Paleomagnetic evidence for upper plate response to a STEP fault, SW Anatolia

Kaymakçı, Nuretdin; Langereis, Cor G.; Özkaptan, Murat; Özacar, A. Arda; Gülyüz, Erhan; Uzel, Bora; Sözbi̇li̇r, Hasan

doi:10.1016/j.epsl.2018.06.022

Cited by 46 publications

(47 citation statements)

References 50 publications

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“…However, Bocchini et al (2018) reject this model from a seismicity perspective, arguing there is a clear subducting slab dipping NW to the north of Rhodes, and instead propose a very shallow tear between the two slabs. Kaymakçı et al (2018) observe a lack of differential rotations in NE directions, through a paleomagnetic approach, to come to a similar conclusion. On the surface, the meeting point between the two arcs is the Isparta Angle (Figure 1a), a tectonically complex zone experiencing a mixture of extensional and transtensional regimes (e.g., Över et al, 2016).…”

Section: Subductionmentioning

confidence: 53%

“…Kaymakçı et al. (2018) observe a lack of differential rotations in NE directions, through a paleomagnetic approach, to come to a similar conclusion. On the surface, the meeting point between the two arcs is the Isparta Angle (Figure 1a), a tectonically complex zone experiencing a mixture of extensional and transtensional regimes (e.g., Över et al., 2016).…”

Section: Introductionmentioning

confidence: 77%

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Seismic Tomographic Imaging of the Eastern Mediterranean Mantle: Implications for Terminal‐Stage Subduction, the Uplift of Anatolia, and the Development of the North Anatolian Fault

Kounoudis

Bastow

Ogden

et al. 2020

Geochem Geophys Geosyst

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The Eastern Mediterranean captures the east‐west transition from active subduction of Earth's oldest oceanic lithosphere to continental collision, making it an ideal location to study terminal‐stage subduction. Asthenospheric‐ or subduction‐related processes are the main candidates for the region's ∼2 km uplift and Miocene volcanism; however, their relative importance is debated. To address these issues, we present new P and S wave relative arrival‐time tomographic models that reveal fast anomalies associated with an intact Aegean slab in the west, progressing to a fragmented, partially continental, Cyprean slab below central Anatolia. We resolve a gap between the Aegean and Cyprean slabs, and a horizontal tear in the Cyprean slab below the Central Anatolian Volcanic Province. Below eastern Anatolia, the completely detached “Bitlis” slab is characterized by fast wave speeds at ∼500 km depth. Assuming slab sinking rates mirror Arabia‐Anatolia convergence rates, the Bitlis slab's location indicates an Oligocene (∼26 Ma) break‐off. Results further reveal a strong velocity contrast across the North Anatolian Fault likely representing a 40–60 km decrease in lithospheric thickness from the Precambrian lithosphere north of the fault to a thinned Anatolian lithosphere in the south. Slow uppermost‐mantle wave speeds below active volcanoes in eastern Anatolia, and ratios of P to S wave relative traveltimes, indicate a thin lithosphere and melt contributions. Positive central and eastern Anatolian residual topography requires additional support from hot/buoyant asthenosphere to maintain the 1–2 km elevation in addition to an almost absent lithospheric mantle. Small‐scale fast velocity structures in the shallow mantle above the Bitlis slab may therefore be drips of Anatolian lithospheric mantle.

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Section: Subductionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 77%

Seismic Tomographic Imaging of the Eastern Mediterranean Mantle: Implications for Terminal‐Stage Subduction, the Uplift of Anatolia, and the Development of the North Anatolian Fault

Kounoudis

Bastow

Ogden

et al. 2020

Geochem Geophys Geosyst

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“…The marine transgression which was extant in the region during the late Burdigalian was followed by the final advance of Lycian Nappes and caused a regional uplift during the Langhian-Tortonian (c. 7 myr) elsewhere in SW Anatolia (Becker-Platen 1970;Hakyemez and Örçen 1982;Meşhur and Akpınar 1984;Şenel et al 1989;Hakyemez 1989;Sözbilir 2005;Alçiçek 2001;Konak and Şenel 2002;İslamoğlu et al 2005 Alçiçek et al (2018) for further correlative stratigraphy of the SW Anatolian Neogene basins. For the geographic locations of these basins, see the geological maps by the MTA (The Geological Survey of Turkey, compiled by Konak and Şenel 2002, Konak 2002, Şenel 2002, Turan 2002 Kaymakçı et al (2018). Note that the SW Anatolian terrestrial basins are strongly synchronic and compatible to the lithostratigraphic Standard Profile (SP) which was initially proposed for the lithostratigraphical subdivision of entire SW Anatolian Neogene formations by Becker-Platen (1970).…”

Section: The Beyağaç Basinmentioning

confidence: 97%

“…The alluvial fan association constitutes the proximal and basal part of the basin-fill, which a b Fig. 1 a Tectonic map of the Aegean and Anatolia region showing the major tectonic structures (Bozkurt 2003;Alçiçek et al 2013a;Kaymakçı et al 2018); DTFZ, Dinar Transfer Fault Zone; ATFZ, Acıpayam Transfer Fault Zone; b Overview of the prominent extensional basins of southwestern Anatolia (based on Konak 2002, Konak and Şenel 2002, Şenel 2002, Turan 2002. The fossil localities discussed in this study are indicated.…”

