Abstract: With the method of single zircon LA-ICP-MS U-Pb dating,the magmatic zircon ages of 129.3±2.5 Ma is determined in the K-feldspar granites from Lingshan pluton which is located in the West Dabie orogen and intruded Sujiahe Group.Integrated analysis reveals that the Lingshan granitic pluton is A2-type granite characterized with high silica,alkaline contents and low magnesium and calcium.The alkaline intrusive is formed in the anorogenic rift valley setting,which implied the ending of orogenic stage and the beg...