RUI: The Role of Extension During the Evolution of a Transform Plate Boundary, Northeastern Vaja California, Mexico

RUI：墨西哥下加利福尼亚州东北部转换板块边界演化过程中扩张的作用

• 批准号: 9305131
• 负责人: M. Meghan Miller
• 金额: $ 7.52万
• 依托单位: Central Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9305131&HistoricalAwards=false
• 关键词: RUI; Role; Extension; During; Evolution

The Pacific-North America plate boundary evolved from a continent-ocean convergent margin to a transform-dominated rift margin to a transform-dominated rift margin with the passing of the Rivera triple junction in late Miocene time. Baja California, Mexico is one of the areas where the differing roles of extension and strike slip faulting can be documented throughout the evolution of a successful continental rift. This project includes mapping, structural studies, stratigraphic and geochemical studies and Ar/Ar geochronology of Miocene and younger rocks in the southern Sierra Juarez, Baja California. Results will provide insights into the role of continental extension during the transfer of continental crust to an oceanic plate during the transition from a convergent to transform-dominated rift plate boundary.

太平洋-北美板块边界是从 陆-洋会聚边缘向转换主导的 裂谷边缘转变为一个以变形为主的裂谷边缘， 晚中新世时期里维拉三重交汇点的经过。 墨西哥的下加利福尼亚是 伸展断层和走滑断层的不同作用， 记录了一个成功的 大陆裂谷。 该项目包括测绘、结构 研究、地层学和地球化学研究以及Ar/Ar 南部中新世和更年轻岩石的年代学 下加利福尼亚的华雷斯山脉。 结果将提供 对大陆伸展作用的认识 大陆地壳向大洋板块的转移 从汇聚型向转换型裂谷过渡 板块边界