Daxing fault in Jizhong sag is characterized with segmentation and variations for each segment. The fault

according to its extending trends

can be divided into four segments namely; north segment(NNE trend)

mid-north segment(NE trend)

mid-south segment(near EW trend) and south segment(near NS trend).Each segment has a distinctive difference of its own in fault geometry

associated structures

active age and the sedimentation control etc. Especially

the NE trend segment controls the structural characteristics of the whole Langgu sag. The structural character varies in the hinge area between two segments. As a boundary fault controlling the sag

the evolution of Daxing fault has intrinsic correlations with each segment due to the same effects of extensional stress field in the early Tertiary.