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
Bulgarian Catholic Apostolic Vicariate of Thrace Bulgarian Catholic Apostolic Vicariate of Thrace The Bulgarian Catholic Apostolic Vicariate of Tracia (informally Tracia of the Bulgarians) was the second missionary, pre-diocesan jurisdiction of the Bulgarian Greek Catholic Church "sui iuris" (Eastern Catholic, Byzantine Rite in Bulgarian language). As Apostolic Vicariate it was exempt, i.e. directly dependent on the Holy See, and entitled to a titular bishop. It was established on 7 April 1883 as Bulgarian Catholic Apostolic Vicariate of Tracia alias Hadrianopolis (after its see Adrianople, now Edirne, in Turkish Thrace) on Ottoman Turkish and Bulgarian territory in Thrace split off from the Bulgarian Catholic Apostolic Vicariate of