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
Western Thrace 2011 census. More than two-thirds (2/3) of the population are Orthodox Christian Greeks, while the remainder (shy of 120,000) are Muslims who are an officially recognised minority of Greece. Of these, about half are of Turkish origin, while another third are Pomaks who mainly inhabit the mountainous parts of the region. The Romani of Thrace are also mainly Muslim, unlike their ethnic kin in other parts of the country who generally profess the Orthodox faith of the Greek majority. Thrace is bordered by Bulgaria to the north, Turkey to the east, the Aegean Sea (Greece) to the south and the