【摘要】 鄂尔多斯盆地古岩溶主要发育在奥陶系马家沟组碳酸盐岩地层中,盆地东南部古岩溶普遍发育。根据马家沟组碳酸盐岩地层残余厚度,古岩溶地貌划分为岩溶台地、岩溶斜坡和岩溶盆地3种类型。据据岩心观察和薄片鉴定、岩心分析,岩溶斜坡孔隙裂缝发育,并有着良好的油气显示。更多还原

【Abstract】 The paleokarst mainly develops in the carbonate rocks of Ordovician Majiagou fermation in Ordos basin. The paleokarst develops well in southeastern the Ordos Basin. Based on the residual thickness of the Majiagou formation,the karst land forms are classified into three types,which are karst platform,ancient karst slopes and ancient karst basin. In accordance with the the observation of the cores,identification of the thin sections,and core analysis,the ancient karst slopes,where pores and fractures developed well,have good prospects of gas.更多还原