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文章从受组构控制角度总结出鄂尔多斯盆地奥陶系马家沟组存在着４类储渗空间，通过岩石学、地球化学特征的研究，认为与盐膏溶蚀有关的缝孔洞是同生期暴露大气水作用的产物，白云岩中与白云石溶蚀有关的缝孔洞则是同生期大气水与海水混合作用的结果。文章还进一步建立了各类储渗空间的形成演化模式，提出了它们的有利发育区段
From the perspective of structural control, the article concludes that there are four kinds of reservoir space for the Ordovician Majiagou Formation in the Ordos Basin. Based on the petrologic and geochemical characteristics, it is believed that the fracture holes associated with the dissolution of the salt paste are the same-stage exposure The product of the action of atmospheric water and the fractured pores associated with dolomite dissolution in dolomite are the result of the mixing of atmospheric water and seawater during the same period. The article also further established the formation and evolution of various types of storage and storage space evolution model, put forward their favorable development zone