Abstract:

Because of the action of the feather fault belts of Tanlu fault-Tai-zhou strike-slip faults and Zhenwu-Xiao ji strikeslip faults，together with the action of deep subcrustal materials in the basin, the uplift of the mantle and the rising of Mho-plane, the block is caused to slip along Yinzhi erosion surface so as to form both Qintong and Gaoyou pull-apart basins, Along both sides of the strike-slip faults are formed a series of structures, which are good places of oil and gas accumulation.

Key words: Fault belt, Pull-apart basin, Basin evolution