The Late Cambrian to Late Cretaceous aged basement rocks crop outalong the Göksu River (west of Silifke). The rock units seen the region are belong to autochthonous Geyikdağı Unit and allochthonous Bozkır and Aladağ units. The Upper Cambrian-Middle Ordovician aged Ovacık Formation occcurs at the base of the Geyikdağı Unit. The Upper Devonian-Carboniferous Karaütük Formation overlies the Ovacık Formation with an unconformity and subdivided into two members Kerkezlik and Hangediği. The Kerkezlik Member consists of recrystallized limestones and dolomites. The Hangediği Member is represented by conglomerates which including very thin shale and quartzite interbedded. The Geyikdağı Group overlies the Karaütük Formation with a reverse fault. The Jurassic-Cretaceous aged Sayeteği formation, occurs at the boottom of the Geyikdağı Group. This formation can be subdivided into two members: Kocakapızdere Dolomite Member at the bottom and Bilalli Limestone Member at the top. The Sayeteği Formation passes upward in to the Gölbeleni Formation which was deposited in a pelagic environment during the Upper Cretaceous. The Çanaktepe Member is recognised in the Gölbeleni Formation. In the studied area, the Bozkır Unit overlies tectonically the Geyikdağı Unit and is represented by the Upper Cretaceous Şeyhler ophiolitic melange. The Ağıldere Group forms the base of the Aladağ Unit which tectonically overlies the Bozkır and Geyikdağı units. This group begins with the Carboniferous the Değirmendere Formation. The Lower Permian aged Yarıktaş Formation overlies the Değirmendere Formation. The Yarıktaş Formation conformably overlain by the Akkorum. Formation which was deposited during the Late Permian. The Akkorum Formation is also covered by the Jurassic aged Kemertaş Group with an unconformity. The Boztepe Formation occurs at the Upper Jurassic aged Çambaşıtepe Formation. This formation is divided in to two members: The Çıtmıklıtaş Dolomite Member at the bottom and Avcılarını Limestone Member at the top.