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In this paper,the Jurassic granitoid dike that intrudes into Permian diabase was reported in Luokun,Luodian County,south Guizhou.Zircon LA-ICP-MS U-Pb dating of the granitoid dike yielded an age of 164.3±2.4 Ma with the εHf(t)range from +7.8 to +12.1