Mesozoic-Cenozoic Tectonic Evolution of the Mojave Desert, California

加利福尼亚州莫哈韦沙漠的中生代-新生代构造演化

• 批准号: 9219191
• 负责人: Darrell Henry
• 金额: $ 16万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-12-15 至 1995-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219191&HistoricalAwards=false
• 关键词: Mesozoic; Cenozoic; Tectonic; Evolution; Mojave

Recent research in the Mojave Desert of California has defined the Mojave Extensional Belt, a regional zone of early Miocene-age continental extension, helped understand the tectonic development of the eastern California shear zone and its role in accommodating Pacific- North American plate motion and recognized several Mesozoic tectonometamorphic events. This renewal will attempt to constrain the initial dip of detachment faulting and several metamorphic and structural features associated with a fossil brittle-ductile transition along the detachment. Additionally, paleomagnetic work will help document the timing and magnitude of major early Miocene vertical axis rotations. Results will address several fundamental issues in extensional tectonics that involve how deep-seated rocks reach the surface.

最近在加州的莫哈韦沙漠的研究表明， 定义了莫哈韦伸展带， 中新世早期的大陆扩张，帮助我们了解 东加州剪切带的构造发展 亚太经济合作区及其在容纳太平洋-北美经济体中的作用 板块运动和公认的几个中生代 构造变质事件 这次更新将试图 限制了拆离断层的初始倾角， 与化石有关的变质和构造特征 沿着拆离带的脆韧性转变。 此外，古地磁工作将有助于记录 早中新世主垂直轴的时间和大小 旋转 结果将解决几个基本问题 在伸展构造学中， 到达水面