Middle-Late Carboniferous epoch carbonate microfacies of the Qilinshan section in Chaohu

The Qilinshan section, in Chaohu, Anhui Province, is an ideal section for the study of the Middle Late Carboniferous carbonate rock because of the near perfect occurrence and fascinating sedimentary formation. In this paper, microfacies analysis is used,the microfacies characters of the carbonate rock,such as the biotic assemblage,grain composition,the type and texture of the matrix,have been deeply studied.The Middle Late Carboniferous carbonate rock of the studied section can mainly be divided into seven microfacies types and the sedimentation belongs to the neritic carbonate plat facies zone.