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
Turks of Western Thrace province of East Macedonia and Thrace. However, the Greek language is also widely used. Article 37 through 45 of the Lausanne Treaty set forth the obligations of the Greek and Turkish governments to protect the Turkish and Greek minorities in their territories. Each country agreed to provide the following: The Lausanne Treaty defined the rights of the Muslim communities in Western Thrace, on the basis of religion, not ethnicity, as well as maintained a balance between the minority communities of both countries (Turks in Greece and Greeks in Turkey) on reciprocal obligations toward each of those minorities. The Treaty contained