Alpine high-P/low-T metamorphism of the Afyon Zone and implications for the metamorphic evolution of Western Anatolia, Turkey

Candan, Osman; Çetinkaplan, Mete; Oberhänsli, Roland; Rimmelé, Gaëtan; Akal, Cüneyt

doi:10.1016/j.lithos.2005.02.005

Cited by 144 publications

(112 citation statements)

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“…As a result of this obduction event, the buried northern Tauride margin underwent HP-LT metamorphism forming the Tavşanlı then the Afyon-Ören units (figure 10) [Okay, 1986[Okay, , 2002Candan et al, 2005;Plunder et al, 2013;Pourteau et al, 2013]. At the same time, HT-MP metamorphism was recorded in the overriding plate (i.e.…”

Section: Accepted M Manuscriptmentioning

confidence: 98%

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Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

2016

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Section: Accepted M Manuscriptmentioning

confidence: 98%

“…Another HP-LT metamorphic event was then recorded in the underlying Afyon and Ören units between 70 and 65 Ma [Rimmelé et al, 2003a[Rimmelé et al, , 2006Candan et al, 2005;Pourteau et al, 2010Pourteau et al, , 2013. These HP-LT metamorphic units were subsequently exhumed, reaching the surface in the Eocene [Özcan et al, 1988].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

2016

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“…Part of the pre-Oligocene thrust slices is now exposed in the Lycian Nappes, a megaklippe that overlies the Menderes Massif to the south, which is correlatable to the units overlying the Menderes Massif to the north Robertson, 1998, 2003;Candan et al, 2005] including the Afyon zone and the Bornova flysch north of Izmir and east of Lesbos [Okay and Altiner, 2007].…”

Section: Hinsbergen Et Al: Exhumation With a Twist Tc3009 Tc3009mentioning

confidence: 99%

Exhumation with a twist: Paleomagnetic constraints on the evolution of the Menderes metamorphic core complex, western Turkey

et al. 2010

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Much remains to be understood about the links between regional vertical axis rotations, continental extension, and shortening. In western Turkey, Miocene vertical axis rotations have been reported that occur simultaneously with the extensional exhumation of the Menderes metamorphic core complex, which has been related to back‐arc extension in the eastern part of the Aegean back arc. In this paper we explore the spatial and temporal relationships between vertical axis rotations in southwestern Turkey and extensional unroofing of the Menderes Massif. To this end, we provide a large set of new paleomagnetic data from western Turkey, and integrate these with the regional structural evolution to test the causes and consequences of oroclinal bending in the Aegean region. The Lycian Nappes and Bey Dağları are shown to rotate ∼20° between 16 and 5 Ma, defining the eastern limb of the Aegean orocline. This occurred contemporaneously with the exhumation of the central Menderes Massif (along extensional detachments) and after the latest Oligocene to early Miocene exhumation of the northern and southern Menderes massifs. Exhumation of the latter two was not associated with vertical axis rotations. The lower Miocene volcanics in the region from Lesbos to Uşak, to the north of the central Menderes Massif underwent a small clockwise rotation, insignificant with respect to Eurasia. This shows that exhumation of the central Menderes Massif was associated with a vertical axis rotation difference between the northern and southern Menderes massifs of ∼25°–30°. This result is in excellent agreement with the angle defined by the trends of Büyük Menderes and Alaşehir detachments, as well as the angle defined by the regionally curving stretching lineation pattern across the central Menderes Massif. These structures define a pivot point (rotation pole) for the west Anatolian rotations. The rotation of the southern domain, including the southern Menderes Massif, the Lycian Nappes, and Bey Dağları, must have led to N–S contraction east of this pole. The eastern limit of the rotating domain is formed by the transpressional couple of the Aksu thrust and Kırkkavak Fault in the center of the Isparta angle. Previously reported clockwise rotations in the volcanic fields near Afyon may be the result of distributed N–S shortening east of the pivot point. The precise accommodation of this shortening history remains open for investigation. Late Oligocene to early Miocene extension in the eastern part of the Aegean back arc was NE–SW oriented and likely bounded by a discrete transform. This transform may be associated with an early evolution of the eastern Aegean subduction transform edge propagator fault. Oroclinal bending in the west Anatolian region is likely related to a reconnection of the eastern part of the Aegean orocline with the African northward moving plate in tandem with roll back in the Aegean back arc, comparable to a recently postulated scenario for western Greece.

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“…A general tectonic division consisting of Pontides with Laurasian affinity to the north and Anatolite-Tauride Block to the south, which are separated by İzmir-Ankara-Erzincan suture zone representing the Late Cretaceous to Eocene closure of northern branch of Neotethys is suggested for Turkey (Candan, Çetinkaplan, Oberhänsli, Rimmelé, & Akal, 2005;Ketin, 1966;Okay et al, 1996;Şengör & Yılmaz, 1981;Figure 2(a)). The Anatolide-Tauride Block represents the easternmost extension of Apulia.…”

Section: Introductionmentioning

confidence: 99%

Late Neoproterozoic granulite facies metamorphism in the Menderes Massif, Western Anatolia/Turkey: implication for the assembly of Gondwana

Koralay

2015

Geodinamica Acta

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The Menderes Massif is a major polymetamorphic complex in Western Turkey. The late Neoproterozoic basement consists of partially migmatized paragneisses and metapelites in association with orthogneiss intrusions. Pelitic granulite, paragneiss and orthopyroxene-bearing orthogneiss (charnockite) of the basement series form the main granulite-facies lithologies. Charnockitic metagranodiorite and metatonalite are magnesian in composition and show calc-alkalic to alkali-calcic affinities. Nd and Sr isotope systematics indicate homogeneous crustal contamination. The zircons in charnockites contain featureless overgrowth and rim textures representing metamorphic growth on magmatic cores and inherited grains. Charnockites yield crytallization age of~590 Ma for protoliths and they record granulite-facies overprint at~580 Ma. These data indicate that the Menderes Massif records late Neoproterozoic magmatic and granulite-facies metamorphic events. Furthermore, the basement rocks have been overprinted by Eocene Barrovian-type Alpine metamorphism at~42 Ma. The geochronological data and inferred latest Neoproterozoic-early Cambrian palaeogeographic setting for the Menderes Massif to the north of present-day Arabia indicate that the granulite-facies metamorphism in the Menderes Massif can be attributed to the Kuunga Orogen (600-500 Ma) causing the final amalgamation processes for northern part of the Gondwana.

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Alpine high-P/low-T metamorphism of the Afyon Zone and implications for the metamorphic evolution of Western Anatolia, Turkey

Cited by 144 publications

References 46 publications

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

Exhumation with a twist: Paleomagnetic constraints on the evolution of the Menderes metamorphic core complex, western Turkey

Late Neoproterozoic granulite facies metamorphism in the Menderes Massif, Western Anatolia/Turkey: implication for the assembly of Gondwana

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