盆地内部断块活动发育，形成北北东向和北北西向两组断裂网络系统，切割改造成47个翘倾块断体和上覆的箕状断陷。
Block faulting activities inside basin develops, forming NE and NW fracture systems, thus cutting this basin into 47 tilted block faulting body and a series of overlying dustpan-like fault depression.
大庆肇州油田州57区块位于松辽盆地北部中央坳陷区三肇凹陷内，为多条断层切割的非均质砂岩油藏。
Zhou57 area in Zhaozhou Oilfield locates in Sanzhao depression of central depression belt in northern Songliao Basin, developing sandstone reservoir truncated by large Numbers of faults.
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