Reconstruction and petroleum geological significance of lithofacies paleogeography and paleokarst geomorphology of the Middle Permian Maokou Formation in northwestern Sichuan Basin, SW China

ZHONG Yuan,YANG Yueming,WEN Long,LUO Bing,XIAO Di,LI Minglong,CHEN Cong,ZHAO Like,LU Feifan,TAN Xiucheng

Fig. 1. The location of the study area (a) and the stratigraphic column (b). Old—stratigraphic division in previous research; New— stratigraphic division in this study.