| 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。 |
| 关键词: 锆石U-Pb定年 闪长岩 成矿时代 普龙矽卡岩型铜金矿床 泰国 |
| DOI： |
| 附件 |
| 投稿时间：2019-07-19修订日期：2019-08-05 |
| 基金项目: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）和中国地质调查局成都地质调查中心青年培育基金项目 |
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| Zircon U-Pb dating and its geological implications for the diorites from the Phu Lon skarn-type copper-gold deposit in Thailand |
| NIE fei, LIU Shusheng, YANG Yongfei, PENG Zhimin, GUO Linnan |
| (Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China) |
| Abstract: |
| 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. |
| Key words: zircon U-Pb dating diorite mineralization age Phu Lon skarn-type copper-gold deposit Thailand |
