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湖北随州薛家店灯影组为一套斜坡盆地相碳酸盐岩沉积。该区白云岩极为发育，白云岩中白云石晶粒细小、晶形差；白云岩横向分布稳定，并且水平纹层发育。碳氧同位素和包裹体分析表明，该区古盐度值随水体深度增加而逐渐变低。白云岩为准同生期白云石化产物，其Ｍｇ２＋来源与顺斜坡向下流动的高盐度卤水流的活动有关，据此归纳出该区白云石化作用的模式
Xuejiadian Dengue Shade, Suizhou, Hubei Province, is a suite of sedimentary facies carbonate rocks in the slope basin. The dolostones in this area are extremely developed. The dolomite in the dolomite is small in grain size and crystalline form. The dolomite is stable in lateral distribution and horizontal lamina are developed. The analysis of carbon and oxygen isotopes and inclusions shows that the paleosalinity value of this area gradually decreases with the increase of water depth. The dolomite is the dolomitized quasi-contemporaneous dolomite product whose Mg2 + source is related to the activity of the high-salinity brine flowing down the slope. Based on this, the model of dolomitization is summarized