滨北地区浅层断裂特征、形成机制及其对圈闭的控制作用

Shallow Layer Fracture Features, Developing Mechanism and Its Effect on Traps in Binbei Region

总结了滨北地区沉积层内的断裂在平面和纵向上的分布、发育规律；计算了同沉积断层的生长指数；分析了逆断层的活动分布特征．通过对区域地震剖面的解释分析与对比，结合其它地质资料，研究了该区的断裂构造发育史，提出了滨北地区浅层构造演化模式：（１）泉二段以前的ＮＷＳＥ向的水平挤压作用；（２）泉三段一青二、三段的ＮＥＳＷ向的水平拉张作用；（３）嫩江组末期的南北向的左旋剪切作用．

We summed up fault characteristics of both the plane and the section, which devoloped at sedimentary rocks in Binbei region in Songliao Basin and calculated the indexes of the growth faults, analysing the distrbution and acting features of the thrust faults. According to the interpreting, analysing and contrasting of area seismic sections and other geological data, we have studied this area's tectonic developing history and put forward the tetonic evaluating model:(1)NW SE striking horizonal compression before the second segment of Quantou Formation accumulating;(2)NE SW striking horizonal extention during the third segment of Quantou Formation to the second and third segment of Qingshankou Formation accumulating. The structures which invered from normal faults to thrust are favorable entrapments of this region.