Distribution characteristics and sedimentary model of gypsum-bearing evaporite of the Middle Cambrian Gaotai Formation in the eastern Sichuan Basin

Gypsum-bearing evaporite is a globally important oil and gas caprock. Sealing of oil and gas reservoirs by gypsum-bearing evaporite is of great importance for oil and gas storage, particularly for natural gas. During the Middle Cambrian, the Gaotaii Formation, gypsum-bearing evaporite was deposited in the eastern Sichuan Basin, which is a key caprock for deep oil and gas resources. Yet little research exists on the gypsum-bearing evaporite of …