沉积相经历了从盆地相、台地相到蒸发岩相的演化过程。
Sedimentary facies have experienced the evolutionary stages from the basin facies through platform facies to evaporite facies.
野云沟组主要为斜坡相和盆地相沉积，少量为碳酸盐台地相沉积。
Yeyungou Formation mainly developed carbonate slope facies, deep water basin facies and a little carbonate open platform facies.
上三叠统在南、北坳陷为次深海盆地相沉积，发育一套黑色页岩烃源层；
The Upper Triassic Formation is sub-abysmal basinal facies deposit in the south and north depressions. A black shale layer developed.
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