f Unconventional Potential of the Interior Basins of Turkey; Central Anatolia

The Tuzgölü Basin is composed of many sub-basins and depression areas. Those sub-basins are seperated from each other according to their sedimentation history and lithological differences (Fig-1). Although they are components of a large and unique basin system (Central Anatolian Basin), each of these sub-basins are named seperately according to their geographical locations such as Haymana, Tuzgolu and Eregli-Ulukışla Basin. The largest system is surrounded by Aladaglar to the SE, Nigde Massif to the east, Bolkar Mountains to the south. The Tuz Gölü Basin developed during the Late Senonian - Oligocene. Over 10,000 meters of sediments, representing a complete sedimentary cycle, accumulated in the deepest part of the basin. Subsidence occurred during the Upper Senonian - Early Eocene, followed by regression that started in the Late Eocene and lasted until the end of Oligocene. During the Late Senonian - Early Eocene, the Tuz Gölü Basin formed as a unique, continuous depression with the Haymana area to the northwest. After the deposition of the Middle Eocene nummulitic limestone, the Tuz Gölü Basin was separated from the uplifted Haymana basin by a fault zone along the eastern side of the Karacadağ uplift to the north of the Lake Tuzgölü.