The mudstone reservoir was formed in lacustrine facies of lamellar marl in the deepwater or semi-deep water sediment with tensional state.
泥质岩储集层形成于呈拉伸状态的深湖半深湖相纹层状泥灰岩之中。
2
Yeyungou Formation mainly developed carbonate slope facies, deepwater basin facies and a little carbonate open platform 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。
3
The Miaohe-type biotas occur in the black shale and siliceous shale in the transitional areas from the late open platform facies to deep-water shelf-bathyal facies.