Based on the detailed sedimentologic investigations and refined strata division and correlation, the Permian strata from Longlinian stage to Changxing stage are divided into two incomplete super sequences and 12 third-order sequences, and the sequences are correlated. Taking the super-sequence system tract as the mapping unit, the sequence-lithofacies paleogeography map of each stage in Permian is compiled systematically and the evolutionary features of the paleogeography are discussed. The authors think that the compensation sediments in the platform-basin are good source rocks and the high energy shoal inside the carbonate platform and the high energy reef-bank associations on the platform margin are favorable reservoir facies belts.
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