40Ar–39Ar dating, whole-rock and Sr–Nd–Pb isotope geochemistry of post-collisional Eocene volcanic rocks in the southern part of the Eastern Pontides (NE Turkey): implications for magma evolution in extension-induced origin

Arslan, Mehmet; Temizel, İrfan; Abdioğlu, Emel; Kolayli, Hasan; Yücel, Cem; Boztuğ, Durmuş; Şen, Cüneyt

doi:10.1007/s00410-013-0868-3

Cited by 111 publications

(79 citation statements)

References 117 publications

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“…Different hypotheses have been suggested for the generation of the Early Cenozoic magmatism along our study areas and surrounding regions (Central and Eastern Pontides) such as slab break-off (Keskin et al, 2008), delamination (Arslan et al, 2013;Temizel et al, 2016) Göçmengil et al (2017). Assimilant values are taken from Köksal et al (2013) thickening and melting of continental crust (Topuz et al, 2005), and direct generation by a subducting lithospheric slab (Eyuboglu et al, 2016).…”

Section: Geodynamic Implicationsmentioning

confidence: 69%

“…Thus, we suggest that the trace element ratios/plots used for understanding of the evolution of the arc magmatism can also be reliable tools to investigate the presence and behavior of sedimentary melts/fluids, subduction components in mantle source areas of postcollisional magmatics. (Gülmez et al, 2013;Kasapoğlu et al, 2016) and middle Eocene volcanics from the Eastern Pontides (Kaygusuz et al, 2011;Temizel et al, 2012Temizel et al, , 2016Arslan et al, 2013;Aslan et al, 2014;Yücel et al, 2017) are also plotted. Data for lithospheric mantle array and MORB from Wilson (1989) and Gill (1981).…”

Section: Constraints On Source Of the High-k Postcollisional Magmatismmentioning

confidence: 99%

“…The vanishing of the northern branch of the Neo-Tethyan ocean during the Cretaceous and subsequent collision of the Pontides and Anatolide-Tauride microcontinents with the CACC in the Paleocene gave rise to a long and narrow ophiolitic mélange belt called the IAESZ at the northern part of the Anatolian Plate (Şengör and Yılmaz, 1981;Okay and Tüysüz, 1999) (Figure 1a). Around both sides and along this suture zone, postcollisional Eocene magmatism (particularly Middle Eocene) developed through the western to eastern part of the Anatolian Plate and is represented by granitoids (Harris et al, 1994;Genç and Yılmaz, 1997;Topuz et al, 2005;Arslan and Aslan, 2006;Okay and Satır, 2006;Karslı et al, 2007Karslı et al, , 2011Boztuğ, 2008;Karacık et al, 2008;Ustaömer et al, 2009;Altunkaynak et al, 2012;Gülmez et al, 2013;Öztürk, 2015, Özdamar et al 2017), gabbroic intrusions (Boztuğ et al, 1998;Temizel et al, 2014;Eyuboglu et al, 2016), and calcalkaline, mildly alkaline, and potassic/shoshonitic volcanic products (Figure 1b;Peccerillo and Taylor, 1976;Keskin et al, 2008 and references therein; Karslı et al, 2011, Kaygusuz et al, 2011Arslan et al, 2013 and references therein; Aydınçakır and Şen, 2013;Dokuz et al, 2013;Gülmez et al, 2013;Aslan et al, 2014;Aydınçakır, 2014, Sipahi et al, 2014Yücel et al, 2014;Kasapoğlu et al, 2016;Temizel et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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40Ar-39Ar geochronology and petrogenesis of postcollisional trachytic volcanism along the İzmir-Ankara-Erzincan Suture Zone (NE, Turkey)*

Göçmengil¹,

Karacık²,

Genç³

et al. 2018

Turkish J Earth Sci

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The obliteration of the Neo-Tethyan Ocean and collision of the microplates along the northern part of Turkey led to the development of the İzmir-Ankara-Erzincan suture zone (IAESZ). After the collision of Pontides with the Central-Anatolian Crystalline Complex (CACC) in the Paleocene, a new phase of extension and volcanism concomitantly developed along the northern (Almus; Pontides) and southern (Yıldızeli; CACC) sides and along the IAESZ during the Middle Eocene time interval. The first products of the Middle Eocene volcanism in these areas are represented by calc-alkaline to alkaline (basic-intermediate) volcanic and volcanoclastic units together with late-stage trachytic dikes, plugs, and stocks. The mantle source area of both volcanic units displays a metasomatized character, which was dominantly fluxed by sediment-sourced melts. The partial melting of the metasomatized source area gave rise to first-stage basic-intermediate volcanism in the crustal levels. Simultaneously with the generation of the first-stage volcanism, basaltic trachyandesitic shallow-seated magma mushes were also developed. The reactivation of these shallow-seated mushes by latestage extensional tectonics gave rise to the development of trachytic volcanism in both regions, which have a high-K to shoshonitic character. Almus trachytic lavas are phenocryst-poor and have differentiated Mg# numbers (avg. 26). On the other hand, Yıldızeli trachytic lavas have a broad compositional range (benmoreite to latite); they are phenocryst-rich and show more basic character (Mg# avg. 40). Trachytic volcanism in both areas is largely controlled by fractional crystallization of similar basaltic trachyandesitic parental magma with minor assimilation of the upper crustal lithologies. 40 Ar-39 Ar ages from sanidine phenocrysts from both areas also confirm that trachytic volcanism in both regions developed nearly coevally in different tectonic blocks (~41-40 Ma). Generation of similar volcanism on the different tectonic blocks during the postcollisional stage was probably governed by a regional-scale delamination and/ or lithospheric removal-related tectonomagmatic processes.

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Section: Geodynamic Implicationsmentioning

confidence: 69%

Section: Constraints On Source Of the High-k Postcollisional Magmatismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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40Ar-39Ar geochronology and petrogenesis of postcollisional trachytic volcanism along the İzmir-Ankara-Erzincan Suture Zone (NE, Turkey)*

Göçmengil¹,

Karacık²,

Genç³

et al. 2018

Turkish J Earth Sci

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“…This province is mainly represented by volcano-sedimentary rocks in the east [Arslan et al, 2013] and plutonic bodies in the west [Harris et al, 1994;.…”

Section: The Eocene Calc-alkaline Magmatic Provincementioning

confidence: 99%

“…During the Eocene, while the subduction zone migrated southward across the accreted continental blocks following the retreat of the decoupled part of the downgoing lithosphere ( figure 10), an E-W-trending magmatic province developed mainly displaying medium-to high-K calc-alkaline composition (figures 8j-n) [Harris et al, 1994;Arslan et al, 2013].…”

Section: Accepted Manuscriptmentioning

confidence: 99%