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.
矿化围岩的沉积组合反映其形成于较深海盆地的环境，为裂谷盆地构造背景。
Sedimentation combination of the surrounding rocks suggests that they are formed in deep ocean basin environment, which belongs to rift valley basin.
矿化围岩的沉积组合反映其形成于较深海盆地的环境，为裂谷盆地构造背景。
Sedimentation combination of the surrounding rocks suggests that they are formed in deep ocean basin environment, which belongs to rift valley basin.
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