Eclogiticgarnet-amphibolerocksarescatteredaroundtheSongshugouultramaficbodiesinQinlingMountains.Threemetamorphicstagesarerecognizedintermsofpetrography,mineralchemistryandgeothermobarometry.Thefirstalbite-amphibolestagewasofgreenschistfaciesmetamorphismwithtypicalmineralassemblageofactinolite+epidote+chlorite+albite;thepressureandtemperatureconditionswereequaltoorlowerthan500MPaandabout400℃.Thesecondprogradeeclogiticgarnet-amphibolestagewasofamphibole-eclogitefaciesmetamorphismwithtypicalmineralassemblageofgarnet+hornblende±clinopyroxene+rutilewithoutphagioclase,thepressureconditionwasatleast1000-1200MPaandthetemper-atureabout600℃.Thethirdretrogradeepidote-amphibolestagewasofepidote-amphibolitefacieswithassemblageofplagoclase+hornblende+epidote+ilmenite/titanite,thetemperaturewas500-600℃andthepressurefrom800MPadownto500MPa.AllthreestagestookplaceinonesingletectonothermaleventcalledJimingianmovementa