Shagou deposit mainly lies in the metamorphic rock of Taihua Group, Archaeozoic erathem.本矿床主要的赋矿地层为新太古界太华群高级变质岩.Buried hills of Archaeozoic, Paleozoic and Mesozoic Eras developed well in the west part of Dongying Depress...

太古代...

archaeozoic的音标：archaeozoic的英式发音音标为：['ɑ:kɪəəʊzəʊɪk]archaeozoic的美式发音音标为：['ɑkɪroʊzoʊɪk]...