ABSTRACT: Tertiary volcanism in the surroundings of Eleşkirt, a provincial, town, of Ağrı, in Eastern Anatolia,commenced at the beginning of Upper Miocene and continued till to the middle of Lower Pliocene, with three main/distinct, phases. Upper1 Miocene aged Kösedağ volcanics are. represented by dacitic lavas, tuffs and. agglomerates.. UpperMiocene, aged Sekirdağ volcani.cs are. mainly represented by andésites with subordinate trachyandesite and dacite type lavas` and pyrocla.sti.cs, Upper Miocene-Lower Pliocene, aged. Karakurt volcanics are largely represented by dacites andlocally by rhyodacite, rhyolite .and andesitic lavas- interbedded with tuffs .and ignimbrites. The results of geochemical(carried out on this ttiree-distirtcit volcanic rocks) analyses indicate a subalkaline affinity with calcalkaline characteristicsand show similar chemical characteristics with that of Cascade-type cale alkaline, volcanic rock. The geochemical resultsalso indicate that the volcanic, rocks of the investigated area were, basically originated from, a crustal magma and. represents the earliest products, of the post-collisional volcanism in the Eastern Anatolia, resulting from, mantle uplifting underlying a thick, crust, that was- formed, in. a compressional regime.