Sürgü Fault

The Sürgü Fault Zone (Sürgü Fay Zonu) is a major fault zone in south-central Anatolia. It contains the Sürgü fault. Rupture on this fault caused the second major (M>7) earthquake during the 2023 Gaziantep-Kahramanmaraş earthquakes that started in February 2023.

The fault zone extends (west to east) from Göksun to Çelikhan where it merges into the East Anatolian Fault. It is a "major fault recognized in the field" of geosciences and "was known to be capable of very significant earthquakes" such as in 1544 and 1986. As of 2023 it has been estimated to have an activated length of about 300 km.

During the 2023 Gaziantep-Kahramanmaraş earthquakes, the Sürgü Fault experienced a major earthquake of 7.6, which was followed by many aftershocks along the active length of the faultline.