@article{SchefflerImmenhauserPourteauetal.2019,
  author    = {Scheffler, Franziska and Immenhauser, Adrian and Pourteau, Amaury and Natalicchio, Marcello and Candan, Osman and Oberh{\"a}nsli, Roland},
  title     = {A lost Tethyan evaporitic basin},
  series = {Sedimentology : the journal of the International Association of Sedimentologists},
  volume    = {66},
  journal   = {Sedimentology : the journal of the International Association of Sedimentologists},
  number    = {7},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {0037-0746},
  doi       = {10.1111/sed.12606},
  pages     = {2627 -- 2660},
  year      = {2019},
  abstract  = {Ancient evaporite deposits are geological archives of depositional environments characterized by a long-term negative precipitation balance and bear evidence for global ocean element mass balance calculations. Here, Cretaceous selenite pseudomorphs from western Anatolia ('Rosetta Marble') — characterized by their exceptional morphological preservation — and their 'marine' geochemical signatures are described and interpreted in a process-oriented context. These rocks recorded Late Cretaceous high-pressure/low-temperature, subduction-related metamorphism with peak conditions of 1·0 to 1·2 GPa and 300 to 400°C. Metre-scale, rock-forming radiating rods, now present as fibrous calcite marble, clearly point to selenitic gypsum as the precursor mineral. Stratigraphic successions are recorded along a reconstructed proximal to distal transect. The cyclical alternation of selenite beds and radiolarian ribbon-bedded cherts in the distal portions are interpreted as a two type of seawater system. During arid intervals, shallow marine brines cascaded downward into basinal settings and induced precipitation. During more humid times, upwelling-induced radiolarian blooms caused the deposition of radiolarite facies. Interestingly, there is no comparable depositional setting known from the Cenozoic world. Meta-selenite geochemical data (δ13C, δ18O and 87Sr/86Sr) plot within the range of reconstructed middle Cretaceous seawater signatures. Possible sources for the 13C-enriched (mean 2·2 per mille) values include methanogenesis, gas hydrates and cold seep fluid exhalation. Spatially resolved component-specific analysis of a rock slab displays isotopic variances between meta-selenite crystals (mean δ13C 2·2 per mille) and host matrix (mean δ13C 1·3 per mille). The Cretaceous evaporite-pseudomorphs of Anatolia represent a basin wide event coeval with the Aptian evaporites of the Proto-Atlantic and the pseudomorphs share many attributes, including lateral distribution of 600 km and stratigraphic thickness of 1·5 to 2·0 km, with the evaporites formed during the younger Messinian salinity crisis. The Rosetta Marble of Anatolia may represent the best-preserved selenite pseudomorphs worldwide and have a clear potential to act as a template for the study of meta-selenite in deep time.},
  language  = {en}
}
@misc{JolivetFaccennaHuetetal.2013,
  author    = {Jolivet, Laurent and Faccenna, Claudio and Huet, Benjamin and Labrousse, Loic and Le Pourhiet, Laetitia and Lacombe, Olivier and Lecomte, Emmanuel and Burov, Evguenii and Denele, Yoann and Brun, Jean-Pierre and Philippon, Melody and Paul, Anne and Salaue, Gwenaelle and Karabulut, Hayrullah and Piromallo, Claudia and Monie, Patrick and Gueydan, Frederic and Okay, Aral I. and Oberh{\"a}nsli, Roland and Pourteau, Amaury and Augier, Romain and Gadenne, Leslie and Driussi, Olivier},
  title     = {Aegean tectonics strain localisation, slab tearing and trench retreat},
  series = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  volume    = {597},
  journal   = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0040-1951},
  doi       = {10.1016/j.tecto.2012.06.011},
  pages     = {1 -- 33},
  year      = {2013},
