河南鲁山太华群不整合的发现和地层层序厘定

河南鲁山地区太华群铁山岭组与荡泽河组之间存在确凿的不整合和超覆接触关系。以此发现为基础，结合太华群的建造和构造，以及众多年龄资料等，太华群的层序应重新厘定。将原太华群统归为太华超群，以不整合面为界：上部称上太华群，包括雪花沟组、水底沟组和铁山岭组；下部称下太华群，包括荡泽河组和耐庄组。两者均属太古宙。

THE DISCOVERY OF UNCONFORMITY WITHIN THE TAIHUA GROUP AND DEFINITON ITS STRATIGRAPHIC SEQUENCE IN THE LUSHAN AREA,HENAN

There exists an unconformity between the Theshanling Formation and the Tanzehe Forma-tion of the Taihua Group in the Lushan area,Henan,On the basis of the rocks and structures andage data of the Taihua Group,the stratigraphic sequence of the group has been redefined.The o-riginal Taihua Group is all assigned to the Taihua Supergroup.With the unconformity as theboundary,the upper part is called the upper Taihau Group, including the Xuehaugou Formation,Shuidigou Formation and Tieshanling Formation, and the lower part is called the Lower TaihuaGroup ,including the Tangzehe Formation and Naizhuang Formation.