Geochemistry of apatites from Mesozoic granitoids in the northeastern North China Craton and their petrogenetic implications

We report geochemical data of apatites from Mesozoic granitoids in the northeastern North China Craton (NCC), and discuss relationship between apatite whole-rock compositions with aim using to constrain granitoid petrogenesis. Measured Sr contents Sr/Y ratios exhibit positive correlations those their host rocks, εNd(t) values display a strong linear εHf(t) zircons granitoids. In addition, similar rare-earth element (REE) distribution patterns although have much higher REE contents. Sr/Y–Y variation diagram for is proposed distinguish adakitic rock non-adakitic. The apatites, together other indexes, can also be used discriminate highly fractionated unfractionated I-type granite or type granite. Nd isotopic well revealed magma source NCC. conclusion, we highlight that geochemistry reflects characteristics has potential track detritus.