Evaluation of the Relative Tectonic Activity of the Adıyaman fault within the Arabian-Anatolian plate boundary (eastern Turkey)
Khalifa, A. (Istanbul Technical University. Department of Geological Engineering)
Çakir, Z. (Istanbul Technical University. Department of Geological Engineering)
Owen, L. A. (University of Cincinnati. Department of Geology)
Kaya, Ş. (Istanbul Technical University. Department of Geomatics)

Date:	2019
Abstract:	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.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Tectonic geomorphology ; Geomorphic indices ; Adıyaman strike-slip fault ; Eastern Turkey
Published in:	Geologica acta, Vol. 17 (2019) , p. 1-17 (Articles) , ISSN 1696-5728

Adreça original: https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2019.17.6
Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/360116
DOI: 10.1344/GeologicaActa2019.17.6

17 p, 6.6 MB

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