Abstract:

North foot fault of Wutai Mountains,south margin fault of Lingqiu basin and Paifang fault array each other by run-in NEE orientation in Shanxi faultdepression zone. We study the Neotectonic behaviors, motion patterns and the active difference of segments of the fault according to geomorphologic principle, method of the geologic structure and satellite photograph explanation. The results preliminarily show: (1)The three faults are all Late Quaternary fault with rightstriking smoothing;(2) From the core to outside of the Shanxi basin,the activities of the north foot fault of Wutai mountains,the south margin fault of Lingqiu basin and Paifang fault were weakenning in the same era;(3)The activities of the three faults show characteristics of segmentation, the activity of the middle segment is the strongest since Late Pleistocene,activities in  the east segment are stronger than those of the west segment. These results imply the complexity and association of the activity of different structures under the same area tectonic background. 

Key words: Shanxi fault-depression zone, neotectonic movement, segmentation