本文提出了宜昌奥陶系沉积相是台地相—台地边缘相—浅海盆地相的多相台棚式的组合类型，指出奥陶系经历了四次海进到海退的沉积旋回过程。
In this paper, it is suggested that the Ordovician sedimentary facies in the Yichang region are a combination type consisting of platform facies, platform margin facies and shallow sea basin facies.
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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