Rapid Late Quaternary denudation of the Karacasu Graben in response to subsidence in the Büyük Menderes Corridor: Insights from morphotectonics and archaeogeology

Ocakoğlu, Faruk

doi:10.1016/j.geomorph.2020.107107

Cited by 9 publications

(4 citation statements)

References 60 publications

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“…tectonic uplift) (Mather et al, 2017;Meikle et al, 2010). The river terraces in extensional regions were used to explain the role of the faulting, regional uplift, and base level change (Maddy et al, 2020;Ocakoğlu, 2020). Accordingly, the river terraces in the study area are important archives recording tectonic movements and base-level changes in the region.…”

Section: River Terraces (Qrt)mentioning

confidence: 99%

The Quaternary landforms of the Büyük Menderes Graben System: the southern Menderes Massif, western Anatolia, Turkey

2020

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We present the first detailed Quaternary landform map of the Büyük Menderes Graben System, located in western Turkey which is one of the most active extensional domains in the world. The main map was produced with a combination of TanDEM-X (12.5 m resolution), Red Relief Image Map, unmanned aerial vehicle, Google Earth images, and multiple fieldworks. The main map is presented at a scale of 1:160,000 although landforms were mapped at a scale of 1:15,000. The ten Quaternary landforms were defined considering their surface morphology and depositional environment. The alluvial fans, river terraces, and floodplains are the most common landforms. The spatial pattern of the alluvial fans and river terraces showed the variable rates of tectonics and surface processes along the strike of the graben system. The distribution of the meander cut-offs and paleo-shorelines imply that Büyük Menderes Graben System is vulnerable to geohazards like flash-flood sedimentation and flood events.

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Section: River Terraces (Qrt)mentioning

confidence: 99%

The Quaternary landforms of the Büyük Menderes Graben System: the southern Menderes Massif, western Anatolia, Turkey

2020

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“…These clastic deposits interfinger with lacustrine mudstone-limestone alternations towards the center of the grabens (Açıkalın, 2005;Alçiçek, 2010;Alçiçek and Jiménez-Moreno, 2013;Becker-Platen, 1971;Kastelli, 1972;Nebert, 1955;Ocakoğlu et al, 2014). Axial fluvial system deposits and alluvial fans of the modern graben infill cover the older units with a regional unconformity, which are deeply incised by the drainage system (Ocakoğlu et al, 2015).…”

Section: Bozdoğan and Karacasu Grabensmentioning

confidence: 99%

Tectonic geomorphology of Bozdoğan and Karacasu grabens, western Anatolia

Özsayın

Dirik

Ocakoğlu

et al. 2023

GeA

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Western Anatolia is one of the most rapidly extending and seismically active regions in the world. The circa N-S extension since the Early Miocene caused the formation of E-W trending major grabens and intervening horsts, having earthquake potentials with magnitude ≥5. The E-W oriented Büyük Menderes graben cross-cuts the broadly N-S oriented Bozdoğan and Karacasu grabens, of which the boundary faults of the latter are the source of seismic activity. Geomorphic indices, including drainage basin asymmetry, mountain front sinuosity, valley-floor width to valley height ratio, stream length-gradient index and normalized channel steepness index, were used to evaluate the boundary fault segments of the Bozdoğan and Karacasu grabens. The results indicate that both grabens are tectonically active and therefore regions of earthquake potential, consistent with the epicenters of earthquakes. Thus, it can be inferred that fault segments of second-order grabens, which are crosscut by the boundary faults of seismically active main depressions, are apparently reactivated by ongoing tectonism and may represent seismic activity. This suggestion applies also for similar basins located in the western Anatolia.

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“…1 A). Quaternary extension led to the formation of E–W oriented horst and grabens delimited by normal faults, which is part of the Menderes Massif Metamorphic Core Complex 32 , 33 . The Central Menderes Massif is located at the center of this rapid N–S extension and the massif is subdivided to three-part into the northern Bozdağ and the southern Aydın Range which are separated by the Küçük Menderes Graben and bound by the Gediz and Büyük Menderes grabens in the north and south, respectively.…”

Section: Study Areamentioning

confidence: 99%

Three-dimensional control of alluvial fans by rock uplift in an extensional regime: Aydın Range, Aegean extensional province

Özpolat

Yıldırım

Görüm

et al. 2022

Sci Rep

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Tectonics imparts a first-order control on the overall morphology of alluvial fan systems in extensional settings by influencing sediment flux and accommodation space, while other factors such as climate, catchment lithology, and fault footwall characteristics are secondary. Previous alluvial fan modeling studies have focused on the link between the three-dimensional development of alluvial fans and rock uplift, however, despite the potential influence of tectonics on the overall three-dimensional morphology of alluvial fans, the controlling mechanisms, as well as their relative importance, remain largely unquantified in a natural setting with a targeted source-to-sink approach. Here, we examine 45 alluvial fans and their catchments along the southern mountain front of the Aydın Range, delimited by segmented normal faults in the western Anatolia Extensional Province, to quantify the role of rock uplift. We quantify river incision rates and catchment-wide erosion rates together with a series of topographic analyses across the southern flank of the Aydın Range as a proxy for rock uplift. Our results indicate that the spatial distribution of thicker and steeper alluvial fans fit well with higher rock uplift rates along the strike of the mountain front. In contrast, a lower uplift rate is responsible for prograding alluvial fans with decreasing thickness and gradients. Also, our data shows that alluvial fan thickness compared to other alluvial fan metrics strongly associated with the pattern of the rock uplift. This study demonstrates a field-based, quantitative linkage between three-dimensional alluvial fan morphology and rock uplift which has significant implications for improving alluvial fan models and understanding how alluvial fans respond to tectonics in extensional regions.

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Rapid Late Quaternary denudation of the Karacasu Graben in response to subsidence in the Büyük Menderes Corridor: Insights from morphotectonics and archaeogeology

Cited by 9 publications

References 60 publications

The Quaternary landforms of the Büyük Menderes Graben System: the southern Menderes Massif, western Anatolia, Turkey

The Quaternary landforms of the Büyük Menderes Graben System: the southern Menderes Massif, western Anatolia, Turkey

Tectonic geomorphology of Bozdoğan and Karacasu grabens, western Anatolia

Three-dimensional control of alluvial fans by rock uplift in an extensional regime: Aydın Range, Aegean extensional province

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