地质概况清原地区位于华北地台北部边缘,地处辽东台背斜及铁岭至靖宇古隆起带上,是我国东北铜矿重要产地。太古代鞍山群变质岩广泛分布于本区,主要为各类角闪质和黑云质片麻岩、混合岩。经原岩恢复,其原岩都具有火成岩和正常沉积岩的双重性质。角闪质岩类的原岩是一套正常沉积岩(泥质灰岩或钙质泥砂 Geological Survey Qingyuan region is located in the north edge of North China platform, located in the Liaodongtai anticline and Tieling to Jingyu paleo-uplift, is an important origin of copper mine in northeast China. The Archean Anshan Group metamorphic rocks are widely distributed in this area, mainly including various types of hornblende and biotite gneiss, mixed rock. After the restoration of the original rock, the original rock has the dual nature of igneous rock and normal sedimentary rock. The original rock of the amphibolite is a set of normal sedimentary rocks (mudstone or calcareous sand)