LA-ICP-MS zircon U-Pb dating from granite-porphyry rcoks in Xikuangbei, East Junggar, Xinjiang, China. Geological Bulletin of China

Yang G X; Li Y J; Wu H E; Si G H; Jin Z

doi:10.12097/gbc.20090506

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Geological Bulletin of China > 2009 > 28(5): 572-577. > DOI: 10.12097/gbc.20090506

Yang G X, Li Y J, Wu H E, Si G H, Jin Z. 2009: LA-ICP-MS zircon U-Pb dating from granite-porphyry rcoks in Xikuangbei, East Junggar, Xinjiang, China. Geological Bulletin of China. Geological Bulletin of China, 28(5): 572-577. DOI: 10.12097/gbc.20090506

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LA-ICP-MS zircon U-Pb dating from granite-porphyry rcoks in Xikuangbei, East Junggar, Xinjiang, China. Geological Bulletin of China

Earth Science & Resources College of Chang′an University, Xi′an 710054, Shaanxi, China

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The weighted average 206Pb/238U age from LA-ICP-MS U-Pb zircon dating of the Xikuangbei granite-porphyry in East Junggar is (281±10)Ma，MSWD=9.3，the lower intersection point of 206Pb/238U-207Pb/235U concordia curve is (278±11)Ma，MSWD=7.5，within the tolerate error range, these two results belong to Early Permian. It is indicated that formation of the Xikuangbei granite-porphyry is during post-collision hypogene magmatic activity (around 330～265Ma)，which is later than Wulunguhe and Kalamaili alkali granite (around 300Ma). Late Paleozoic intrusion represented by granite-porphyry continued to late Early Permian
- LA-ICP-MS zircon U-Pb dating,
- granite-porphyry,
- Early Permian,
- Kalamaili,
- East Junggar

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LA-ICP-MS zircon U-Pb dating from granite-porphyry rcoks in Xikuangbei, East Junggar, Xinjiang, China. Geological Bulletin of China

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