Thrace Basin Thrace Basin The European side of Turkey is called the Thrace Basin. It is the largest and thickest Cenozoic sedimentary basin in Turkey. The basin is triangular shaped, trends WNW-ESE and was formed by extension in late Middle Eocene to latest Oligocene times. This gas prone basin is located northwest of Istanbul, Turkey. About 9,000 meters of Eocene-Miocene marine clastics and continental sediments were deposited. Several basement faults were reactivated and underwent strike-slip motion in late Miocene times where the famous North Anatolian Fault bounds the southern part of the basin. The Cenozoic sedimentary succession, overlying Paleozoic to Mesozoic metamorphic
East Thrace the distribution of ethnoreligious groups in the local "sanjaks" was as follows: The Muslim "millet" was recorded as Turkish, while the church members of the Ecumenical Patriarchate as Greek. In the past century modern East Thrace was the main component of the territory of the Adrianople Vilayet, which excluded the Constantinople Vilayet, but included West Thrace and parts of the Rhodopes and Sakar. A publication from December 21, 1912 in the Belgian magazine "Ons Volk Ontwaakt" (‘Our Nation Awakes’) estimated 1,006,500 inhabitants in the vilayet: East Thrace East Thrace or Eastern Thrace ( or simply "Trakya"; , "Anatoliki Thraki"; ,