Tectonic Escape Mechanism in the Crustal Evolution of Eastern Anatolian Region (Turkey)

Elitok, Ömer; Dolmaz, M. Nuri

doi:10.5772/22295

Cited by 7 publications

(4 citation statements)

References 49 publications

(67 reference statements)

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“…The uplifting of the Central Taurides during the late Tertiary was closely associated with mountainbuilding processes in a collided continental collision zone. The collision of Africa-Arabia to the south and Eurasia to the north caused high uplift in eastern Anatolia, whereas the Anatolide-Tauride platform underwent an extensional collapse during the Oligocene-early Miocene (Şengör and Yılmaz, 1981;Şengör, 1985;Şengör et al, 1985Dewey et al, 1986;Jolivet and Faccenna, 2000;Aksu et al, 2005b;Bozkurt and Mittwede, 2005;Ring et al, 2010;Elitok and Dolmaz, 2011). The late Miocene of the region witnessed a high uplift of the mountain belt and subsidence in the foreland as a result of the slab break-off and/or the slab tear within the subducted slab beneath this region (Cosentino et al, 2012;Schildgen et al, 2012aSchildgen et al, , 2012bSchildgen et al, , 2014Cipollari et al, 2013) (Figure 7).…”

Section: Resultsmentioning

confidence: 99%

Tracking the uplift of the Bolkar Mountains (south-central Turkey): evidence from apatite fission track thermochronology

Karaoğlan¹

2016

Turkish J Earth Sci

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Section: Resultsmentioning

confidence: 99%

Tracking the uplift of the Bolkar Mountains (south-central Turkey): evidence from apatite fission track thermochronology

Karaoğlan¹

2016

Turkish J Earth Sci

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“…The neotectonic evolution of Turkey is controlled by the collision of the African and Arabian plates with the Eurasian plate along the Hellenic (Aegean) arc, and the Bitlis-Zagros suture zone (Elitok and Dolmaz, 2011). The Bitlis-Zagros suture zone extends to the Alpine-Appenine mountain belt and the Owen transform fault.…”

Section: Tectonic Evolution Of the Regionmentioning

confidence: 99%

Geology and geochemistry of Middle Eocene Maden complex ferromanganese deposits from the Elazığ–Malatya region, eastern Turkey

Şaşmaz

Türkyilmaz²,

Öztürk

et al. 2014

Ore Geology Reviews

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In the study region, the Pütürge Precambrian-Permian metamorphic rocks, the Upper Jurassic-Lower Cretaceous Guleman ophiolites, the Upper Cretaceous-Lower Eocene Hazar unit, the Campanian-Lower Maastrichtian aged Elazığ magmatics, and the Middle Eocene Maden complex crop out extensively. The Maden complex containing ferromanganese mineralization unconformably overlies the Pütürge metamorphic rocks, the Guleman ophiolites, and the Hazar unit and is unconformably overlain by Plio-Quaternary sediments. The ferromanganese (Mn-Fe) ores in the Elazığ-Malatya region, eastern Turkey, are hosted in the mudstone member of the volcano-sedimentary part of the Middle Eocene Maden complex as lenses or interbedded layers. In the Elazığ-Malatya region, Mn-Fe ores occur at eight localities, namely, Beyhan, Palu, Sarıkamış, Koçkale, Germili, Hazar, Alihan, and Kom. Mn-Fe ores are found in the Koçkale and Palu deposits as a single bed but in the Hazar and Kom deposits as two beds and in the Sarıkamış, Germili, and Alihan deposits in three levels. The thickness of these mineralized levels ranges from 0.3 m to 10 m. All the investigated mineralizations are conformable with the foot wall mudstones. Braunite, bixbyite, jacobsite, pyrolusite, manganite, and psilomelane are the main manganese oxide minerals. Hematite, barite, and pyrite are also found in variable amounts in the ferromanganese ores. The trace element content of all studied ferromanganese deposits is generally in low concentrations and tends to enrichment in the assemblage of Ba, Sr, V, Cu, Pb, Zn, and As with a geochemical characteristic similar to hydrothermal deposits. Rare earth element (REE) patterns of the Maden complex Mn-Fe deposits support a hydrothermal origin, with a slight enrichment in the middle REE (4.04-29.91 ppm, average = 16.49) and a slightly high concentration of total average = 517.85). In all the investigated deposits, REE patterns displayed negative Ce (0.08 to 0.72, average = 0.15) and Eu (0.55 to 0.82, average = 0.72) anomalies. This shows that low-temperature hydrothermal fluids played an important role in the formation of mineralization. The ore deposition is similar to that of sedimentary-exhalative mineralization, deposited within the Maden marginal basin.

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“…The Bitlis-Pütürge thrust zone and the eastern Anatolian high plateau are parts of the oceanic and continental crust that were compressed and shortened by the interaction of the Arabian and Eurasian plates. Strong strike-slip faults on the right-lateral NAFZ and the left-lateral EAFZ, which intersect at Karlıova, contribute to the westward tectonic escape of the Anatolian plate in conjunction with this collision and contraction zone (Elitok and Dolmaz 2011). The region where these two tectonic belts meet is the area of greatest stress in relation to plate movements in Turkey.…”

Section: Introductionmentioning

confidence: 99%

The estimation of seismic hazards in Eastern Turkey and its surrounding area by statistical approaches

Altınoğlu

Polat

2023

Preprint

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In this study, a complete set of 19933 earthquake data in the depth range from 1 to 30 km from 12 December 1905 to 30 September 2022 was collected and analysed by using the Gutenberg–Richter (GR) earthquake frequency magnitude relationship approach to determine b-value and completeness magnitude (Mc). The size scaling b- and a-values for the overall catalogue were estimated as 0.82 ± 0.01 and 5.452, respectively. The Mc for the entire investigated region was estimated to be equal to 1.9. The observed low b-values were most likely related to differential crustal stress and strain produced by large faults located in the study region. It means that the region is prone to destructive and massive earth-quakes with high magnitudes. Statistical seismic hazard analysis methods including Gutenberg-Richter Law (GR) and Generalized Poisson Regression (GPR) were also used to detect earthquake occurrence intervals and recurrence periods. The results indicated that the GPR model is consistent with the GR model for intermediate-magnitude earthquakes. However, this coherence between the models is not valid for big earthquakes (Mw ≥ 7). According to the GR and GPR models, the return period of a magnitude 7 earthquake is 106.83 and 94.0347 years, respectively. The models used in the study confirm the expected and Pazarcık and Elbistan earthquakes on 6 February, 2023 because this region had not produced a magnitude 7 earthquake since 1893.

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Tectonic Escape Mechanism in the Crustal Evolution of Eastern Anatolian Region (Turkey)

Cited by 7 publications

References 49 publications

Tracking the uplift of the Bolkar Mountains (south-central Turkey): evidence from apatite fission track thermochronology

Tracking the uplift of the Bolkar Mountains (south-central Turkey): evidence from apatite fission track thermochronology

Geology and geochemistry of Middle Eocene Maden complex ferromanganese deposits from the Elazığ–Malatya region, eastern Turkey

The estimation of seismic hazards in Eastern Turkey and its surrounding area by statistical approaches

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