U-Pb Dating of Zircons from the Linyang Granitic Intrusion in the Nanling Metallogenic Belt and Its Significance to Tectonics and Metallization

The Linyang granitic intrusion is located in the east segment of the Nanling metallogenic belt. Due to a lack of research, it is not well known for its emplacement age. In this paper, the zircon U-Pb dating results from the Linyang granite through Laser Ablation-Multicollector Inductively Coupled Plasma-Mass Spectrometry (LA-MC-ICPMS) show that the granite near a fault and Xiacun ore spot intrude at (233.1±1.3) Ma and (243.3±2.1) Ma, respectively. Therefore, the Linyang granite formed in the Indo-Chinese epoch during the continent-continent collision together with uplifting and thickening of the earth's crust, and further research is necessary for the potential metallization of the Linyang intrusion that possibly occurred in the Indo-Chinese epoch or Yanshan epoch.