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青龙河花岗岩 绿岩带形成于新太古代晚期 ,形成环境为古岛弧环境 ,绿岩地体由双山子群、朱杖子群组成。区内褶皱构造、韧性剪切变形带及脆性断裂带十分发育。绿岩地体的形成时间为 2 6 50～ 2 750Ma。花岗质岩石即“TTG”岩系安子岭片麻岩套 ,由四个深成侵入体组成 ,其中柳各庄片麻岩单元直接侵入双山子群鲁杖子组。柳各庄片麻岩多件锆石U Pb一致线年龄数据在 2 510～ 2 550Ma之间。
Qinglonghe granite greenstone belt was formed in the late Neo-Archean, forming an ancient island arc environment. The greenstone body is composed of Shuangshanzi Group and Zhuzhangzi Group. Regional fold structure, ductile shear deformation zone and brittle fracture zone are well developed. Greenstone formation time is 2650 ~ 2750Ma. The granitic rocks, that is, the “TTG” series of Anziling gneiss sets, are composed of four deep-penetrated intrusions, in which the units of the Ligezhuang gneiss directly intrude into the Zhizhizi Formation of Shuangshanzi Group. The data of zircon Pb-Pb coincidence line of a few pieces of gneiss in Liugezhuang are between 2 510 ~ 2 550Ma.