Collaborative Research: Detachment Faulting and Basin Development in a Convergent Setting: The Cordillera Blanca, Peru

合作研究：聚合环境中的拆离断层作用和盆地发育：秘鲁布兰卡山脉

• 批准号: 0126309
• 负责人: Brendan McNulty
• 金额: $ 17.28万
• 依托单位: California State University-Dominguez Hills Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-02-15 至 2006-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0126309&HistoricalAwards=false
• 关键词: Collaborative; Research; Detachment; Faulting; Basin

Detachment faults are large-scale extensional structures that are responsible for much of the extension observed in the crust, however the origin and evolution of detachments are poorly understood and controversial. This project will attempt to address the mechanisms and rates of detachment and associated basin development in an active modern example - the Cordillera Blanca detachment fault in the Peruvian Andes. The work centers on the temporal and spatial evolution of the supradetachment basin, the denudation history of the uplifted footwall, and the Quaternary kinematic history. Results will be incorporated into tectonic models for detachment faulting in oceanic-continental convergent settings, which are expected to be of general application in this tectonic setting.

脱离断层是大规模的延伸结构，这些结构负责在地壳中观察到的大部分延伸，但是脱离的起源和演变知之甚少和有争议。该项目将尝试在一个活跃的现代例子中解决分离和相关盆地开发的机制和速率 - 秘鲁安第斯山脉中的Cordillera Blanca脱离断层。该工作集中在遍布盆地的时间和空间演变上，隆起的脚壁的剥离历史以及第四纪运动史。结果将被纳入构造模型中，以用于海洋 - 汤融合设置中的脱离断层，预计将在这种构造环境中进行一般应用。