Holocene Activity of the North American-Caribbean Plate Boundary: A Fault Trench Study of the Septentrional Fault Zone, Dominican Republic

北美-加勒比板块边界的全新世活动：多米尼加共和国七断层带的断层沟研究

• 批准号: 9004779
• 负责人: Paul Mann
• 金额: $ 9万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-05-15 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004779&HistoricalAwards=false
• 关键词: Holocene; Activity; North; American; Caribbean

Knowledge of the rates of strike-slip motion along plate boundary faults is important to late Cenozoic tectonism and to earthquake hazard reduction efforts. This project addresses the Septentrional fault zone in the Dominican Republic which is the active, on shore extension of the North American- Caribbean plate boundary. The work will focus on fault trenching at three Quaternary fault scarps combined with radiocarbon age dating. These data are expected to date the ages of past earthquakes along the fault and directly determine geologic slip rates. These results can be used to test conflicting plate motion models and can be integrated into ongoing marine geophysical survey and GPS experiments along the plate boundary.

对板块走滑运动沿着速率的认识 边界断裂对晚新生代构造作用和 地震减灾工作。 该项目解决了 多米尼加共和国的七角断层带 活动，在北美-加勒比板块的海岸延伸 边界 这项工作将集中在断层挖沟在三个 第四纪断层崖结合放射性碳年代测定。 这些数据有望确定过去地震的年代 沿着断层，直接确定地质滑动速率。 这些结果可以用来检验相互矛盾的板块运动模型 并可纳入正在进行的海洋地球物理调查， 全球定位系统实验沿着板块边界。