  abstract  = {We review the geodynamic evolution of the Aegean-Anatolia region and discuss strain localisation there over geological times. From Late Eocene to Present, crustal deformation in the Aegean backarc has localised progressively during slab retreat. Extension started with the formation of the Rhodope Metamorphic Core Complex (Eocene) and migrated to the Cyclades and the northern Menderes Massif (Oligocene and Miocene), accommodated by crustal-scale detachments and a first series of core complexes (MCCs). Extension then localised in Western Turkey, the Corinth Rift and the external Hellenic arc after Messinian times, while the North Anatolian Fault penetrated the Aegean Sea. Through time the direction and style of extension have not changed significantly except in terms of localisation. The contributions of progressive slab retreat and tearing, basal drag, extrusion tectonics and tectonic inheritance are discussed and we favour a model (I) where slab retreat is the main driving engine, (2) successive slab tearing episodes are the main causes of this stepwise strain localisation and (3) the inherited heterogeneity of the crust is a major factor for localising detachments. The continental crust has an inherited strong heterogeneity and crustal-scale contacts such as major thrust planes act as weak zones or as zones of contrast of resistance and viscosity that can localise later deformation. The dynamics of slabs at depth and the asthenospheric flow due to slab retreat also have influence strain localisation in the upper plate. Successive slab ruptures from the Middle Miocene to the late Miocene have isolated a narrow strip of lithosphere, still attached to the African lithosphere below Crete. The formation of the North Anatolian Fault is partly a consequence of this evolution. The extrusion of Anatolia and the Aegean extension are partly driven from below (asthenospheric flow) and from above (extrusion of a lid of rigid crust).},
  language  = {en}
}
@article{WenzelMertzOberhaenslietal.1997,
  author    = {Wenzel, T. and Mertz, D. and Oberh{\"a}nsli, Roland and Becker, Thomas and Penne, P.},
  title     = {Age, geodynamic setting, and mantle enrichment processes of a K-rich intrusion from the Meissen massif (northern Bohemian massif) and implications for related occurrences from the mid-European Hecynian},
  year      = {1997},
  language  = {en}
}
@article{CandanCetinkaplanOberhaenslietal.2005,
  author    = {Candan, O. and Cetinkaplan, Mete and Oberh{\"a}nsli, Roland and Rimmele, Gaetan and Akal, Cemal B.},
  title     = {Alpine high-P/low-T metamorphism of the Afyon Zone and implications for the metamorphic evolution of Western Anatolia, Turkey},
  issn      = {0024-4937},
  year      = {2005},
  abstract  = {Carpholite+chloritoid+pyrophyllite association occurs widely in the Triassic metaclastic rocks of the Afyon Zone in west-central Turkey. Fe-Mg-carpholite is associated with rare aragonite pseudomorphs and glaucophane in marbles and metabasites, respectively. The Afyon Zone consists stratigraphically of a Pan-African basement and an overlying Mesozoic cover sequence. The Pan-African basement, which shows Barrovian-type amphibolite-facies metamorphism, comprises garnet-mica schists, intruded by sodic amphibole-bearing metagabbros and leucocratic metagranites. It is unconformably overlain by a continuous metasedimentary sequence extending from Triassic to early Palaeocene. This cover sequence begins with metaconglomerates, which pass upwards into phyllites. Fe-Mg-carpholite occurs within this metaclastic sequence as rosette-like crystals in metapelites and fibres in quartz segregations. The metaclastic rocks are succeeded by metamorphosed platform carbonates, grading into Latest Mesozoic metamorphosed pelagic limestones, which in turn progress up to a Late Mesozoic-Early Tertiary olistostrome. This sequence is tectonically overlain by the blueschists of the Tavsanh Zone. Fe-Mg-carpholite-bearing assemblages imply temperatures of about 350 degrees C and minimum pressures of 6-9 kbar, corresponding to burial depths of about 30 km for the Mesozoic passive continental margin sediments and the underlying Pan-African supracrustal metasediments and metaintrusives. The metamorphic rocks of the Afyon Zone are unconformably overlain by Upper Palaeocene-Lower Eocene sedimentary rocks, indicating a Paleocene age for the regional HP/LT metamorphism. This implies continuous younging of HP/LT metamorphism in the Anatolides related to northward subduction of the Anatolide-Tauride platform beneath the Sakarya Zone. From north to south this involved the Tavsanh Zone (Campanian, 80 +/- 5 Ma), the Afyon Zone (Palaeocene?), the Menderes Massif (Middle Eocene) and the Lycian Nappes (Late Cretaceous-Eocene?), all of which were probably derived from the frontal part of the Anatolide-Tauride platform. (c) 2005 Elsevier B.V. All rights reserved},
