Menderes Massif (Western Turkey): structural, metamorphic and magmatic evolution - a synthesis

Bozkurt, Erdi̇n; Oberhänsli, Roland

doi:10.1007/s005310000173

Cited by 241 publications

(125 citation statements)

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“…the Main Menderes Metamorphism), except in its southern part where HP-LT metamorphism was recorded (i.e. the Kurudere-Nebiler unit, figures 8l-n and 10) [Şengör et al, 1984;Bozkurt and Oberhänsli, 2001;Okay, 2001;Rimmelé et al, 2003bRimmelé et al, , 2005Whitney et al, 2008;Pourteau et al, 2013].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Metamorphism (figure 5) [Akkök, 1983;Şengör et al, 1984;Bozkurt and Oberhänsli, 2001;Lips et al, 2001;Okay, 2001]. Oligocene migmatites crop out in the northern Menderes massif, suggesting a HT event following the Main Menderes Metamorphism [Catlos and Çemen, 2005;Bozkurt et al, 2010], while the rest of the massif experienced greenschist-facies metamorphism [Hetzel et al, 1995a;Bozkurt and Oberhänsli, 2001].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Oligocene migmatites crop out in the northern Menderes massif, suggesting a HT event following the Main Menderes Metamorphism [Catlos and Çemen, 2005;Bozkurt et al, 2010], while the rest of the massif experienced greenschist-facies metamorphism [Hetzel et al, 1995a;Bozkurt and Oberhänsli, 2001]. Exhumation of the northern Menderes massif was accommodated by the top-to-the N Simav detachment, which displays a minimum offset of ~50 km up to the late Miocene (i.e.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Further south, Oligocene-early Miocene exhumation of MCCs mainly in greenschist-facies conditions occurred in the Cyclades and the Menderes massif [Altherr et al, 1982;Lister et al, 1984;Gautier and Brun, 1994;Jolivet et al, 1994;Bozkurt and Oberhänsli, 2001;Vanderhaeghe and Teyssier, 2001;Ring et al, , 2010Catlos and Çemen, 2005;Jolivet & Brun, 2010], associated with additional HT-MP metamorphism affecting the northern Menderes massif and the central Cyclades in the Oligocene and early Miocene, respectively (figures 8n-r and 11) [Jansen and Schuiling, 1976;Lister et al, 1984;Gautier et al, 1993;Keay et al, 2001;Catlos and Çemen, 2005;Duchêne et al, 2006;Bozkurt et al, 2010;Beaudoin et al, 2015]. In the Cyclades, the NCDS accommodated this exhumation since the Oligocene (figures 9 and 11) [Faure et al, 1991;Lee and Lister, 1992;Brichau et al, 2007Brichau et al, , 2008Jolivet et al, 2010a] while the NPEFS and the WCDS became active in the early Miocene [Urai et al, 1990;Gautier et al, 1993;Vanderhaeghe, 2004;Brichau et al, 2006;Seward et al, 2009;Iglseder et al, 2011;Grasemann et al, 2012].…”

Section: Back-arc Extension In the Cyclades And Western Anatoliamentioning

confidence: 99%

“…Ring et al, 1999b;Bozkurt & Oberhänsli, 2001;Gessner et al, 2001aGessner et al, , 2013Jolivet et al, 2004b]. Following this accretionary event, this massif has been exhumed in a back-arc extensional context, forming a dome-like structure [e.g.…”

Section: Successive Metamorphic Events In the Menderes Massifmentioning

confidence: 99%

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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 Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Back-arc Extension In the Cyclades And Western Anatoliamentioning

confidence: 99%

Section: Successive Metamorphic Events In the Menderes Massifmentioning

confidence: 99%

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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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Kinematics of Late Cretaceous subduction initiation in the Neo‐Tethys Ocean reconstructed from ophiolites of Turkey, Cyprus, and Syria

