Abstract: Three different units which have different characteristics were identified within the Aladağ ophioliticmelange. The lowest one is called "uniform basal sequence", the middle one "olistostrome sequence" and the top unit"chaotic sequence".Gravitational mass-flow and slide mechanism were effective during the formation of the first two sections. Thechaotic section, however, was formed by block accumulationdue to tectonic activity.The Aladağ ophiolitic melange acquired its lithostratigraphic features within the Senonian basin which was formed over the Upper Triassic-Liower Cretaceous platform carbonate basement.The contact between the ophiolitic melange and the carbonates which constitute the basement of the melange isdepositional. Aladağ ophiolitic melange should be considered as an autochthonous litostratigraphic unit which acquiredits properties in the site of formation.