The Kuan Ping Group is a sequence of the sedimentary-volcanic series of the early-middle Proterozoic, which hadbeen suffered multiple deformation and metamorphism. It consists of the greenschist with magno-siliceous marble and sericite quartzschist in the lower part of the Kuan Ping Group. In the middle, it is composed of the mica-quartz schist with magno-siliceous marble and amphibolite. The biotite marble and amphibolite occur in the upper. By recovering the primary rock they belong to the volcanic siliceous (Mg-rich carbonatite)-basic volcanic subformation, volcano-flyschoid subformation and flyschoid-earbonatite subformation, respectively.The Kuan Ping Group is distributed along the southern margin of North China Platform as a narrow belt, extended approximately 4 km from east to west and the total thinkness is more than 8 Km. It is possessed of the common feutures of the eugeosyncline sediment. According to the primary rock formation, it is believed that is not with the typical character of the ophiolite and is not also the product of the oceanic spreading ridge. The composition of the basic volcanic rock is similar to the K-poor tholeiite of the transition region between the coean and continent, and their tectonic enviroment is similar to that of the continent margin basin.