中条山早元古代花岗岩类岩体地球化学特征,成因及构造意义

本文介绍的横岭关、北峪、永济、野庙滩、太峪和烟庄岩体是中条山古裂谷中的早元古代花岗岩类岩体。就其成因类型而言，永济岩体是Ｉ型花岗岩类岩体，而横岭关、北峪、野庙滩、太峪和烟庄岩体属Ｓ型花岗岩类岩体。就其形成构造环境而言，永济、横岭关和北峪岩体均是陆缘裂谷Ａ型俯冲碰撞的产物，其中，永济和横岭关岩体还构成大陆边缘“成对”（Ｉ型和Ｓ型）花岗岩；而烟庄、野庙滩和太峪岩体是在陆缘裂谷Ａ型俯冲碰撞形成的内硅铝造

Geochemical Characteristics, Genesis and Structure Significance of Early Proterozoic Granide Rock Mass in Zhongtiao Mountain

The rock masses of HengLingguan, Beiyu, Yongji, Yiemiaotan, Taiyu and Yianzhuan are early proterozoic granide rock masses which are located in the paleo rift of Zhongtiao Mountain. The Yongji rock mass is a I type of granite and the rock masses of Henglingguan, Beiyu, Yiemiaotan, Taiyu and Yianzhuan are S type of granites insofar as their genesis types be concerned. Took account of their forming tectonic environment, the rock masses of Yongji, Henglingguan and Beiyu result from A type of subduction and collision of continental margin rift, the rock masses of Yongji and Henglingguan are made into paired granite (I type and S type) of continental margin. But rock masses of Yianzhuan, Yiemiaotian and Taiyu result from structure empalcement during the relative relaxation stage of crust after inner silicon and aluminum orogen formed from the A type of subduction and collision of continental margin rift.