长春岭地区断裂特征及演化

长春岭地区断裂的形成具有明显的分期特征,通过构造精细解释识别出以北东向为主,南北向为辅的7组断裂密集带。垂向上发育下部、上部、长期继承性3套断裂系统;在以往的资料成果和平衡剖面技术的基础上,分析得出长春岭地区断裂的形成演化先后经历了火石岭组～营城组时期的伸展变形,登娄库组～嫩江组时期整体拉张变形,四方台组～古第三系时期反转构造变形,将长春岭地区断裂演化分为3个时期。

Fracture Features and Evolution of Changchunling Area

The formation of fracture in Changchunling area has obvious characters of substage,Fine structural interpretation has recognized seven fracture zones which are mostly in NE,and SN,Vertically there had developed 3 fracture systems which are lower-part,upper-part and Long-time inherited fracture systems;Based on the previous results and the method of the balanced cross section,The result of study shows that the formation and evolution of the fracture of Changchunling area experienced the extended deformation of Huoshiling to Yingcheng group,the extensional deformation of Denglouku to Nenjiang group and the reverse deformation of Sifangtai to Gudisanxi group,the evolution of the fracture of Changchunling area could be divided into 3 main periods.