引用本文:聂飞, 刘书生, 杨永飞, 彭智敏, 郭林楠.泰国普龙矽卡岩型铜金矿床闪长岩锆石U-Pb定年及意义[J].沉积与特提斯地质,2019,39(4):71-78.[点击复制]
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泰国普龙矽卡岩型铜金矿床闪长岩锆石U-Pb定年及意义
聂飞,刘书生,杨永飞,彭智敏,郭林楠
0
(中国地质调查局成都地质调查中心, 四川 成都 610081)
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:
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
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

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