In this paper,we present zircon U-Pb ages,in situ Hf isotopic,whole-rock chemical and Nd isotopic data for the Lianyang composite granite in the Nanling region.Zircon LA-ICP MS U-Pb dating of the supplementary intrusion yielded ages of 100-104 Ma,which is significantly younger than the predominant intrusion(144Ma),suggesting that the former(fine-grained biotite granite)is unlikely to be residual melts through fractionation of the latter(coarse-grained porphyritic biotite granite).Both of the two rocks show ...
MA Xinghua1,2,CHEN Bin1,*,WANG Zhiqiang1,GAO Lin1,SUN Keke11.Key Laboratory of Orogenic Belts and Crustal Evolution,Peking University,Beijing100871,China2.Key Laboratory of Metallogeny and Mineral Assessment,Chinese Academy of Geological Sciences,Beijing1