect. Results are expected to help resolve the degree of northward transport of terranes along the western coast of North America and the uplift associated with oblique collision.

9805124鲁斯莫尔不列颠哥伦比亚省海岸山脉是关于斜向收敛边缘如何运作的两个科学问题的核心。这些因素包括沿造山带运移地体的程度和速度，以及相连地块的抬升和侵蚀。古地磁结果表明沿造山带的长距离迁移是不明确的，因为用于这些数据的深成岩块可能已经倾斜。该项目的一部分将使用低温关闭老化方法的新技术来测试倾斜。这些和相关的构造数据还将解决在斜碰撞环境下这个接近走滑的端部的构造抬升的数量和速度。这项工作将受益于并将补充沿共生横断面的地质和地球物理研究。预计结果将有助于解决北美西海岸地体向北迁移的程度，以及与斜碰撞相关的隆起问题。