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
Arabs in Turkey Arabs in Turkey Turkish Arabs (, ) refers to citizens and residents of Turkey who are ethnically Arab. Beside the large expat and diaspora communities in Istanbul and other larger cities, south and southeastern provinces have a significant Arab community. Turkish Arabs are mostly Muslims living along the southeastern border with Syria and Iraq in the following provinces: Batman, Bitlis, Gaziantep, Hatay, Mardin, Muş, Siirt, Şırnak, Şanlıurfa, Mersin and Adana. The Arabs in eastern part of the border consist of many Bedouin tribes in addition to other Arabs who settled there before Turkic tribes came to Anatolia from Central Asia