Zircon U-Pb dating of porphyroid monzonitic granite in the Kaerqueka copper polymetallic deposit of East Kunlun Mountains and its geological significance

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.