Research and Application of D-T Method on Determinating Activity of Buried Faults in Quaternary Basins
Zhu Jin-fang · Northwestern Seismological Journal · 2012
Based on drilling exploration cross faults,this paper presents Depth-Time(D-T) analysis method for compositing drilling section exploration.The method designs D-T graph(depth as Y axis,time of sediment as X axis),analyzes the defference of sedimentation speed in both sides of fault,determines the activity time and displacement of fault.The method is applied in works of urban fault exploration in Fuzhou basin and Quanzhou basin,and brings good results.At last,the influence factors to the method are analyzed,and it is considered the key factor is flatness of terrain(ancient terrain) of the drilling site.