ABSTRACT: This paper discusses the regional distribution and. geocbemical characteristics of the Cenozoic volcanism of Thrace that commenced in Upper Eocene continuing intermittently until the end of Pliocene.The volcanic rocks of the region that Upper Eocene-Upper Oligocène aged, originated along a collision zone,.are of calcalkaline to high potassic calcalkaline affinities. The volcanism of the period of Upper Miocene isoriginated from.», the mantle, with considerable erustai contamination, and they are shoshonitic affinity., A basaltic volcanism originated from the mantle, of alkaline offinity occurred during the Pliocene constitutingthe final stages of Cenozoic activity in Thrace