摘要
Lintong-Chang’an fault is an important active fault near Xi’an City. In this paper, the activity of the fault is discussed by using high-resolution shallow seismic reflection, composite drilling and dating methods. The result shows that some layers in Quaternary were offseted and the dislocated distances decrease from deep layer to upper one,means a continual longtime active of the fault.The geological sections of composite drilling shows that sand and clay layers of Middle Plaistocene were cut and the displacements are in 8.7~2.5 m. All of this prove that active rate of the fault decreased from Early to Late Pleistocene Epoch.