摘要
泰国普龙矽卡岩铜金矿床是琅勃拉邦-黎府铜金多金属成矿带内一个大型矽卡岩铜金矿床。为了厘定普龙矽卡岩型铜金矿床成岩成矿时代、探讨其矿床成因,本文开展了与矽卡岩化密切相关的闪长岩锆石LA-ICP-MS U-Pb年代学研究。研究表明,普龙铜金矿成矿时代为240.6±1.2Ma,与闪长岩结晶年龄一致。结合前人研究成果,认为琅勃拉邦-黎府铜金多金属成矿带在晚二叠世-早三叠世发生了一次重要的斑岩-矽卡岩-热液铜金成矿事件。
The Phu Lon skarn-type copper-gold deposit is one of the large-sized skarn-type copper-gold deposits in the northern Luang Prabang-Loei copper-gold polymetallic metallogenic belt in Thailand.The LA-ICP-MS zircon U-Pb isotopic dating give a weighted average age of 240.6±1.2 Ma for the formation of the diorites associated with the skarnization within this copper-gold deposit.This age should represent the mineralization age of the Phu Lon copper-gold deposit,i.e.,the Middle to Late Triassic.The Luang Prabang-Loei copper-gold polymetallic metallogenic belt once recorded an important porphyry-skarn-hydrothermal copper-gold mineralization event during the Late Permian to the Early Triassic.
作者
聂飞
刘书生
杨永飞
彭智敏
郭林楠
NIE fei;LIU Shusheng;YANG Yongfei;PENG Zhimin;GUO Linnan(Chengdu Center,China Geological Survey,Chengdu 610081,Sichuan,China)
出处
《沉积与特提斯地质》
CAS
CSCD
2019年第4期71-78,共8页
Sedimentary Geology and Tethyan Geology
基金
中国地质调查局地质调查项目“东南亚大型锡铜金矿资源基地评价”(DD2019444)
“老挝、柬埔寨及邻区矿产资源潜力评价”(DD20160107)
中国地质调查局成都地质调查中心青年培育基金项目
