Origin of Cu Geochemical Deomains in the Middle-Lower Yangtze River Region and Its Constraints on the Formation of Cu Deposit Districts
LIU Bin1,2, WANG Xue-qiu1,2
1. Key Laboratory of Geochemical Exploration Institute of Geophysical and Geochemical Exploration, Langfang Hebei 065000, China;
2. UNESCO International Centre on Global-scale Geochemistry, Langfang Hebei 065000, China
Abstract：In this paper, we analyze the genesisof large deposits/ore districts in the Middle-Lower Yangtze River region from the originof ore materials. Five copper geochemical domains in the study area were selected.All discovered Cu deposit concentration areasand most of the large Cu deposits are located within such geochemical domains. Combined with published Sr-Nd, Hf isotopeand zircons U-Pb age data of ore-forming rocks in the study area, we conclude that the large amount of Cu in the region was mainly derived from the enriched lithospheric mantle and a small amount addition of crustal material. These large-scale Cu rich domains can provide huge ore-forming materials for the Middle-Lower Yangtze River metallogenic belt, formingextensive copper mineralization after long-term tectonic activity andmagmatism.
刘彬, 王学求. 长江中下游地区铜地球化学块体物质来源及其对铜矿集区形成的制约[J]. 矿物岩石地球化学通报, 2018, 37(2): 271-282.
LIU Bin, WANG Xue-qiu. Origin of Cu Geochemical Deomains in the Middle-Lower Yangtze River Region and Its Constraints on the Formation of Cu Deposit Districts. Acta Metallurgica Sinica, 2018, 37(2): 271-282.
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