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通过对资阳地区震旦系地层中溶孔、溶缝、溶洞充填矿物序列、白云石的矿物学特征及沉积地球化学特征等的详细分析，认为有两种类型的充填白云石存在：一种是与淡水作用有关的“纤状”白云石（构成葡萄状花边）及粉—细晶白云石，具有低Ｆｅ２＋，低Ｍｎ２＋，低Ｓｒ２＋，δ１３Ｃ在０‰值附近，δ１８Ｏ偏负值；另一种与埋藏作用有关的异形白云石，它包括叶片状白云石和乳白色粗晶白云石，具有高Ｆｅ２＋，高Ｍｎ２＋，高Ｓｒ２＋，δ１３Ｃ偏负，δ１８Ｏ为较大负值。它们的形成分别与准同生期、风化期的充填作用及埋藏期的充填作用有关。根据这些特征并结合区域构造史、盆地演化史等方面的资料得出：该区震旦系地层遭受过风化壳岩溶作用和埋藏岩溶（或溶蚀）作用。这一结论对天然气储层的研究具有重要意义。
Through the detailed analysis of the dissolved pores, dissolved seams, karst cave filling minerals, dolomite mineralogical characteristics and sedimentary geochemical characteristics in the Sinian strata in the Ziyang area, it is considered that there are two types of filling dolomite: one is The “friable” dolomite (which forms the grape-like lace) and the fine-grained dolomite related to freshwater have negative δ18O values near 0 ‰ and low Fe2 +, low Mn2 +, low Sr2 + and low δ13C. The albite dolomite, which is related to burial effect, includes leaf dolomite and milky coarse dolomite with high Fe2 +, Mn2 +, Sr2 +, δ13C and negative δ18O. Their formation is related to quasi-syngenetic, filling during weathering and filling during burial. According to these characteristics and combined with regional tectonic history and basin evolution history data, it is concluded that the Sinian strata in this area suffered weathering crust karstification and buried karstification (or dissolution). This conclusion is of great significance for the study of natural gas reservoirs.