Fig.1 Simplified tectonic inset map (a) and geological sketch map of the study area (b) (base map after XIAO et al. [7])

Fig.2 Field outcrop and thin-section microscopic photos of the monzogranite

Fig.3 Zircon CL images of the Early Cretaceous monzogranite

Fig.4 Zircon U-Pb concordia (a) and weighted average (b) diagrams for the Early Cretaceous monzogranite

Fig.5 A/CNK-A/NK ((a),base map after MANIAR et al. [20]), ternary Q-A-P ((b),base map after LE MAITRE et al. [21]),TAS ((c),base map after MIDDLEMOST [22]), SiO2-K2O ((d),base map after PECCERILLOA et al. [23]) diagrams for the Early Cretaceous monzogranite

Fig.6 Primitive mantle-normalized multi-element diagram (a) and chondrite-normalized REE patterns (b) for the Early Cretaceous monzogranite (normalizing values after SUN et al. [24])

Fig.7 10000×Ga/Al-Nb (a) and 10000×Ga/Al-(Na2O+K2O)/CaO (b) discrimination diagrams for the Early Cretaceous monzogranite (base map after WHALEN et al. [30])

Fig.8 Ternary Nb-Y-3Ga(a) and Nb-Y-Ce(b) tectonic discrimination diagrams for the Early Cretaceous monzogranite (base map after EBY[49])

Fig. 9 R1-R2 diagram ((a),base map after BATCHELOR et al. [50]) and Rb-(Nb+Y) tectonic discrimination diagram ((b),base map after PEARCE et al. [51]) for the Early Cretaceous monzogranite

Fig.10 FeOT/(FeO+MgO)-SiO2 (a) and SiO2-Al2O3 (b) diagrams for the Early Cretaceous monzogranite (base map after MANIAR et al.[20])