摘要
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。
According to the study of the two sections of the Ordovician in the north of Anhui,China, karst-rocks of three kinds of karst have certain variation regulars in their sections,namely, present corresponding the models of karst facies. From above to below, depositional karst-rocks are dolomite (limestone) karst breccioia, leopard fur limestones or dolostones and gypsum-model poredolostones or limestones; weathering crust karst-rocks arecorroded-filled rocks, level cavity sedimentary rocks and gypsum dissolution breccia; burialkarst-rocks are pore-hole dolostones and replacement-sediment rocks, which form doubledeck structure.
基金
煤炭科学基金!96地10708
关键词
古岩溶
岩溶岩
岩溶相
奥陶系
岩石特征
paleokarst
karst-rock
karst facies
model
Ordovician
North of Anhui
