Abstract: Lintong-Chang'an fault is an important boundary fault controlling Lishan uplift and Xi'an depression in Weihe basin. Previous study thinks that the fault activity has been strong during the Holocene, but this study shows a different result. According to drilling data analysis, river terrace and the field survey, we have studied the activity of Lintong-Chang'an fault, and the result shows that the fault had a big dislocation of lower Pleistocene ago. After that it becomes weaker, and the feature of the faulting movement is expressed as small extensional fractures and displacement.

Key words: Active fault, Weihe basin, Lintong-Chang'an fault