The İnönü-Eskişehir Fault System (İEFS) is a NW- to WNW-trending zone of active deformation about 15–25 km wide, 400 km long and characterized predominatly by strike-slip faulting. In this study, the Yörükkaracaören (SE of Eskişehir)-Sivrihisar section of the İEFS was investigated. | Neotectonic characteristics of the IInönü Eskişehir fault system in the Kaymaz (Eskişehir) region: Influence on the development of the Mahmudiye-Çifteler-Emirdağ Basin