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WANG Zhong-yu, SUN Jing-gui, BAI Ling-an, CHAI Peng, GU A-lei, ZHAO Ke-qiang, LI Yu-jie. 2014: LA-ICP-MS zircon U-Pb dating of granodiorite porphyry in the Lianhuashan copper deposit of Inner Mongolia and its geological implications. Geological Bulletin of China, 33(9): 1320-1325.
Citation: WANG Zhong-yu, SUN Jing-gui, BAI Ling-an, CHAI Peng, GU A-lei, ZHAO Ke-qiang, LI Yu-jie. 2014: LA-ICP-MS zircon U-Pb dating of granodiorite porphyry in the Lianhuashan copper deposit of Inner Mongolia and its geological implications. Geological Bulletin of China, 33(9): 1320-1325.
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LA-ICP-MS zircon U-Pb dating of granodiorite porphyry in the Lianhuashan copper deposit of Inner Mongolia and its geological implications

  • College of Earth Sciences, Jilin University, Changchun 130061, Jilin, China;2. College of Earth Sciences, Guilin University of Technology, Guilin 541004, Guangxi, China;3. College of Life Sciences, Jilin Agricultural University, Changchun 130000, Jilin, China

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  • On the basis of previous studies, this paper carried out zircon U-Pb dating for mineralization-associated granodiorite porphyry 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.
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