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
Demographics of Turkey remain in Turkey following the 1923 population exchange, which involved the forcible resettlement of approximately 1.5 million Greeks from Anatolia and East Thrace and of half a million Turks from all of Greece except for Western Thrace. After years of persecution (e.g. the Varlık Vergisi (1942–1944) and the Istanbul Pogrom of 1955), emigration of ethnic Greeks from the Istanbul region greatly accelerated, reducing the 120,000-strong Greek minority to about 7,000 by 1978. The 2008 figures released by the Turkish Foreign Ministry places the current number of Turkish citizens of Greek descent at the 2,000–3,000 mark. According to Milliyet there are