TYPICAL LANDFORM PHENOMENA AND TRENCH EXPLORATION ANALYSIS OF DANGHENANSHAN FAULT IN SUBEI REGION
Through the field geological and geomorphological survey and trench excavation of the Danghe nanshan fault,it is found that multi-level fault scarps are developed along the north side of the fault,and the latest scarps break the floodplain of the gully,while the west section of the fault is accompanied by fold activity;The geological exploration trench excavated at the mouth of Dahonggou gully shows that the fault has dislocated a relatively new gravel layer.The sample test results show that the latest active age of the fault is at least the middle Holocene;Two trenches revealed the same seismic event,which occurred after(4.69±0.40)ka BP.
Su Bei areaDanghenanshan faultFault scarpMid-Holocene
万方数据
维普
