Based on authers' field investigations, using geological methods, in the paper we have mainly discussed the fault-scarp features and displacement features in eastern Changma fault zone, some paleoseismic evidences along the fault zone, including the faults formed in Holncene Epoch, ancient slump, drumlin and fault cliff and coarsely ascertained the displacement rates of the NEE fault, the age of the fault-scarps and earthquake recurrence intervals along the faul zone. The studied results show that the active properties of the NEE fault have transformed themselves from extrusion, into left-lateral shear-tension Since Holocene Epoch and the left-lateral shear-tension activity of the fault did form the fault-scarps. An earthquake (Ms=7.5) probably once occurred along Changma fault zone about A.D.104. The recurrence intervals for magnitude 7-7 (1)/(2) earthquake are 2620 years when creep rate is considered, and 1500 years when creep rate is not considered. The strike displacement rate of the fault is 4.5mm/Yr during 12760 years, and 6.5mm/yr during 1880 years. A ratio of strike displacement to the dip is 4.7.
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侯珍清,王华林,康来迅.昌马断裂东段断层年龄的确定和大震复发周期的估计[J].地震工程学报,1986,8(1):100-106. Hou Zhenqing, Wang Hualin, Kang Laixun. AGE OF FAULT-SCARPS AND EARTHQUAKE RECURRENCE INTERVALS ON CHANGMA FAULT[J]. China Earthquake Engineering Journal,1986,8(1):100-106.