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横切潍北—莱州湾凹陷郯庐断裂带的地震反射剖面和断裂带内的凹陷断层、沉积相和油气特征,直接或间接显示了郯庐断裂带的延伸、运动性质和活动时限。郯庐断裂带在海域和陆上的几何形态及其组合基本一致,根据切过断裂带的剖面和平面上断层的组合特征,判断其为兼具垂直位移的走滑运动断层系。走滑断裂带的活动控制着凹陷内同构造沉积以及构造样式,表明郯庐断裂带的活动时限具分段性,相当于渤海湾盆地孔店组(E_(1-2)k)—沙四段(E_(2-3)s~4)沉积期(古新世—早始新世)—孔店组—沙二段(E_(2-3)s~2)沉积期(古新世—始新世)—孔店组—沙一段(E_(2-3)s~1)(古新世—渐新世)沉积时期,走滑拉分活动由南向北迁移;活动方式也由古新世—早始新世的左旋走滑活动,被早始新世之后的右旋走滑活动所替代。
Transversely the seismic reflection profile of the Tan-Lu fault zone in the Weifang-Laizhouwan Sag and the fault, sedimentary facies and oil-gas features in the fault zone, directly or indirectly show the extension, the nature of movement and the duration of activities of the Tan-Lu fault zone. The geometry and assemblage of the Tan-Lu fault zone in the sea and on the land are basically the same. According to the combination of the fault-cut section and the fault plane, it is concluded that the strike-slip fault system has vertical displacement. The activity of the strike-slip fault zone controls the synsedimentary sediments and tectonic styles in the depression, indicating that the active time-limit of the Tan-Lu fault zone is segmental, equivalent to the Kongdian Formation (E_ (1-2) k) -satay 4 in the Bohai Bay Basin (E_ (2-3) s~4) sedimentary period (Paleocene to early Eocene) - Kongdian Formation - Es2 Member (E_ (2-3) s ~ 2) (E_ (2-3) s ~ 1) (Paleocene to Oligocene) during the sedimentary period of the Kongdian Formation-Shashi Formation (E_ (2-3) s ~ 1) migration from the south to the north; The Lost Slippage activity of the Eocene-Early Eocene was replaced by the dextral slippage activity after the Early Eocene.