A REVIEW OF THE PRECAMBRIAN STRATIGRAPHIC DIVISION AND CORRELATION OF EASTERN PARTS OF LIAONING AND JILIN
再论辽东前寒武纪地层的划分和对比——“辽河群”一词使用的商榷

Since the Liaohe Group was named by Saido in 1938, the term has implied the stratigraphic unit between the Anshan Group and Sinian System. The present Liaohe Group is divided into five formations from bottom to top:Langzishan, Lieryu, Gaojiayu, Dashiqiao and Gaixian formations. Consequently come out two key questions: is the boron-bearing rock series in the eastern part of Liaoning over the Langxishan Formation or under it and is the Dashiqiao Formation under the Gaixian Formation or over it? As a result of our study,four groups are contained in the present Liaohe Group, i.e. Kuandian Group, Caohe Group, Dalizi Group and Liaoyang Group.The contact relations between them are unconformable.The two questions mentioned above are reviewed in this paper to explain why the Liaohe Group is improper. According to the demand of "Stratigraphical Guide of China", the term of Liaohe Group should be abandoned.