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
First Army (Turkey) First Army (Turkey) The First Army of the Republic of Turkey () is one of the four field armies of the Turkish Army. Its headquarters is located at Selimiye Barracks in Istanbul. It guards the sensitive borders of Turkey with Greece and Bulgaria, including the straits Bosporus and Dardanelles. The First Army is stationed in East Thrace. Ali İhsan Sabis is the first commander of the 1st Army, which has been operating since the Ottoman Empire. The 1st army depends on the Turkish Land Forces. The army is responsible for the Thrace region, the straits and the safety of Istanbul.