摘要：By observing the cores o f more than 30 wells in the Gaoyou Sag o f the Subei Basin, storm deposits were found in the Dainan Formation in the study area, and a variety o f typical storm sedimentary structures and lithofacies were identified, such as scouring surfaces, canals, mounds, staggered layering, block layering, and parallel layering. By summarizing and analyzing the existing data and drawing on the experience o f previous generations, the storm rocks are divided into 8 types: type I, type H, type type IV,typ e V，typ e V I，typeV II,an dtypeV IILT heeffects o f water depth, storm intensity, lake level change and regional tectonic movement on storm deposition are discussed. The discovery o f storm rocks in Gaoyou Sag is o f great significance to paleo-water depth, sedimentary environment, and o il and gas minerals.
