Zircon evolution from migmatite to crustally-derived granite: A case study of late Neoarchean migmatite in the Yishan area, western Shandong, North China Craton

•Late Neoarchean migmatites and crustally-derived K-rich granites are widespread in Yishan, western Shandong.•Progressive changes in the features of zircons from paleosome, through migmatite, to granite.•The oscillatory zoning of newly-grown zircons becomes more pronounced with migmatite evolution.•The widespread granites in western Shandong did not form through further evolution of the diatexites.•These granites formed by higher-temperature melting of the source region.