Because of facies difference,black carbonaceous shale and fine-grained siliciclastic sequences at the lower part of the Cambrian exhibit various changes in southern Anhui and western Zhejiang areas.

• 皖南和浙西地区寒武系下部黑色岩系地层发育差异明显,常见的岩石地层单位为黄柏岭组和荷塘组。