Based on the comprehensive research of field profiles, well cores, drilling logs and regional seismic sections, analyzed the features and evolution, deduced the geodynamical mode of Sichuan Basin, we compiled 6 lithofacies and paleogeography maps, from Qixia Period up to Maokou Period of Sichuan Basin, segment as a unit. According to the research, Sichuan Basin was a sedimentary platform of carbonatite, sloped from southwest to northeast, developed restricted platform facies, open platform facies and shelf facies, during the Middle Permian. Paleo-environment evolution has evidential succession and periodicity, due to the effects by the Emei mantle plume and sea level eustacy. Early Qixia Period was basically occupied by open platform, deep-water shelf developed along the Huaying Mountain-Yunyang and Anbian-Yibin-Yingchang ribbon, and bio-clastic shoal had fully developed due to the marine regression and shelf exposed during the Late Qixia Period. Platform-margin shoal had massively developed around the high ground of deep-water shelf and along the Pengzhou-Jiangyou-Guangyuan ribbon. The extension fracture zone forced by the Emei mantle plume uplifting, and the global marine transgression are the major events in the Early Maokou Period: the main period of platform-shelf fractionation, developed multiple deep-water shelfs. Then the mantle plume kept lifting fast, caused the sole fault, marine regression, and early shelf exposed. Middle-Late Maokou Period was the prime period of carbonate shoal facies reservoir development：the primary exploration target of Middle Permian of Sichuan Basin.
$author.xingMing_EN. Lithofacies and paleogeographic characteristics of Middle Permian Qixia and Maokou Periods in Sichuan Basin and the geodynamic mecheanism[J]. Chinese Journal of Geology, 2019, 54(4): 1114-1134.