Section: The çAl Basinmentioning

confidence: 99%

“…Holocene) period is characterised predominantly by degradation of topographic highs through deeply incising river erosion. Newly generated faults as well as reactivated faults are thought to have been associated with extension related to slab edge processes at the northern edge of the northwards subducting African slab below western Anatolia (Van Hinsbergen et al 2010;Biryol et al 2011;Kaymakçı et al 2018), which further accentuated the basin-andrange topography of SW Anatolia (Alçiçek et al 2005;Alçiçek 2007;Ten Veen et al 2009).…”

Section: Phase Iii-basin Dissection (Early Pleistocene)mentioning

confidence: 99%

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Reconciling the stratigraphy and depositional history of the Lycian orogen-top basins, SW Anatolia

Alçiçek

Mayda

Veen

et al. 2019

Palaeobio Palaeoenv

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Terrestrial fossil records from the SW Anatolian basins are crucial both for regional correlations and palaeoenvironmental reconstructions. By reassessing biostratigraphic constraints and incorporating new fossil data, we calibrated and reconstructed the late Neogene and Quaternary palaeoenvironments within a regional palaeogeographical framework. The culmination of the Taurides in SWAnatolia was followed by a regional crustal extension from the late Tortonian onwards that created a broad array of NE-trending orogen-top basins with synchronic associations of alluvial fan, fluvial and lacustrine deposits. The terrestrial basins are superimposed on the upper Burdigalian marine units with a c. 7 myr of hiatus that corresponds to a shift from regional shortening to extension. The initial infill of these basins is documented by a transition from marginal alluvial fans and axial fluvial systems into central shallow-perennial lakes coinciding with a climatic shift from warm/humid to arid conditions. The basal alluvial fan deposits abound in fossil macro-mammals of an early Turolian (MN11-12; late Tortonian) age. The Pliocene epoch in the region was punctuated by subhumid/humid conditions resulting in a rise of local base levels and expansion of lakes as evidenced by marsh-swamp deposits containing diverse fossil mammal assemblages indicating late Ruscinian (late MN15; late Zanclean) age. A second pulse of extension, accompanied by regional climatic This article is a contribution to the special issue "Taking the Orient Express? The role of Anatolia in Mediterranean Neogene palaeobiogeography"

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Neogene drainage evolution of SW Anatolia (Türkiye): Integration of morphotectonics, drainage and denudation analyses

van Heiningen,

Kaymakci

2024

Earth Surf Processes Landf

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This study integrates denudation analysis with morphotectonic characteristics, facies associations and drainage analysis to investigate the landscape evolution of SW Anatolia. Age‐Elevation Relationship (AER) plots of published thermochronological data from drainage divides, valleys and preserved paleo‐geomorphological landscape remnants provide insight into the region's drainage evolution. Cooling and denudation events identify the timing of divide formation, windgap formation and divide breaching, which leads to watergap formation.We have subdivided SW Anatolia into distinct morphotectonic domains. Among these, the Gediz and Büyük Menderes faults and the Selimiye Shear Zone fragmented the Menderes Metamorphic Core Complex into three each of which experienced different cooling histories based on denudation analysis utilizing various low‐temperature thermochronometers.Hypsometric integral and channel profile analyses demonstrate significant variation in landscape maturity and drainage basin modifications over time. These analyses, combined with the interpretation and mapping of windgaps, watergaps and stream deflections, as well as the depositional environments of sediments and volcanic sequences, enable the reconstruction of drainage patterns from the early Miocene to Recent.During the middle Miocene, the Sakarya drainage basin dominated central and eastern SW Anatolia, with the Gediz drainage basin being a minor part of the Küçük Menderes basin. The Büyük Menderes drainage basin, in contrast, drained the southern portion of SW Anatolia, while the Bakırçay catchment extended into the northern Gediz basin. By the late Miocene, the Sakarya drainage basin had lost a significant portion of its hinterland to the Gediz basin and several newly isolated basins, while also capturing the Burdur and Beyşehir basins, along with the mid‐ and upstream sections of the Büyük Menderes basin, thereby reducing its area by two‐thirds. In the Pliocene, the Gediz drainage basin contracted by approximately 80%, while the Büyük Menderes basin expanded to absorb the Gediz and Tavas basins. During the Quaternary, the Büyük Menderes basin further shrank by around 60% as isolated basins formed in the east. Recent tectonic activity has led to the Gediz basin recapturing parts of its upstream area, while the Büyük Menderes basin regained previously isolated sections of the Gediz basin. The Dalaman and Eşençay basins also captured upstream isolated basins, while the Burdur basin was captured by the Aksu River, isolating the Beyşehir basin from Burdur.These episodes of drainage reorganization are driven by dynamic topography, influenced by slab‐edge processes and intensified by the westward escape of the Anatolian Block. The westward motion, combined with slab‐tear‐driven vertical movements, has led to substantial reconfiguration of the drainage networks in SW Anatolia over time.

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Paleomagnetic evidence for upper plate response to a STEP fault, SW Anatolia

Cited by 46 publications

References 50 publications

Seismic Tomographic Imaging of the Eastern Mediterranean Mantle: Implications for Terminal‐Stage Subduction, the Uplift of Anatolia, and the Development of the North Anatolian Fault

Seismic Tomographic Imaging of the Eastern Mediterranean Mantle: Implications for Terminal‐Stage Subduction, the Uplift of Anatolia, and the Development of the North Anatolian Fault

Reconciling the stratigraphy and depositional history of the Lycian orogen-top basins, SW Anatolia

Neogene drainage evolution of SW Anatolia (Türkiye): Integration of morphotectonics, drainage and denudation analyses

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