Akademik Veri Yönetim Sistemi
Turk Deprem Arastirma Dergisi, cilt.6, sa.2, ss.349-368, 2024 (Scopus, TRDizin)
This paper presents the results of paleoseismological studies along the Eskisehir Fault and the preliminary implications for the earthquake behavior of the Inönü-Oklubali segment of the Eskisehir Fault. Morphotectonic markers (such as hanging valley, relay ramp) in the vicinity of Inönü indicate that dominant normal faulting controlled the region for a long period in the geological past. However, geological field observations and morphotectonic markers such as right lateral displacement of young stream beds indicate that the current movement along the extension of the Eskisehir Fault between Inönü and Oklubali has evolved into a strike-slip character. Along the fault segment, at least 2 paleo events have been distinguished in the last 10800 years with paleoseismological fault excavations and Holocene activity of the fault has been proven. Our findings reveal that the Inönü-Oklubali segment of the Eskişehir Fault has produced surface ruptures about 3000-3500 years recurrence and that 2500-3000 years have passed since the last surface faulting. When the quiescent period is evaluated together with the suggested slip rate along the segment, it shows that there is a high risk of an earthquake that may produce a surface rupture at any time in this part of the Eskişehir Fault.