中寒武世是祁连山乌鞘岭以东地区早古生代主要火山活动时期之一。在这个时期内,不仅喷发了较厚的各类海相火山物质,同时还形成了具有工业价值的多金属矿床。无产阶级文化大革命以来,许多地质生产、科研单位在本区做了大量的区测普查和研究工作,重点矿区的地层时代、构造、岩石和成矿特征均已有所报导。随着地质工作的发 The Middle Cambrian is one of the major Paleozoic volcanic periods east of Wushaoling Mountains in the Qilian Mountains. During this period, not only thicker marine volcanic substances of all kinds were erupted, but also polymetallic deposits of industrial value were formed. Since the Great Proletarian Cultural Revolution, many geological production and research institutes have conducted a large number of regional surveys and studies in this area. The stratigraphic age, tectonics, rock and mineralization characteristics of key mining areas have all been reported. With the development of geological work