龙门山断裂带构造活动历史的研究基本来自低温热年代学方法对断裂带两侧上下盘或周边地质体的测定，间接的反映断裂带的活动时间，缺乏直接限定的方法和证据。汶川地震同震地表破裂带（映秀-北川断裂和灌县-安县断裂）和科学钻探1号孔（WFSD-1，映秀-北川断裂）岩芯中出现了大量的断层泥，部分厚度巨大。这些断层泥是脆性断裂活动的直接产物，记录了断裂活动的时间、方式和热历史等信息，为研究龙门山断裂活动和地震历史提供了全新的视角。本研究拟通过粘土矿物粒度分级40Ar/39Ar定年技术并结合详细的构造分析，对汶川地震同震地表破裂带（映秀-北川断裂和灌县-安县断裂）和WFSD-1岩芯（映秀-北川断裂）中出现的断层泥进行系统的定年，得到的结果将有效制约龙门山主干断裂带的构造和地震活动历史。此外，结合地表和深部断层泥的热年代学分析还将为青藏高原东缘龙门山的隆升历史提供年代证据，从不同角度认识青藏高原东缘的形成过程。

Understanding the uplift history of east Tibet highly relies on the indirect results obtained via low-temperature thermochronology, because of lacking of direct dating method and objects. Fault gouges are rich in Wenchuan co-seismic surface ruptures (Yingxiu-Beichuan fault and Guanxian-Anxian fault) and Wenchuan earthquake Fault Scientific Drilling (WFSD-1, Yingxiu-Beichuan fault) cores, some of which are very thick. Different from indirect study object, these fault gouges are direct products of brittle faulting, in which the activity timing, mode and thermal history are recorded, providing new objectives allowing study of the brittle faulting of Longmen Shan. This project intend to date the fault gouges from Wenchuan co-seismic surface ruptures (Yingxiu-Beichuan fault and Guanxian-Anxian fault) and WFSD-1 cores (Yingxiu-Beichuan fault) via 40Ar/39Ar thermochronological technique of clay end member and structure analysis. The results will constrain the tectonic and earthquake activity history. Moreover, based on the fault gouges thermochronological analysis both from surface outcrops and drilling cores, we also intend to provide additional constraints for the uplift history of the east margin of Tibet, recognize the uplift process from a new perspective.