Traditional standpoint is that upper Es2 submember was reserved and lower Es2 submember were lost in Zhanhua Area.

传统观点认为，沾化地区沙二段应为沙二上亚段，全区缺失沙二下亚段。

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Traditional standpoint is that upper Es2 submember was reserved and lower Es2 submember were lost in Zhanhua Area.

传统观点认为，沾化地区沙二段应为沙二上亚段，全区缺失沙二下亚段。

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