Zircon chronology and Hf isotopic composition of ore-bearing porphyry in the Bolong intrusion,Tibet

The Bolong copper deposit of Tibet is a large porphyry copper deposit and lies in the porphyry copper metallogenic belt of the western section of Ban’gonghu-Nujiang area.The copper property is located in approximately 80km northwest of Gaize County of Tibet,and at the south margin of the Qiangtang-Sanjiang compound slice,within the Duolong ore concentration area.1 Geology Overview Strata outcrop within the property mainly includes the first lithologic unit of Middle Jurassic Quse