| The Lanping–Simao basin in the center of San-jiang (Three Rivers) region, located in the southeast-ern margin of the Tibetan Plateau, is tectonically in the transition zone between the Gondwana and Eura-sia tectonic domains. It is also the frontier zone of northeastern extrusion of Indian plate towards the Eurasia plate as well as the escape zone for the deep material. Extensive metallogenesis occurred in the geology epochs due to the sophisticated geological process. Numerous ore deposits of diverse genetic types and metal speciation were formed in Cenozoic, making the Sanjiang one of the most productive and potential regions for metal resources in China. The Cu, Co, Pb, Cr, and Zn resource reserves accounts for 40%、55.7%、29.8%、80%and 30.8% of the total reserves, respectively. The Au, PGE and REE reserves were almost one half of that in china. |