Quaternary bimodal volcanism in the Niğde Volcanic Complex (Cappadocia, central Anatolia, Turkey): age, petrogenesis and geodynamic implications

Aydin, Faruk; Schmitt, Axel K.; Siebel, Wolfgang; Sönmez, Mustafa; Ersoy, E. Yalçın; Lermi, Abdurrahman; Dirik, Kadir; Duncan, Robert A.

doi:10.1007/s00410-014-1078-3

Cited by 65 publications

(68 citation statements)

References 108 publications

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“…The Hf isotope data presented here are the first for Central Anatolian lavas, and the Pb and Nd isotope results significantly expand the number of existing data (Figure ; supporting information Table S2) [ Deniel et al ., ; Şen et al ., ; Aydin et al ., ]. Hafnium and Nd isotope compositions in Hasan Monogenetic Cluster basalts are generally more radiogenic than bulk‐earth values (mostly positive ε Hf and ε Nd values), correlate positively, and define a trend that diverges from the mantle array toward the isotopic compositions of many Tethyan sediments from the eastern Mediterranean (Figure a inset) [ Klaver et al ., ].…”

Section: Resultsmentioning

confidence: 99%

“…The Cyprean and Arabian slabs are, however, too deep (>200 km), or missing altogether, for normal orogenic magmagenesis [ Pearce et al ., ; Notsu et al ., ; Biryol et al ., ]. Contributions from an intraplate source have also been identified, mainly on the basis of rare alkaline basalts [ Güçtekin and Köprübaşi , ; Aydin , ], secular changes in geochemistry [ Deniel et al ., ; Aydin et al ., ], or chemical heterogeneity exhibited by basalts [ Şen et al ., ; Kuscu and Geneli , ]. Volcanic rocks may therefore be derived from mantle that was subduction‐modified prior to Africa‐Arabia‐Eurasia collision, either by (1) direct melting of thermally remobilized mantle lithosphere under the influence of lithospheric extension and/or upwelling mantle or by (2) interaction between more deeply derived melts and either crustal or (metasomatized) mantle domains in the lithosphere.…”

Section: Geologic Settingmentioning

confidence: 99%

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Shallow melting of MORB‐like mantle under hot continental lithosphere, Central Anatolia

Reid

Schleiffarth

Cosca

et al. 2017

Geochem Geophys Geosyst

111

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Widespread mafic volcanism, elevated crustal temperatures, and plateau‐type topography in Central Anatolia, Turkey, could collectively be the result of lithospheric delamination, mantle upwelling, and tectonic escape. We use results from 40Ar/39Ar geochronology, basalt geochemistry, and a passive‐source broadband seismic experiment obtained in a collaborative international effort (Continental Dynamics‐Central Anatolia Tectonics) to investigate the upper mantle structure and evolution of melting conditions over an ∼2400 km2 area south and west of Hasan volcano. New 40Ar/39Ar dates for the basalts mostly cluster between 0.2 and 0.6 Ma, but some scoria cones are as old as 2.5 Ma. Basalts are dominantly Mg‐rich (Mg# = 62–71), moderately alkaline (normative Ne < 5 wt %), and, based on major and trace element signatures, derived from a peridotitic source. Covariations between radiogenic isotope and trace element signatures reveal contributions from a subduction‐related component and intraplate‐like mantle asthenosphere, as well as from ambient upper mantle. Central Anatolian basalts reflect maximum mantle potential temperatures of <1350°C and an average pressure of melt equilibration of 1.4 GPa, which are cooler and shallower than for basalts from Eastern and Western Anatolia. When considered in light of regionally slow upper mantle shear wave velocities, the mantle lithosphere may be thin and infiltrated by melts, or largely absent. An absence of secular changes in melting conditions suggests little to no lithospheric thinning over the past ∼1 Ma, despite evidence for lithospheric extension. Hasan basalts appear to be generated by decompression melting in response to the rollback of the Cyprean slab.

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Section: Resultsmentioning

confidence: 99%

Section: Geologic Settingmentioning

confidence: 99%

Shallow melting of MORB‐like mantle under hot continental lithosphere, Central Anatolia

Reid

Schleiffarth

Cosca

et al. 2017

Geochem Geophys Geosyst

111

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“…New dates from basaltic lavas that form a basement to the Meso-Hasandağ sequences lead to reconsider this chronology. In the area where the NW part of the Keçiboyduran volcano meets the NE part of the KHD, a basaltic basement has been Ar/Ar dated near Kitreli village to 654 ± 24 ka (south of Mahmutlu cone: Aydın et al 2014), and 543 ± 12 ka under the Kitreli cones (K/Ar age: Doğan-Kulahcı et al 2018). Both basements pertain to the Keçiboyduran volcano that rises close to the Hasandağ in this area (Figs.…”

