The high-to ultrahigh-pressure metamorphic rocks of the Atbashy complex were petrologically investigated. The eclogites of the Choloktor Formation show a prograde evolution from epidote-blueschist facies (P = 17-21 kbar and T = 450-515 degrees C) to peak eclogite-UHP conditions (P = 26-29 kbar and T = 545-615 degrees C) with a subsequent epidote-amphibolite and greenschist facies overprint. The mica-schists of the Choloktor Formation also show a clockwise P-T path from blueschist/epidote-blueschist facies conditions through peak eclogite facies conditions (P = 21-23 kbar and T = 530-580 degrees C) to retrograde epidote-amphibolite and greenschist facies stages. A comparison of the P-T paths in the eclogites and mica-schists of Choloktor Formation reveal that they may have shared their P-T history from peak to retrograde stages. The mica-schists of the Atbashy Formation record peak metamorphism of P = 10-12 kbar and T = 515-565 degrees C, which indicates that the highest grade of regional metamorphism in the Atbashy Ridge was epidote-amphibolite facies.