江西上饶以南的上饶组

<正> 江西上饶以南铅山、广丰等地二叠纪煤系地层时代的讨论多年来一直为地质工作者所关注。1963年赣东北地质队在铅山新安埠一带“乐平煤系”底部的黑色页岩中采获Mexicoceras等茅口期头足类,将这一层位名为“湖塘组”,划归下二叠统。此后,不断地在煤系更高的层位,如“彭家段”的中、上部,“童家段”的下、中部,相继发现了早二叠世菊石和鲍,从而将本区上、下二叠统的界线逐步上延。李文恒(1975,1979)、李文恒、田宝霖和

The Shangrao Formation in the area to the south of Shangrao, Jiangxi

The Shangrao Formation as a lithostratigraphic unit, has been established in this paper for the rocks between the Upper Permian Wulinshan Formation and the Lower Permian Chihsia Formation. It consists of a suit of coal-bearing deposits in the transitional environment beside the "Cathayan Land" in Southeast China, and is characterized by the Shouchangocears Fauna in its argillaceous intercalations. It is believed that chronologically this formation is approximately equivalent to the Maokou Formation according to the existence of the representatives of the Neoschwagcrina Fauna in both of them. The Shangrao Formation is further subdivided ascendingly into four members, the Hutang, the Raojia, the Penjia and the Tongjia. The correlation between this formation and those of the neighbouring regions is shown in table Ⅱ.