构造地貌特征、地震震源机制解和GPS观测资料显示，位于青藏高原中部的羌塘地块有别与高原其它地块，具有独特的构造变形特征，存在着EW向伸展和物质向南东的大规模挤出逃逸。但由于该地区海拔高，工作条件艰苦，因此研究程度较低，存在大片研究空区。这严重制约了我们对青藏高原大陆碰撞变形模式、高原新生代隆升扩展过程及其资源、能源、环境、地质灾害效应认识。本申请以羌塘地块内SN向正断层和共轭走滑断裂为研究对象，通过高精度卫星影像遥感解译和详细的野外调查，查明羌塘地块内活动断裂的分布，确定活动断裂的几何学特征、运动学性质及不同断裂间的构造组合特征。结合对该地区断裂起始活动时代、累计位错量、晚第四纪滑动速率和古地震等方面的研究，探讨羌塘地块独特的构造动力学背景，完善青藏高原大陆碰撞变形模型。

Tectonic geomorphology, focal mechanism solutions, and GPS data indicate that the Qiangtang block, which is located in the central Tibetan Plateau, has its unique tectonic deformation patter compared to other blocks in the Plateau. The Qiangtang block is undergoing EW extension and large-scale southeastward extrusion. However, due to the high altitude, inaccessibility, and awful working conditions, geological research level is still quite low in this area, with vast research gaps in the inner Qiangtang. This limited our knowledge about the continental collision deformation mode and the uplift process of the Tibetan Plateau, and then hampered our understanding on the resources, environment, and geological hazard effects of the Plateau growth. This new application will study the SN trending normal faults and the conjugate strike-slip faults in the Qiangtang block, by interpretation of satellite images and detailed field investigation. Our first goal is to identify the distribution of active faults within the Qiangtang block, and then determine the geometry, kinematics, and tectonic combinations of these active faults. Combining our studies on the onset ages, cumulative displacements, late Quaternary slip rates, and paleo-earthquakes of the active faults, we will discuss the unique geodynamic background of the Qiangtang block, and improve the continental collision deformation model of the Tibetan Plateau.