Late Cenozoic and Active Uplift of a Restraining Bend along a Continental Transform -- the Dead Sea Fault in Lebanon

黎巴嫩约束弯曲（LRB）构成了死海左侧断裂系统（DSFS）的一个200 km长的区段，因此，它代表了该大陆转换系统的一个重要部分。尽管构造突出的DSFS，北方500公里的板块边界（包括LRB），直到过去的十年，是相对较少的领域为基础的，新构造研究的主题。几乎所有以前的研究，包括PI的研究，都集中在该地区的走滑构造;然而，隆起是新构造图片的重要组成部分。要解决的关键科学问题包括黎巴嫩山脉发生了多少次不同的隆起事件，以及这些事件如何与DSFS沿着不同构造事件的时间相对应？这可以帮助解决非洲-阿拉伯板块边界是否随着时间的推移而迁移的问题。其他问题涉及现在和过去隆起的空间分布，以及继承的晶体结构（例如，中生代Palmyride裂谷系统或新特提斯被动边缘）对LRB运动学的影响。这项拟议的工作将评估记录晚新生代和LRB活动的可行性。

ABSTRACTThe Lebanese Restraining Bend (LRB) constitutes a 200-km long section of the left lateral Dead Sea fault system (DSFS), and, hence, represents a significant segment of thiscontinental transforms system. Despite the tectonic prominence of the DSFS, the northern 500 km of this plate boundary (including the LRB) have, until the past decade, been the subject of relatively few field-based, neotectonic studies. Almost all previous studies, including research by the PI, have focused on the strike-slip tectonics of the region; yet, the uplift is a significant component of the neotectonic picture.Key scientific questions to be addressed include how many distinct episodes of uplifthave occurred in the Lebanese mountains, and how do these correspond with the timing of different tectonic episodes along the DSFS? This can help address the question of whether the African-Arabian plate boundary has migrated over time. Other issues pertain to the spatial distribution of present and past uplift, as well as the possible influence of inherited crystal structures (e.g., the Mesozoic Palmyride rift system or the Neo-Tethyan passive margin) on the kinematics of the LRB.This proposed work would assess the feasibility of documenting Late Cenozoic and activeuplift of the LRB.