Songliao basin is a superposed basin composed of fault-subsidence and depression.

松辽盆地属断、坳叠置型盆地。

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Kaping Jianhe region situated in the boundaries of Tangshan City is a basin superposed by Paleozoic, Mesozoic and Cenozoic sediments.

开平涧河地区位于河北省唐山市境内，是一个由古生界、中生界及新生界叠合而成的构造盆地。

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Oil and gas in the basin migrated laterally along T1, T2 interfaces and reservoirs. Verious kinds of traps superposed on paleo-uplifts and paleoslopes are more favourable to form oil and gas pools.

油气主要以T1，T2界面和储层的侧向运移为主导，叠置在古隆起、古斜坡之上的各类圈闭是最有利的圈闭，成藏效率高。

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