论文部分内容阅读
皖北两个奥陶纪剖面岩溶岩的宏微观特征的详细研究表明，三种类型古岩溶的岩溶岩在剖面上均呈现出一定的组合变化规律，即表现出相应的岩溶相模式：沉积岩溶自上而下为角砾状云岩、豹斑状（灰）岩及膏模孔云（灰）岩组成的三段式结构；风化壳岩溶自上而下为溶蚀填积岩、水平洞穴沉积岩及膏溶角砾岩组成的三段式结构；埋藏岩溶为孔洞状云岩和交代淀积岩组成的双带结构。
A detailed study of the macro-micro features of two Ordovician sections of karst in northern Anhui shows that the karst rocks of the three types of paleokarst show a pattern of combination changes in the sections, ie, corresponding karst facies patterns are present: sedimentary karstification From top to bottom, it is a three-stage structure consisting of brecciated dolomite, leopard spotted gray (gray) rock and oval pore cloud (gray) rock. The weathering crust karst is composed of erosional-filled rocks, horizontal cave sedimentary rocks and Gypsum-dissolving breccias; the burial karst is a double-belt structure composed of pore-type dolomite and metasomatic sedimentary rocks.