Geological Investigation of the Juncture between the Western and Southern Margins of the Tibetan Plateau

青藏高原西缘明显以走滑断裂为主，南缘以逆冲和正断层为主，但这两个系统如何相互作用尚不清楚。这导致了两种截然不同的模式，一种强调造山带-平行走滑断裂，另一种强调西藏地壳沿南缘向南挤压。该项目将研究喀喇昆仑断裂系统和青藏高原西缘与南缘交界处的其他断裂的时间和运动学，以区分可行的模式。这些结果应该澄清走滑断层在控制尼泊尔高喜马拉雅地区西藏南缘的动力学中可能发挥的作用。

0106808MurphyStrike-slip faulting clearly dominates the western margin of the Tibetan plateau, and thrust and normal faulting dominates the southern margin, but how these two systems interact is unclear. This has led to two distinct classes of models, one emphasizing orogen-parallel strike-skip faulting and the other emphasizing southward extrusion of Tibetan crust along the southern margin. This project will examine the timing and kinematics of the Karakoram fault system and other faults in the juncture between the western and southern margins of the Tibetan Plateau in order to discriminate between the viable models. Results should clarify the role that strike-slip faulting may play in controlling the dynamics of the southern margin of Tibet in the High Himalaya of Nepal.