RECONSIDER THE SUSONG GROUP
Hou Mingjing;Tang Jiafu;Gao Tianshan; Jing Yanren(Regional Geological survey of Anhui)
This paper disintegrates the original Susong Group into the Puhe gneiss suite and Susong rockgroup on the basis of thorough study and analysis of it. The Susong rock group is redivided into the Gan-tianao Formation(new),Liuping formation,Daxinwu Formation and Zhishuwu Formation (new)of struc-tural strata series from bottom upwards.The group shows a non-discordant contact withthe original DabieGroup in the southern part and a transition in the northern. It is further proved belonging to the Sinian fromsporopolien association,strata order,etc. All these provide a new geological basis for reconsidering the for-mation and evolution of the Dabie metamorphic orogen and high-Pbelt’s exhumational mechanism.