Evaluation of the relative tectonic activity of the adıyaman fault within the arabian-anatolian plate boundary (Eastern Turkey)

A. Kalifa*, Z. Çakir, L. A. Owen, Kaya

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The left-lateral strike-slip Adıyaman fault is located in eastern Turkey within the plate boundary deformation zone between Arabia and Anatolia. The Adıyaman fault is a major splay from the East Anatolian Fault (EAF), one of the most important tectonic structures in the Eastern Mediterranean region. These faults are consequence of the collision between the Arabian and Anatolian plates and the resulting westward tectonic escape of Anatolia. Although the EAF has been intensively studied since its discovery in the late 1960s, little is known about the Adıyaman fault and its tectonic activity. In this study, we extract geomorphic indices including mountain-front sinuosity (Smf), valley floor width-to-height ratio (Vf), stream length-gradient (SL), catchment Asymmetry Factor (AF) and hypsometric integrals and curves (HI and HC) to evaluate the relative tectonic activity of the Adıyaman fault. These three geomorphic indices (AF, HI, and HC) are averaged to define an index for Relative Tectonic Activity (RTA) that allows the Adıyaman fault to be divided into categories of low, moderate and high RTA. The results confirm that the Adıyaman fault is an active fault with high to moderate Quaternary tectonic activity. However, this fault is of minor importance on accommodating plate boundary deformation, as evidenced by the recent crustal motions determined by GPS studies. Nevertheless, it is worthwhile to note that the Adıyaman fault still poses a significant seismic hazard for the region despite its relatively moderate tectonic activity.

Orijinal dilİngilizce
Makale numarası17.6
DergiGeologica Acta
Yayın durumuYayınlandı - 2019

Bibliyografik not

Publisher Copyright:
© A. Kalifa, Z. Çakir, L.A. Owen, Ş. Kaya, 2019 CC BY-SA.


This research has been funded by Istanbul Technical University BAP project. PhD. scholarship to A. Khalifa from the Turkish Government (YTB) in cooperation with the Egyptian Government (Cultural Affairs and Mission Sector) is acknowledged. The PhD candidate A. Khalifa was hosted as a visitor student in University of Cincinnati for one year, the support from the Department of Geology in the University of Cincinnati is appreciated. We thank the editor and referees for their constructive comments and advice that greatly helped us to improve our manuscript.

FinansörlerFinansör numarası
University of Cincinnati
Istanbul Teknik Üniversitesi

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