Tectonic geomorphology of a large normal fault: Akşehir fault, SW Turkey

Topal, Savaş; Keller, Edward A.; Bufe, Aaron; Koçyi̇ği̇t, Ali̇

doi:10.1016/j.geomorph.2016.01.014

Cited by 60 publications

(33 citation statements)

References 27 publications

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“…Topal et al (2016) El Hamdouni et al, 2008). H i index values that indicate high tectonic uplift rates and are characterized by convex curves are evident for catchments in segments 3 and 4, while H i values show a low rate of tectonic uplifting with concave curves in catchments 4 and 7, which are located away from the fault trace ( Figure 7; Table 2).…”

Section: Relative Tectonic Activity Based On Geomorphic Indicesmentioning

confidence: 97%

Morphotectonic analysis of the East Anatolian Fault, Turkey

Khalifa¹,

Çakır²,

Owen³

et al. 2018

Turkish J Earth Sci

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Section: Relative Tectonic Activity Based On Geomorphic Indicesmentioning

confidence: 97%

Morphotectonic analysis of the East Anatolian Fault, Turkey

Khalifa¹,

Çakır²,

Owen³

et al. 2018

Turkish J Earth Sci

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“…The Honaz Fault, which is interest in this study, is a normal dip slip fault in western Turkey has been investigated in two segments: the Karateke and Honaz segment ( Figure 1). Similar geomorphological studies segment have been carried out both on normal and strike-slip fault systems [10]- [15].…”

Section: Introductionmentioning

confidence: 78%

Determination of Relative Tectonic Activity of the Honaz Fault (SW Turkey) Using Geomorphic Indices

Topal¹,

Özkul²

2018

Pamukkale J Eng Sci

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In this study, in order to determine relative tectonic activity of the Honaz Fault, geomorphic indices such as triangular facets, drainage basin asymmetry (AF), hypsometric integral (HI), drainage basin shape (Bs), ratio of valley-floor width to valley height (Vf), and mountain front sinuosity (Smf) have been calculated. The results of the indice analysis were evaluated and then index of the relative tectonic activity (Iat) were re-evaluated. Base on the different Iat values, the results were divided into four classes that range from the relatively highest to the relatively lowest tectonic activity. The drainage basin area between Honaz Fault and Mount Honaz is an ideal place to test relative tectonic activity. The Honaz fault that is the north boundary fault of the Honaz Mountain has been divided into the Karateke segment and Honaz segment. The indice values calculated from these segments are triangular facets (Lf / Ls: 0.3-0.46), AF (32-77), HI (0.1-0.6), Vf (0.08-0.7), Bs (1.53-5.06) and Smf (1.12-1.41). The results of this study exhibit the presence of high to very high tectonic activity especially in the central part of the Honaz Fault. Based the results, the neotectonics played an important role in geomorphic evolution of this part of the Honaz Mountain. In addition to the results obtained, evidence of seismic activity, travertine occurrences due to thermal springs and alluvial fans in front of fault zones support high tectonic activity in the region.

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“…A recent example of such studies were carried out by Özkaymak and Sözbilir (2012) on the Manisa Fault Zone, which is located in the north of the Kemalpaşa Basin, by Özkaymak (2015) on the Honaz Fault, by Topal, Keller, Bufe, and Koçyiğit (2016) on the Akşehir Fault and by on the Alaşehir (Gediz) Graben. Although the Kemalpaşa Basin is one of the parts of this active system like others, there is not any study which discussed active tectonics of the Kemalpaşa Basin and the morphological development of it associated with its tectonic activity as whole in the literature.…”

Section: Regional Geology and Tectonicsmentioning

confidence: 99%

Tectonic geomorphology of the Kemalpaşa Basin and surrounding horsts, southwestern part of the Gediz Graben, Western Anatolia

Tepe

Sözbi̇li̇r

2017

Geodinamica Acta

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The Kemalpaşa Basin is one of the Quaternary basins in Western Anatolia and represents the south-western branch of the Gediz Graben system in this extensional province. This basin has been formed under the NNE-SSW trending extensional tectonic regime. It is bounded by a major fault, the Kemalpaşa Fault, in the south and it is bounded by a number of downstepping faults, called as Spildağı Fault Zone, in the north. Both margin-bounding faults of the Kemalpaşa Basin are oblique-slip normal faults. In order to better understand the activities of these faults, we investigated the tectonic geomorphology of the Kemalpaşa Basin and interpreted the effect of tectonic activity on the geomorphological evolution using geomorphic markers such as drainage basin patterns, facet geometries and morphometric indices such as hypsometric curves and integral (HI), basin shape index (B s ), valley floor width-to-height ratio (V f ) and mountain front sinuosity (S mf ). The morphometric analysis of 30 drainage basins in total and mountain fronts bounding the basin from both sides suggests a relatively high degree of tectonic activity. The mountain front sinuosity (S mf ) generally varies from 1.1 to 1.3 in both sides of the basin suggesting the active fronts and facet slopes (12°-32°) suggest a relatively high degree of activity along the both sides of the Kemalpaşa Basin. Similarly, the valley floor width-to-height ratios (V f ) obtained from the both sides indicate low values varying from 0.043 to 0.92, which are typical values (<1) for tectonically active mountain fronts. The all values obtained are lower for the southern side. Therefore, we suggest that the tectonic activity of the Kemalpaşa Fault higher than the Spildağı Fault Zone. This difference that can be arised from the different uplift rates also reveals the typical asymmetric characteristics of the Kemalpaşa Basin. Additionally, the trapezoidal facets which have been observed on the southern side of the basin indicate that the Kemalpaşa Fault is evolutionally more active as compared to the Spildağı Fault Zone. The geomorphic indices indicate that the Quaternary landscape evolution of the Kemalpaşa Basin was governed by tectonic and erosional processes, and also the all results of morphometric analysis suggest a relatively high degree of tectonic activity along the faults bounding the Kemalpaşa Basin. Moreover, considering that active large normal faults with an average 15 km long can cause major earthquake, the earthquake hazard in the Kemalpaşa Basin should be investigated in detailed paleoseismological studies.

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Tectonic geomorphology of a large normal fault: Akşehir fault, SW Turkey

Cited by 60 publications

References 27 publications

Morphotectonic analysis of the East Anatolian Fault, Turkey

Morphotectonic analysis of the East Anatolian Fault, Turkey

Determination of Relative Tectonic Activity of the Honaz Fault (SW Turkey) Using Geomorphic Indices

Tectonic geomorphology of the Kemalpaşa Basin and surrounding horsts, southwestern part of the Gediz Graben, Western Anatolia

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