New Zircon U-Pb Age of Devonian Granites in the Niukutou Lead-Zinc Deposit, Qinghai Province and its Significance for Prospecting Blind Orebodies

摘要

Object The Eastem Kunlun Orogen (EKO),An important part of the Tethyan orogenic belt in the northern margin of the Qinghai-Tibet Plateau (Li et al.,2014;Ren Haidong et al.,2016),is a key area for geological research and mineral exploration (Li Bile et al.,2015).The Qimantag Mountain is located in middle segment of the EKO,which has experienced the Early Paleozoic and Late Paleozoic-Early Mesozoic superimposed orogenesis,together with multiepisodic magmatism and metallogenesis.