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.

庙河型生物群的产出位于晚期开阔台地向深水陆棚-次深海过渡相区中的黑色页岩、硅质页岩中，其沉积环境为最大浪基面以下的宁静、贫氧环境，其沉积方式为悬浮沉积。

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The bathyal - abyssal facies , littoral facies , neritic facies and delta facies are beneficial to and gas exploration.

半深海- 深海相区、 滨浅海相区和三角洲相区是较为有利的油气分布区。

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