关于“豹皮灰岩”的成因

襄汾县浪泉乡中奥陶统马家沟组灰岩中豹皮灰岩的豹斑是虫孔内的碳酸盐物质在成岩期经白云岩化作用而成,在碳酸盐沉积物的形成和改造过程中,生物起了巨大作用。豹斑的整体形状保留了遗迹化石的形态。

ON THE ORIGIN OF THE BAOPI LIMFSTONE

This article tells the characteristics of the entire shapes of the leopard mottles for the baopi limestone in Najiagou formation Middle Ordovician. The viewpoint of borrow origin is presented, the leopard mottles is formed by dolomitisation of the material in borrows in the diagenetic stage. The borrowing organisms played an important role in the formation and transform of carbonate sediment. The entire shapes of the leopard mottles keep the form of the trace fossils. The seven trace fossil species have been determined by professor Yang Shipu, they are Palaeophycus, Trichichnus, Glockeria, Teichichnus, Chondrites, Helminthopsis and Planolites.