Section: Volcano Edification Phasesmentioning

confidence: 99%

“…Using these new dates (e.g. Aydın et al 2014;Schmitt et al 2014;Doğan-Kulahcı et al 2018; this study) and together with stratigraphic reconstructions and content of some pyroclastitic deposits, we intend here to re-evaluate the geomorphological evolution of the Hasandağ (Emre 1991). Aydar (1992) and Aydar and Gourgaud (1998) published a geological reconstruction of the edification phases of the Hasandağ based on very detailed examination of units Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Since then, publications have enlarged our knowledge about the compositional series (from basalt to rhyolite) forming the volcano (e.g. Deniel et al 1998;Aydın et al 2014;di Guiseppe et al 2018;Doğan-Kulahcı et al 2018;Rabayrol et al 2019) and also about their chronology (e.g. Kuzucuoğlu et al 1998;Aydın et al 2014;Schmitt et al 2014;Reid et al 2017;Doğan-Kulahcı et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Geomorphology and tephrochronology review of the Hasandağ volcano (southern Cappadocia, Turkey)

et al. 2020

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This research proposes a suite of volcanic events that took part in the edification of the double-peaked Hasandağ stratovolcano in southern Cappadocia. Inter-correlations of sections dispatched along geographic transects across the volcano evidence continuities/discontinuities and stratigraphic relationships using key layers identified through this process which is, later, framed by a radiometric dating control of some of these formations. The main goal is to provide some chronological markers of the geomorphological evolution of the volcano. The stratigraphy, lithology and facies, the landform definitions and new dates provide information about eruption types and their role in shaping the morphologies of the volcano through time. Recent ages from literature and seven new K/Ar dates contribute in enriching the story of the volcanic activity that built the Hasandağ stratovolcano landforms. The part of the story exposed in this article starts mainly c. 700/650 ka ago with the construction of a Mid-Pleistocene volcano. Later, between 220 and 120 ka ago, main events occurred in the NE part of the volcano. After an initial Plinian eruption, a caldera collapse is recorded by pumice flows. Close to the emission point, a small collapse structure is today filled with a much younger dacite flow. After the Plinian eruption, the partial destruction of a volcano caused one or two avalanches containing several meters-thick distinct blocks that flew north c. 16-18 km over the roof of the Cappadocian Miocene ignimbrites. Remains of the destructed volcano flanks are not visible. Either they are buried below younger lava flows forming the Küçük Hasandağ cone, or a seism in the Tuz Gölü Fault Zone during the avalanche may have resulted in an explosion. This event was followed by extrusion of rhyolitic domes positioned on the caldera rim, emitting pumice falls now filling-in the Güvercin valley stream down to Ihlara village. During Late Pleistocene emission of andesite and dacite flows and domes, accompanied by several pyroclastic flows formed today's terminal cones of the stratovolcano.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Evidence for 1.5 km of Uplift of the Central Anatolian Plateau's Southern Margin in the Last 450 kyr and Implications for Its Multiphased Uplift History

et al. 2018

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At the southern margin of the Central Anatolian Plateau (CAP), marine deposits that overlie the Central Tauride units at up to 2 km of elevation were used to constrain the onset of uplift to the middle‐late Miocene. This study demonstrates that much younger marine deposits cap the southern margin. We recognize the Last Common Occurrence of Neogloboquadrina spp. (sin) (0.61 Ma) and Pseudoemiliania lacunosa (0.467 Ma), which points to an early middle Pleistocene age. The benthic fauna indicates an epibathyal marine environment (400 to 500 m paleodepth), with an associated paleocoastline now at ~1,500 to 1,600 m above sea level. Our new results imply uplift rates of up to 3.21–3.42 mm/yr for the CAP southern margin since the deposition of the young marine units. In the area, the evaluation of late Pleistocene and Holocene uplift rates of ~1 mm/yr points to a post early middle Pleistocene short‐lived period of rapid uplift of the CAP southern margin, which can correlate the short‐lived surface uplift signal in numerical models of slab breakoff. Overall, this work demonstrates that the majority of the modern topography at the CAP southern margin (1,500 to 1,600 m) was only recently acquired, pointing to the absence of a significant orographic barrier along the southern plateau margin prior to 500 ka. The multiphased uplift recognized at the CAP southern margin by previous authors, as well as the fast uplift rate documented in this work, can be linked to lithosphere delamination and subsequent slab breakoff during the Arabian‐Anatolian continental collision.

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Quaternary bimodal volcanism in the Niğde Volcanic Complex (Cappadocia, central Anatolia, Turkey): age, petrogenesis and geodynamic implications

Cited by 65 publications

References 108 publications

Shallow melting of MORB‐like mantle under hot continental lithosphere, Central Anatolia

Shallow melting of MORB‐like mantle under hot continental lithosphere, Central Anatolia

Geomorphology and tephrochronology review of the Hasandağ volcano (southern Cappadocia, Turkey)

Evidence for 1.5 km of Uplift of the Central Anatolian Plateau's Southern Margin in the Last 450 kyr and Implications for Its Multiphased Uplift History

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