摘要
Geophysics characterized by low seismic velocity, low density, low viscosity and high geother- mal gradient, metamorphic core complex with komatiite and a two-layer structure pattern, and occurrence of large bimodal igneous province and paleo-geothermal features estimated at 522-608℃, 0.3-0.73 GPa and 23℃/kin indicate that Neoarchean-Proterozoic mantle plume were developed in the Zhongtiaoshan re- gion. Metallogeny here shows co-existence pattern of four ore generations. Temporally, the ore formation is close to magma intrusion. Spatially, most deposits occur symmetrically along two crosscutting sets of faults in the rift zone. Ore-forming elements and mineral components and the ore-forming temperature de- crease outward from the center. Before Neoarchean the Cu-rich Yangtze plate underthrusted under North China plate leading to thickening of crust at Zhontiaoshan rift area and abundant ore material field. Pulse rising of the mantle plume carried hydrothermal fluid upward and extracted Cu and Zhongtiaoshan area be- eames the copper ore deposit-clustered area.