Three figures (Figs. S1–S3) and two tables (Tables S1–S2). Figure S1: Images and related Energy Dispersive X-ray spectra to show that quartz melts infilled in feldspar crack; Figure S2: Features of samples selected for 40Ar-39Ar dating; Figure S3: Inverse isochron lines that yield false initial 40Ar/39Ar ratio; Table S1: Detailed SIMS U-Pb zircon results of sample CX48; Table S2: Detailed 40Ar/39Ar VG3600 Furnace Step-Heating Analytical Results.