Thrace Basin basement, comprises interbedded fine to coarse grained clastics from a variety of depositional environments, turbidite, muddy carbonates with local reef developments, river channels and tuffs. More than 400 wells were drilled till 2008; 14 gas and 3 oil fields were discovered and all of them are producing. Main gas productions zones are between Eocene- Oligocene deposits; Hamitabat (turbiditic sandstones), Ceylan (tuffs), Sogucak (reefal limestone), and Osmancik (deltaic sandstone) formations. Shales of Hamitabat and Mezardere formations have good source potentials. Thrace Basin The European side of Turkey is called the Thrace Basin. It is the largest and thickest Cenozoic sedimentary basin
Eastern Macedonia and Thrace prefectures, except for Thasos, which was part of the Kavala prefecture. Unlike the former prefectures, the regional units however have very limited administrative powers. Along with Central Macedonia, the region is supervised by the Decentralized Administration of Macedonia and Thrace based at Thessaloniki. The political post of the Regional governor () was also created in the course of the Kallikratis reform and can be considered the successor of the former prefects. The current governor is Christos Metios, who succeeded in November 2016 deceased Giorgos Pavlidis (Nea Dimokratia). Pavlidis was elected in the 2014 regional election, beating the incumbent first-ever regional