The well-developed rimmed textures indicate that the dolostones in the study area resulted from the diagenetic replacement of limestones by mixed meteoric-marine pore fluids.

• 广泛发育的白云石环边结构等淡水成因标志表明，该区白云岩是通过大气水－海水孔隙混合流体交代灰岩所形成的。