Abstract:
The Erguna orogenic belt belongs to Caledonides.A series of copper polymetallic deposits occuring in Yanshanian are located in the north-west side of the Derbugan deep-seated fault of the orogenic belt so it is called Derbugan metallogenic belt.Erguna orogenic belt belongs to Caledonian epicontinental accretional belt in the south east margin of the Siberia plate.Then,the belt suffered transformation resulted from multiphase tectonic activity,especially continental rifting,and strong tectonomagmatic activation took place along the deep-seated faults striking NE,such as Derbugan deep-seated fault,and finally resulted in formation of copper-molybdenum and silver polymetallic deposits.These deposits were formed in favorable structure position of different depths in the upper crust,resembling a building of three storeys.Important metallogenetic factors of the Erguna orogenic belt are discussed in the paper,which indicates that metallogenetion is related to multiphase complex tectonic activity.
Xu Guizhong,Bian Qiantao,Wang Yifen. TECTONIC EVOLUTION AND METALLIZATION OF THE ERGUNA OROGENIC BELT[J]. Chinese Journal of Geology, 1998, (1): 84-92.