Collaborative Research: Late Cenozoic Detachment Faulting in the Western Salton Trough: Strain Partitioning in an Oblique Active-Margin Rift

合作研究：西部索尔顿海槽晚新生代拆离断层作用：斜活动边缘裂谷中的应变划分

• 批准号: 0125454
• 负责人: Bernard Housen
• 金额: $ 9.1万
• 依托单位: Western Washington University
• 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: 2002-02-01 至 2005-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0125454&HistoricalAwards=false
• 关键词: Collaborative; Research; Late; Cenozoic; Detachment

The process of rifting of continents to produce oceanic lithosphere is a first order phenomenon on Earth. Unfortunately, most rifted margins are buried by thick accumulations of sedimentary rock, hindering direct observation of the structures which formed during rifting. This project will address several significant questions about oblique rifting with a multi-disciplinary study of the Salton Trough in southern California. This region is undergoing active extension and right-lateral strike-slip faulting related to opening of the Gulf of California and the San Andreas fault. Exposures of bedrock are excellent and there is an opportunity to examine a plate margin caught in the process of forming. A combination of geological, sedimentological, geophysical, and geochronological methods will be brought to bear to study the partitioning of strain between strike-slip and normal faults and the accompanying sedimnetological response to each.

大陆裂谷产生海洋岩石圈的过程是地球上的一级现象。不幸的是，大多数裂谷边缘被厚厚的沉积岩堆积所掩埋，阻碍了对裂谷期间形成的结构的直接观察。该项目将通过对南加州索尔顿海槽的多学科研究来解决有关倾斜裂谷的几个重要问题。该地区正在经历与加利福尼亚湾和圣安德烈亚斯断层张开有关的活跃伸展和右旋走滑断层作用。基岩的暴露效果非常好，并且有机会检查形成过程中卡住的板块边缘。将结合地质学、沉积学、地球物理和地质年代学方法来研究走滑断层和正断层之间的应变分配以及相应的沉积学响应。