Structural and Thermal Evolution of the Sierra Nevada- Basin and Range Transition Zone

9725371米勒是北美西部的盆地和山脉省，它是由主要的沿海伸展作用产生的，在这种伸展过程中，通常E-倾角的历史断裂使地壳块体旋转，从上到西重复运动。米勒和杜米特鲁在提案中并不认为断块自西向东旋转程度和断裂复杂程度有所增加。他们还发现了证据表明，这一断层从东向西向相对较大和稳定的内华达山脉地壳块体延伸。然而，内华达山脉区块被侵蚀的时机和机制并不为人所知。这项研究将使用裂变径迹数据和详细的填图来确定断层滑动折返的时间和强度，并帮助约束地壳内的前伸展和同伸展温度和地温梯度。这项研究的结果将解决地壳如何延伸以及地壳的温度或热结构在多大程度上控制断层或其位移的分布这一根本问题。

9725371 Miller The basin and range province of western North America, is produced by major coastal extension in which generally E-dipping historic faulting rotates crustal blocks with a top to the west reuse of motion. Miller and Dumitru in the proposal not that there is an increase in fault block rotation and in faulting complexity from west to east. They have also found evidence that this faulting youngs from east to west toward the relatively large and stable Sierra Nevada crustal block. However, the timing and mechanisms by which the Sierra Nevada block is being eroded is not well known. This study will use fission track data and detailed mapping to determine the timing and magnitude of exhumation by fault slip, and to help constrain pre-and syn-extensional temperatures and geothermal gradients within the crust. The results of this study will address the fundamental question of how crust extends and to what extent temperature or thermal structure of the crust controls the distribution of faults or their displacements.