永德梯子坡剖面丁家寨组发现早二叠世牙形石

THE DISCOBERY OF EARLY PERMIAEN CONODONT IN DINGJIAZHAI FORMATION OF TIZIPO SECTION,YONGDE

测制永德县梯子坡剖面时,首次于丁家寨组顶部灰色亮晶生物碎屑灰岩层中发现丰富的早二叠世牙形石。根据牙形石组合,提出丁家寨组上部(至少顶部)存在下二叠统沉积。

A lot of early Permian conodonts have been first d is covered in the grey sparry bioclastic limestone in the top of Dingjiaxhai Format ion.According to the conodont assemblage,there is lower Permian sediment in the upper Dingjianzhai Formation (at least in its top).