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The Evolution and the Metallogenic Characteristic of Lanping Basin

ZHANG Feng,TANG Ju-xing,CHEN Hong-de,FAN Xiao-hua,CHEN Sheng-hua,CHEN WEN-bin,WANG Cheng-hui,XIE Hui(1.Institute Of Sedimentary Geology,Chengdu University Of Technology,Chengdu 6 10059 China;2.Institute Of Mineml Resources Chinese Academy Of Geological Sciences,Beijing 100037 China;3.State Key Laboratory Of Environmental Geochemistry,Institute Of Geochemical Chinese Academy Of Sciences,Guiyang 550002 China;4.China University of Geosciences,Beijing 100083 China)  
The evolution of Lanping Basin is subjected to its tectonic background,which experienced intracontinental rift basin stage from Middle Triassic to Early Jurassic,depression basin stage from middle to late Jurassic,Foreland basin in Cretaceous and Strike-slip basin from Palaeocene to Miocene.Mineralization was Closely related to the Basin nature,the intracontinental rift basin stage was the important mineralogenetic epoch,the mineral deposit structure with the character of hydrothermal ore deposit.The copper polymetallic deposit was formed during the depression basin stage.It was prepared for Ore-forming materials to Himalayan phase during Foreland basin stage.Because of strongly nappe tectonic movement,the fluid that came from deep-seated and superficial Red Beds was mixed.So,it had provided a lot of ore-forming materials and formed large-scale ore deposit such as JinDing lead-zinc ore deposit located in the structural trap.
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