RUI: Late Cenozoic Regional Deformation in Southwestern Montana: Evidence from a Neogene Paleovalley

RUI：蒙大拿州西南部晚新生代区域变形：来自新近纪古山谷的证据

• 批准号: 9105457
• 负责人: William Fritz
• 金额: $ 9.55万
• 依托单位: Georgia State 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: 1991-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9105457&HistoricalAwards=false
• 关键词: RUI; Late; Cenozoic; Regional; Deformation

Surface topography in principle should be perturbed by the passage of a hot spot plume because of the heating and cooling of the lithosphere during passage. However, geologic record of such topographic response is very sparse. This project will investigate sediments of Neogene age in southwestern Montana that were deposited in a paleovalley during the possible passage of the Yellowstone hot spot. The work will involve testing for drainage reversals, to attempt to date the deposits and to determine source of the sediments. Results will provide unusual insight into topographic changes that may have occurred during the passage of the Yellowstone hot spot across Montana.

原则上，由于岩石圈在通过过程中的加热和冷却，表面地形会受到热点羽流通过的扰动。 然而，这种地形响应的地质记录非常稀疏。 该项目将调查蒙大拿州西南部新近纪沉积物，这些沉积物是在黄石热点可能通过期间沉积在古山谷中的。 这项工作将包括测试排水逆转，试图确定沉积物的年代并确定沉积物的来源。 结果将为黄石热点穿越蒙大拿州期间可能发生的地形变化提供不同寻常的见解。