地质通报Issue(9)：1320-1325,6.
内蒙古莲花山铜矿区花岗闪长斑岩LA-ICP-MS锆石U-Pb年龄
LA-ICP-MS zircon U-Pb dating of granodiorite por-phyry in the Lianhuashan copper deposit of Inner Mongolia and its geological implications
摘要
Abstract
On the basis of previous studies, this paper carried out zircon U-Pb dating for mineralization-associated granodiorite por-phyry to further study its metallogenic epoch. Four groups of ages were obtained. The first group contains one zircon with 206Pb/238U age of 343Ma±2Ma;the second group contains one zircon with 206Pb/238U age of 264Ma±2Ma;the third group contains one zircon with 206Pb/238U age of 256Ma±2Ma;the fourth group comprises 17 zircons, whose 206Pb/238U ages vary from 240Ma to 249Ma, with a weighted mean 206Pb/238U age of 246.4Ma ± 1.2Ma (N=17). In conjunction with characteristics of CL imaging, the authors hold that the emplacement of granodiorite porphyry occurred between the Late Permian and Early Triassic.关键词
花岗闪长斑岩/LA-ICP-MS锆石U-Pb定年/成岩成矿环境/莲花山铜矿/大兴安岭Key words
granodiorite porphyry/LA-ICP-MS zircon U-Pb dating/rock-forming and ore-forming environment/Lianhuashan copper deposit/Da Hinggan Mountains分类
天文与地球科学引用本文复制引用
王忠禹,孙景贵,白令安,柴鹏,古阿雷,赵克强,李玉洁..内蒙古莲花山铜矿区花岗闪长斑岩LA-ICP-MS锆石U-Pb年龄[J].地质通报,2014,(9):1320-1325,6.基金项目
国家自然科学基金项目 （）
