Based on our research, Qinjiatun fracture was composed by two right-lateral fractures, and formed in early Huoshiling period which controlled sedimentary thickness of the Huoshiling formation. While Qindong fracture formed relatively later,the major active stage is Denglouku- early Quantou period, which cut the early formed two right-lateral Qinjiatun fault, Qindong fault is a typical strike-slip fault. Qinjiatun fault and Qindong fault played a decisive role for the hydrocarbon migration and accumulation in this region.
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