Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey

Aldanmaz, Ercan; Pearce, Julian A.; Thirlwall, M. F.; Mitchell, J. G.

doi:10.1016/s0377-0273(00)00182-7

Cited by 955 publications

(564 citation statements)

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“…The illites in this study have similar mineralogical and geochemical properties to hydrothermal illites from several deposits around the world. The Siyako et al, 1989;Okay et al, 1990) and radiometric ages of volcanic and plutonic rocks and alteration related mineralizations (Ercan et al, 1995;Aldanmaz et al, 2000, Yigit, 2012. Table 6.…”

Section: Resultsmentioning

confidence: 99%

“…Plutonic rocks (granite, syenite, granodiorite, quartz monzonite, quartz monzodiorite) appeared in the Late Cretaceous and continued through the Eocene, Oligocene and into the early Miocene (Birkle and Satir, 1995;Yilmaz et al, 2001). The radiometric ages of volcanic rocks in the region are mainly from K/Ar (Ercan et al, 1995;Aldanmaz et al, 2000) and some Ar/Ar dating (Ece et al, 2008) from different areas dispersed between Gökçeada to Edremit (Fig. 1b).…”

Section: Geological Frameworkmentioning

confidence: 98%

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Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: Implications for the age and origin of fluids

Bozkaya

Uysal

et al. 2016

Ore Geology Reviews

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Section: Resultsmentioning

confidence: 99%

Section: Geological Frameworkmentioning

confidence: 98%

Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: Implications for the age and origin of fluids

Bozkaya

Uysal

et al. 2016

Ore Geology Reviews

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“…Twenty-five lavas were sampled in the volcanic center of Dikili, which was described in detail by Karacik et al [2007], with ages of 15-18 Ma [Borsi et al, 1972;Benda et al, 1974;Aldanmaz et al, 2000]. Finally, 17 lavas were sampled in the Yuntdağ volcanic region (Figure 2).…”

Section: Samplingmentioning

confidence: 99%

“…[8] These metamorphic domains are surrounded and overlain by volcanic and sedimentary rocks [Aldanmaz et al, 2000;Beck et al, 2001;Gürsoy et al, 2003;Emre and Sözbilir, 2007;Ersoy and Helvaci, 2007;Karacik et al, 2007;Çiftçi and Bozkurt, 2009b;Dilek and Altunkaynak, 2009], which are particularly suitable for paleomagnetic analysis. Recently, van Hinsbergen et al [2010] recalibrated the timing and dimension of vertical axis rotations in the Bey Dağları region to the southeast of the Menderes Massif, studied earlier by Poisson [1986, 1987] and Morris and Robertson [1993], and showed that this region experienced no rotation between the late Cretaceous and middle Miocene, followed by ∼20°counterclockwise rotation between 16 and 5 Ma.…”

Section: Hinsbergen Et Al: Exhumation With a Twistmentioning

confidence: 99%

“…From east to west, these include the Uşak, Güre, Selendi, Demirci, and Gördes basins, which hereafter will be referred to as the NMM basins. They are filled with terrestrial sediments and contain both felsic and mafic volcanic deposits [Aldanmaz et al, 2000;Ersoy et al, 2008;Dilek and Altunkaynak, 2009].…”

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

confidence: 99%

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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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Postcollisional lithospheric evolution of the Southeast Carpathians: Comparison of geodynamical models and observations

2016

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Seismic evidence and thermal and topographic transients have led to the interpretation of lithospheric removal beneath the Southeast Carpathians region. A series of numerical geodynamic experiments in the context of the tectonic evolution of the region are conducted to test the surface-crustal response to lithosphere delamination and slab break-off. The results show that a delamination-type removal ("plate-like" migrating instability) causes a characteristic pattern of surface uplift/subsidence and crustal extension/shortening to occur due to the lithospheric deformation and dynamic/thermal forcing of the sublithospheric mantle. These features migrate with the progressive removal of the underlying lithosphere. Model results for delamination are comparable with observables related to the geodynamic evolution of the Southeast Carpathians since 10 Ma: the mantle structure inferred by seismic tomography, migrating patterns of uplift (>1.5 km) and subsidence (>2 km) in the region, crustal thinning in the Carpathian hinterland and thickening at the Focsani depression, and regional extension in the Carpathian corner (e.g., opening of Brasov basin) correlating with volcanism (e.g., Harghita and Persani volcanics) in the last 3 Myr.

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Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey

Cited by 955 publications

References 53 publications

Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: Implications for the age and origin of fluids

Illite occurrences related to volcanic-hosted hydrothermal mineralization in the Biga Peninsula, NW Turkey: Implications for the age and origin of fluids

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

Postcollisional lithospheric evolution of the Southeast Carpathians: Comparison of geodynamical models and observations

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