Mesozoic-Cenozoic Tectonic Evolution of the Mojave Desert, California

莫哈韦地块以前被认为是一个相对完整的地体，现在已被证明是早期逆冲作用的产物，随后是新生代伸展作用和走滑断裂作用。造成晚中生代和新生代活动的大部分主要构造元素已经被确定，但是涉及跨莫哈韦-西兰剪切带和东加利福尼亚剪切带演化的关键未研究过程仍然存在。该项目将定义这些特征的极限，以了解相关应变的几何、运动学和时间。结果将允许构建一个模型，以恢复莫哈韦沙漠地区，考虑所有山脉尺度平移和垂直轴旋转。该模型将有助于调和南加州边界对太平洋和北美板块之间的板块运动的反应。

9418834 Dokka The Mojave block previously considered to be a relatively intact terrane has been shown to be the product of Sevier-aged thrusting followed by Cenozoic extensions and strike-slip faulting. Most of the major tectonic elements responsible for late Mesozoic and Cenozoic activity have been identified, however critical unstudied processes involved in the evolution of the Trans Mojave- Sierran shear zone and the Eastern California shear zone remain. The project will define the limits of these features to understand the geometry, kinematics and timing of the associated strain. Results will allow construction of a model to palinspastically restore the Mojave Desert region, accounting for all mountain range scale translations and vertical axis rotations. The model will be useful in reconciling the response of the Southern California borderland to the plate motions between the Pacific and North American plates.