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
Northern Thrace Northern Thrace Northern Thrace or North Thrace (, ) (as opposed to Western Thrace and East Thrace to the south) constitutes the northern and the largest part of the historical region of Thrace. Bulgarian Thrace is located in Southern Bulgaria and refers to the whole territory south of the Balkan Mountains and east of the Mesta River; to the Greek and Turkish borders in south and to the Black Sea in east. It encompasses Sredna Gora, the Upper Thracian Plain and 90% of the Rhodopes. The climate differs from continental to transitional continental and mountainous. The highest temperature recorded in