摘要
大营子组是６０年代建立的太古宙建平群中的岩石地层单位，近年１∶５万区调证实，大营子组是由太古宙变质深成岩，即石英闪长岩、英云闪长岩、花岗岩，以及太古宙表壳岩包体，甚至还包括了早元古代的变质辉长岩、层状变质岩，早古生代闪长岩和早二叠世二长花岗岩等组成，已失去了原来的岩石地层意义。将其解体为太古宙叶柏寿片麻岩、曹家烧锅片麻岩、变质表壳岩组合，早元古代陈家窝铺单元辉长岩，早古生代上马架子超单元石英闪长岩、闪长岩和早二叠世八家子超单元二长花岗岩。
Through 1∶50000 regional geological surveying in Kaizhan, Xincheng, and studies on the section of former.“Dayingzi Formation”the authors considered that the “Dayingzi F.” was consisted of Archean metamorphic plutonite (quartz diorite, tonalite, granite), surface crustal rock enclosures;Early Proterozoic stratified metamorphic gabbro, Early Palaeozoic diorite,Early Permain adamellite, so “Dayingzi F.” should be disintegrated and subdivided into Archean Yebaishou gneiss,Chaojiashaoguo gneiss, metamorphic surface crustal rock assemblage;Early Proterozoic Chijiahangzi petrofabric, Chenjiawopu unit gabbro,Early Palaeozoic Shanmajiazi ultra unit quartz diorite, diorite; Early Permain Bajiazi ultra unit adamellite.
