沂沐裂谷是中国东部呈扇形展布的大陆裂谷系,从晚侏罗至白垩世裂谷岩浆活动强烈,发育了一套碱性、钙碱性火山建造,尤以中生代钙碱性火山活动具有特色,并常常形成许多巨大的古火山机体,本文通过对产于古火山机体中两个含金斑岩铜岩床研究,初步得出其主要成矿地质特征。 The Yiliu rift is a fanned continental rift system in eastern China. From the Late Jurassic to the Cretaceous, the rift magmatism was strongly developed and a set of alkaline and calc-alkaline volcanoes were developed. The Mesozoic calc-alkaline volcano The activities are characterized and often form many huge volcanic bodies. Based on the study of two gold-bearing porphyry copper-bearing beds in the ancient volcano body, the main geological features of the ore-forming geology are obtained.