Collaborative Research: Quanternary Evolution of the Eastern California Shear Zone Between Latitudes 36o and 39o

最近的地质和大地测量数据表明，一个被称为东加利福尼亚剪切带的右侧剪切带已经存在了很长时间，并且仍然活跃。然而，在剪切带内，关于哪条线是活动的证据相互矛盾——地质数据要求死亡谷-炉溪断裂带是剪切的主要场所，而大地测量数据似乎倾向于欧文斯谷断裂带。在这一悖论的几种可能解释中，该项目将测试剪切轨迹目前正处于从前者向后者转移的过程中的模型。研究结果还有望提高对控制断层相互作用和平行走滑断层与连接正断层之间滑动分配的基本机制的理解。

Recent geologic and geodetic data indicate that a zone, termed the Eastern California shear zone, of right lateral shear has been long-lived and is still active. However, within the shear zone, there is conflicting evidence of which strand is active-geologic data require that the Death Valley-Furnace Creek fault zone is the principal locus of shear, while geodetic data appear to favor the Owens Valley fault. Of the several possible explanations of this paradox, this project will test the model that the locus of shear is currently in the process of shifting from the former to the later. The results are also expected to improve understanding of the fundamental mechanisms that control fault interactions and slip partitioning between parallel strike-slip faults and connecting normal faults.