Abstract: The Aladağ region mainly consists of the thrusted allochtonous sequences of Yahyalı, Siyah Aladağ,Çataloturan, Küçüksu, Minaretepeler, Üstkuşak and Beyaz Aladağ and includes ophiolitic melange, Tertiary sedimentsand moraines. The first eight sequences were deposited during the period from Devonian to Lower Cretaceous. Thesequences of Yahyalı, Siyah Aladağ, Küçüksu, Minaretepe and ophiolitic melange are mineralized. Besides the stockwork - type Aladağ - Delikkaya mine, all of the zinc - lead carbonates were deposited along tectonic fractures trendingN - S and NE - SW.The orebodies, which were formed through several stages, are probably hydrothermal in origin. Primary originand the formation of ore minerals represented by sulphide mineral parageneses can be explained by two models.According to the first one the ores were emplaced by either lateral segregation processes- hydrothermal solutionsin the above five sequences during Middle - Upper Creta ceous before the thrusting- According to the second modelthe ores are related to the Paleocene - Lower Eocene Yahyalı granitoids- The ophiolitic melange belts lying underthe thrusted sequences did not allow the migration the ore solutions upward in the upper thrusted sequences. Geological data have shown that the second model is more acceptable for the study area.Ore bodies in the Aladağ region were deposited simultaneously with those in the Bolkardağ region which arerelated to the Horoz granitoids- These two districts were separated by the Ecemiş sinistral fault in their presentposition.The sulphide ores are affected by multikarstification during Middle and Upper Tertiary through several phases of uplift and subsidence of the region.