湖北北部耀岭河群、武当山群、随县群(大狼山群)之我见

川、陕、豫、鄂边境和湖北武当山地区的耀岭河群—武当群，鄂北随州—应山地区的随县群（大狼山群），大别山西南麓孝感和黄冈地区长江北岸的原红安群上部地层实为同一地层。原耀岭河群是一套变基性火山岩，它岩性单一，厚度不大，应废群复组。其下为一套变质（含砾）含晶屑岩屑酸性火山岩，命名为柳林组。再下是一套变质碎屑沉积岩、火山质沉积岩，命名为天星庙组。耀岭河组在鄂东、鄂中缺失；柳林组、天星庙组横贯东西。建议三组统称武当山群。武当山群上覆有含化石的古生界和上震旦统碳酸盐岩地层，其间没有角度不整合界线；之下未见底，时代为早震旦世

Remarks on the Yaolinhe, Wudangshan, Suixian (Dalangshan) Groups in Northern Hubei

The Yaolinghe and Wudang Groups at the border between Sichuan,Shaanxi,Henan and Hubei,and in the Wudangshan area of Hubei,the Suixian(Dalangshan) Group in the Suixian Yinshan area of Northern Hubei,and in the original upper“Hong'an Group”in the Xiaogan area,southwest of the Dabieshan Mt.and on the north bank of the Yangtze River of the Huanggan area are essentially the same strata.The original“Yaolinghe Group”is a suite of metabasic volcanic rocks,simple in lithology and small in thickness,and should be reduced to a Formation.Under it is a suite of metamorphic rudaceous and crystal acidic volcanic rocks,the Liulin Formation.Under it is a suite of metaclastic sedimentary rocks and volcanic sedimentary rocks,the Tianxingmiao Formation.The Yaolinghe Formation is missing in Eastern and Central Hubei.The Liuling and Tianxingmiao Formations are distributed from east to west.It is suggested that the above three Formations be unitedly named Wudangshan Group.The Wudangshan Group is overlaid by fossiliferous carbonate strata of the Paleozoic and late Sinian age,and no angular unconformity is seen in between.Its base is not seen,and its age is Early Sinian.