Collaborative Research: Late Cenozoic Evacuation of the Rocky Mountain Orogenic Plateau

合作研究：落基山造山高原晚新生代疏散

• 批准号: 0106223
• 负责人: David Dethier
• 金额: $ 7.39万
• 依托单位: Williams College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0106223&HistoricalAwards=false
• 关键词: Collaborative; Research; Late; Cenozoic; Evacuation

0106029 Heller0106223 DethierWidespread remnants of Cenozoic sedimentary rocks in the central Rocky Mountains may indicate the former presence of a large post-Laramide basin fill that has subsequently been largely removed. If such a regional basin fill can be demonstrated, it would provide a regional marker for determining the extent and rate of sediment removal and provide a marker for vertical tectonic movement during the late Cenozoic. This project will combine mapping fission-track and cosmogenic nuclide geochronometry to attempt to determine the former extent and continuity of the post-Laramide basin fill, and to search for possible tectonic or geologic causes of the observed changes. Results will help clarify the competing effects of tectonic verses climatically driven uplift.

0106029落基山脉中部广泛分布的新生代沉积岩残留物可能表明，以前曾存在大型的后拉莱姆盆地填充物，后来基本上被清除。如果能够证明这种区域盆地充填，它将为确定沉积物清除的程度和速率提供区域标志，并为晚新生代的垂直构造运动提供标志。该项目将结合裂变径迹测绘和宇宙成因核素地质年代学，试图确定后拉拉米德盆地充填的以前的范围和连续性，并寻找观测到的变化的可能构造或地质原因。结果将有助于阐明构造与气候驱动的隆起之间的竞争效应。