LA-ICP-MS zircon U-Pb dating of porphyries in the Qiagong iron skarn deposit, Tibet, China

Xie, Yuling, Li, Yingxu, Chang, Zhaoshan, Cooke, David R., Dominy, Simon C., Li, Guangming, and Zhang, Li (2009) LA-ICP-MS zircon U-Pb dating of porphyries in the Qiagong iron skarn deposit, Tibet, China. In: Proceedings of the 10th Biennial Meeting of the the SGA 2009 (1) pp. 303-305. From: Smart Science for Exploration and Mining: 10th Biennial Meeting of the SGA 2009, 17-20 August 2009, Townsville, QLD, Australia.

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Monzonitic granite porphyry and quartz-phyric porphyry are related to hydrothermal alteration and Fe-Cu-Pb-Zn mineralization at the Qiagong skarn deposit in the middle part of the Gangdese mineralization belt, Tibet, China. Both of the intrusions are peraluminous. The monzonitic granite porphyry has a high-K calcalkaline composition whereas the quartz-phyric porphyry is shoshonitic. Zircons from these two porphyries were dated using the LA-ICP-MS method and the U-Pb ages are 68.8 ±2.2 Ma and 64.6 ±1.6 Ma, respectively. The ages and metal associations for these two intrusions are unique in the Gangdese belt, and may lead to new understandings of the geodynamic setting.

Item ID: 26290
Item Type: Conference Item (Research - E1)
ISBN: 978-0-9805586-8-5
Keywords: Qiagong Fe skarn, Tibet, zircon dating, LA-ICP-MS
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Date Deposited: 18 Jun 2013 05:53
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040307 Ore Deposit Petrology @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840102 Copper Ore Exploration @ 100%
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