Citation: | ZHANG Yong, ZHANG Daming, LIU Guoyan, LI Zefeng, ZHAO Yongliang, LI Hengheng, WANG Shengming. Zircon U-Pb dating of porphyroid monzonitic granite in the Kaerqueka copper polymetallic deposit of East Kunlun Mountains and its geological significance[J]. Geological Bulletin of China, 2017, 36(2-3): 270-274. |
The Kaerqueka copper polymetallic deposit is located in the western part of the East Kunlun Mountains metallogenic belt, characterized by porphyritic-skarn-hydrothermal series, with the main metallogenic elements being Cu, Mo, Pb, Zn and associated elements being Fe, Au, Ag, W, Sn. The LA-ICP-MS zircon U-Pb chronological study of porphyroid monzonitic granite shows that the porphyroid monzonitic granite zircon 206Pb/238U age is 226.5±0.5Ma (n=25, MSWD=1.05), which suggests that the porphyroid monzonitic granite was formed in Late Triassic, during the Indosinian magmatic activity.
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Geological sketch map of the Kaerqueka copper-molybdenum polymetallic ore district
Photomicrographs of porphyroid monzonitic granite in the Kaerquek copper polymetallic deposit
Zircon CL images and 206Pb/238U ages of porphyroid monzonitic granite (2012KA1)
Zircon U-Pb concordia plot (a) and 206Pb/238U ages (b) of porphyroid monzonitic granite (2012KA1)