et al. 2017

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Formation of new subduction zones represents one of the cornerstones of plate tectonics, yet both the kinematics and geodynamics governing this process remain enigmatic. A major subduction initiation event occurred in the Late Cretaceous, within the Neo‐Tethys Ocean between Gondwana and Eurasia. Suprasubduction zone ophiolites (i.e., emerged fragments of ancient oceanic lithosphere formed at suprasubduction spreading centers) were generated during this subduction event and are today distributed in the eastern Mediterranean region along three ~E‐W trending ophiolitic belts. Several models have been proposed to explain the formation of these ophiolites and the evolution of the associated intra‐Neo‐Tethyan subduction zone. Here we present new paleospreading directions from six Upper Cretaceous ophiolites of Turkey, Cyprus, and Syria, calculated by using new and published paleomagnetic data from sheeted dyke complexes. Our results show that ~NNE‐SSW subduction zones were formed within the Neo‐Tethys during the Late Cretaceous, which we propose were part of a major step‐shaped subduction system composed of ~NNE‐SSW and ~WNW‐ESE segments. We infer that this subduction system developed within old (Triassic?) lithosphere, along fracture zones and perpendicular weakness zones, since the Neo‐Tethyan spreading ridge formed during Gondwana fragmentation would have already been subducted at the Pontides subduction zone by the Late Cretaceous. Our new results provide an alternative kinematic model of Cretaceous Neo‐Tethyan subduction initiation and call for future research on the mechanisms of subduction inception within old (and cold) lithosphere and the formation of metamorphic soles below suprasubduction zone ophiolites in the absence of nearby spreading ridges.

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Constraints on Water Reservoir Lifetimes From Catchment‐Wide ¹⁰Be Erosion Rates—A Case Study From Western Turkey

Heineke

Hetzel

Akal

et al. 2017

Water Resources Research

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The functionality and retention capacity of water reservoirs is generally impaired by upstream erosion and reservoir sedimentation, making a reliable assessment of erosion indispensable to estimate reservoir lifetimes. Widely used river gauging methods may underestimate sediment yield, because they do not record rare, high‐magnitude events and may underestimate bed load transport. Hence, reservoir lifetimes calculated from short‐term erosion rates should be regarded as maximum values. We propose that erosion rates from cosmogenic 10Be, which commonly integrate over hundreds to thousands of years, are useful to complement short‐term sediment yield estimates and should be employed to estimate minimum reservoir lifetimes. Here we present 10Be erosion rates for the drainage basins of six water reservoirs in Western Turkey, which are located in a tectonically active region with easily erodible bedrock. Our 10Be erosion rates for these catchments are high, ranging from ∼170 to ∼1,040 t/km2/yr. When linked to reservoir volumes, they yield minimum reservoir lifetimes between 25 ± 5 and 1,650 ± 360 years until complete filling, with four reservoirs having minimum lifespans of ≤110 years. In a neighboring region with more resistant bedrock and less tectonic activity, we obtain much lower catchment‐wide 10Be erosion rates of ∼33 to ∼95 t/km2/yr, illustrating that differences in lithology and tectonic boundary conditions can cause substantial variations in erosion even at a spatial scale of only ∼50 km. In conclusion, we suggest that both short‐term sediment yield estimates and 10Be erosion rates should be employed to predict the lifetimes of reservoirs.

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Menderes Massif (Western Turkey): structural, metamorphic and magmatic evolution - a synthesis

Cited by 241 publications

References 59 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

Kinematics of Late Cretaceous subduction initiation in the Neo‐Tethys Ocean reconstructed from ophiolites of Turkey, Cyprus, and Syria

Constraints on Water Reservoir Lifetimes From Catchment‐Wide ¹⁰Be Erosion Rates—A Case Study From Western Turkey

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Menderes Massif (Western Turkey): structural, metamorphic and magmatic evolution - a synthesis

Cited by 241 publications

References 59 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

Kinematics of Late Cretaceous subduction initiation in the Neo‐Tethys Ocean reconstructed from ophiolites of Turkey, Cyprus, and Syria

Constraints on Water Reservoir Lifetimes From Catchment‐Wide 10Be Erosion Rates—A Case Study From Western Turkey

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Constraints on Water Reservoir Lifetimes From Catchment‐Wide ¹⁰Be Erosion Rates—A Case Study From Western Turkey