Neogene Uplift and Fault History of the Black Mountains, Death Valley, California

加利福尼亚州死亡谷黑山的新近纪隆起和断层历史

• 批准号: 8816562
• 负责人: Laura Serpa
• 金额: $ 8.86万
• 依托单位: University of New Orleans
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-12-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816562&HistoricalAwards=false
• 关键词: Neogene; Uplift; Fault; History; Black

There are a number of models for the evolution of extensional basin systems, and the Death Valley region has figured prominently in their development. This project will attempt to distinguish between two models involving large-scale kinematics of crustal extension. In one model extension is accommodated by the movement of originally adjacent upper crustal fault blocks above a deep detachment whereas the other suggests that adjacent upper crustal fault blocks above a deep detachment whereas the other suggests that adjacent blocks originally were on top of each other prior to Cenozoic extension. Mapping of faults to establish fault chronologies and orientation and 40Ar/39Ar geochronology to clarify the uplift history are planned. Results are expected to help define the kinematics of extensional basin systems.

伸展盆地体系的演化有多种模式，死亡谷区在其发展过程中扮演了重要角色。该项目将试图区分涉及大规模地壳伸展运动学的两种模型。在一种模式中，伸展是由原相邻的上地壳断块在深拆离之上的运动所调节的，而另一种模式则表明，相邻的上地壳断块在深拆离之上，而另一种模式则表明，在新生代伸展之前，相邻的断块原本是相互叠加的。计划绘制断层图以确定断层年代学和方向，并计划绘制40Ar/39Ar年代学以阐明隆起历史。预计结果将有助于确定伸展盆地系统的运动学。