开鲁盆地茫汉断陷构造形变分析及演化研究

hrough computer combined balanced cross-section with new geologic mode of thinking, Manghan fault depression of Kailu Basin tectonic feature is dynamicly simulated and it’s structural evolutionary history is recovered. The result shows that Manghan fault depression experienced extremely tectonic evolution before Quantou formation of lower Cretaceous, structural formation is complicated and is dominated by fault. Three the structural evolution stages, such as fault stage, transition stage of fault-sag, sag stage. According to conservation laws of energy of the balanced cross-section, the quantity of tectonic deformation of Manghan fault depression in all stratas sediments time is calculated. The results of the calculation show that tectonic deformation of Manghan fault is characterized of NNE direction is greater than NNW’s in general.