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Tectonic controls on active deformation and landscape evolution in the Amanos Mountains along the Düziçi–İskenderun Fault Zone, Eastern Anatolian Fault System.

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Title: Tectonic controls on active deformation and landscape evolution in the Amanos Mountains along the Düziçi–İskenderun Fault Zone, Eastern Anatolian Fault System.
Authors: Akgün, Elif1 (AUTHOR) efiratligil@firat.edu.tr, Softa, Mustafa2 (AUTHOR), Irfan, Mohammad3 (AUTHOR), Topal, Savaş4 (AUTHOR)
Source: Progress in Physical Geography: Earth & Environment. Aug2026, Vol. 50 Issue 4, p553-579. 27p.
Subjects: Fault zones, Morphotectonics, Landscapes, Grabens (Geology), Paleoseismology, Earthquake hazard analysis
Abstract: The Düziçi–İskenderun Fault Zone (DIFZ), located within the Amanos Mountains at the intersection of the African, Arabian, and Anatolian plates, is a structurally segmented and tectonically active component of the Eastern Anatolian Fault System (EAFS). This study integrates morphotectonic analysis, paleoseismological reevaluation, and limited field observations to elucidate the DIFZ's role in deformation patterns and seismic potential. Morphotectonic analysis reveals spatial variability in uplift and erosion, with heightened tectonic activity in basins 4, 9–11, and 18, linked to structural complexities such as fault step-overs, bends, and abrupt topographic changes, suggesting localized strain concentration and elevated seismic potential. Field observations corroborate these findings, documenting triangular facets, V-shaped valleys, elongated basins, and fault scarps indicative of active crustal deformation. Paleoseismological raw data, taken from previously conducted studies at the Elbeyli (Düziçi) and Cona (Osmaniye) sites, identify three surface-rupturing events in the past ∼12 ka, with Bayesian-derived recurrence intervals of 4.3–4.7 kyr and interevent times of 0.3–9.1 kyr. Magnitude estimates (Mw ≤ 6.7) and slip rates (<1 mm/yr) classify the DIFZ as a moderately active fault zone. However, limited paleoseismic data from the Erzin and Payas segments constrain comprehensive hazard assessments. These findings highlight the DIFZ as a tectonic linkage between the EAFS, Dead Sea Fault, and Cyprus Arc, facilitating strain transfer across the southeastern Anatolian orogenic front. The integration of morphometric and paleoseismological approaches offers a refined framework for assessing seismic hazards in this tectonically complex region. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Physical Geography: Earth & Environment is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The D&#252;zi&#231;i–İskenderun Fault Zone (DIFZ), located within the Amanos Mountains at the intersection of the African, Arabian, and Anatolian plates, is a structurally segmented and tectonically active component of the Eastern Anatolian Fault System (EAFS). This study integrates morphotectonic analysis, paleoseismological reevaluation, and limited field observations to elucidate the DIFZ&#39;s role in deformation patterns and seismic potential. Morphotectonic analysis reveals spatial variability in uplift and erosion, with heightened tectonic activity in basins 4, 9–11, and 18, linked to structural complexities such as fault step-overs, bends, and abrupt topographic changes, suggesting localized strain concentration and elevated seismic potential. Field observations corroborate these findings, documenting triangular facets, V-shaped valleys, elongated basins, and fault scarps indicative of active crustal deformation. Paleoseismological raw data, taken from previously conducted studies at the Elbeyli (D&#252;zi&#231;i) and Cona (Osmaniye) sites, identify three surface-rupturing events in the past ∼12 ka, with Bayesian-derived recurrence intervals of 4.3–4.7 kyr and interevent times of 0.3–9.1 kyr. Magnitude estimates (Mw ≤ 6.7) and slip rates (&lt;1 mm/yr) classify the DIFZ as a moderately active fault zone. However, limited paleoseismic data from the Erzin and Payas segments constrain comprehensive hazard assessments. These findings highlight the DIFZ as a tectonic linkage between the EAFS, Dead Sea Fault, and Cyprus Arc, facilitating strain transfer across the southeastern Anatolian orogenic front. The integration of morphometric and paleoseismological approaches offers a refined framework for assessing seismic hazards in this tectonically complex region. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Progress in Physical Geography: Earth &amp; Environment is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1177/03091333261434479
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 27
        StartPage: 553
    Subjects:
      – SubjectFull: Fault zones
        Type: general
      – SubjectFull: Morphotectonics
        Type: general
      – SubjectFull: Landscapes
        Type: general
      – SubjectFull: Grabens (Geology)
        Type: general
      – SubjectFull: Paleoseismology
        Type: general
      – SubjectFull: Earthquake hazard analysis
        Type: general
    Titles:
      – TitleFull: Tectonic controls on active deformation and landscape evolution in the Amanos Mountains along the Düziçi–İskenderun Fault Zone, Eastern Anatolian Fault System.
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            NameFull: Akgün, Elif
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            NameFull: Softa, Mustafa
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            NameFull: Irfan, Mohammad
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            NameFull: Topal, Savaş
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            – D: 01
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
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            – TitleFull: Progress in Physical Geography: Earth & Environment
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