  language  = {en}
}
@article{DuesterhoeftBousquetWichuraetal.2012,
  author    = {D{\"u}sterh{\"o}ft, Erik and Bousquet, Romain and Wichura, Henry and Oberh{\"a}nsli, Roland},
  title     = {Anorogenic plateau formation The importance of density changes in the lithosphere},
  series = {Journal of geophysical research : Solid earth},
  volume    = {117},
  journal   = {Journal of geophysical research : Solid earth},
  publisher = {American Geophysical Union},
  address   = {Washington},
  issn      = {2169-9313},
  doi       = {10.1029/2011JB009007},
  pages     = {13},
  year      = {2012},
  abstract  = {Away from active plate boundaries the relationships between spatiotemporal variations in density and geothermal gradient are important for understanding the evolution of topography in continental interiors. In this context the classic concept of the continental lithosphere as comprising three static layers of different densities (upper crust, lower crust, and upper mantle) is not adequate to assess long-term changes in topography and relief in regions associated with pronounced thermal anomalies in the mantle. We have therefore developed a one-dimensional model, which is based on thermodynamic equilibrium assemblage computations and deliberately excludes the effects of melting processes like intrusion or extrusions. Our model calculates the "metamorphic density" of rocks as a function of pressure, temperature, and chemical composition. It not only provides a useful tool for quantifying the influence of petrologic characteristics on density, but also allows the modeled "metamorphic" density to be adjusted to variable geothermal gradients and applied to different geodynamic environments. We have used this model to simulate a scenario in which the lithosphere-asthenosphere boundary is subjected to continuous heating over a long period of time (130 Ma), and demonstrate how an anorogenic plateau with an elevation of 1400 m can be formed solely as a result of heat transfer within the continental lithosphere. Our results show that, beside dynamic topography (of asthenospheric origin), density changes within the lithosphere have an important impact on the evolution of anorogenic plateaus.},
  language  = {en}
}
@article{CandanDoraOberhaenslietal.1997,
  author    = {Candan, O. and Dora, O. and Oberh{\"a}nsli, Roland and {\"O}lsner, F. and D{\"u}rr, S.},
  title     = {Blueschist relics in the Mesozoic cover series of the Menderes Massif and correlations with Samos Island, Cyclades},
  year      = {1997},
  language  = {en}
}
@article{CandanAkalKoralayetal.2016,
  author    = {Candan, O. and Akal, C. and Koralay, O. E. and Okay, A. I. and Oberh{\"a}nsli, Roland and Prelevic, D. and Mertz-Kraus, R.},
  title     = {Carboniferous granites on the northern margin of Gondwana, Anatolide-Tauride Block, Turkey - Evidence for southward subduction of Paleotethys},
  series = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  volume    = {683},
  journal   = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0040-1951},
  doi       = {10.1016/j.tecto.2016.06.030},
  pages     = {349 -- 366},
  year      = {2016},
  abstract  = {Carboniferous metagranites with U-Pb zircon crystallization ages of 331-315 Ma crop out in the Afyon zone in the northern margin of the Anatolide-Tauride Block, which is commonly regarded as part of Gondwana during the Late Palaeozoic. They are peraluminous, calc-alkaline and are characterized by increase in Rb and Ba, decrease in Nb-Ta, and enrichment in Sr and high LILE/HFSE ratios compatible with a continental arc setting. The metagranites intrude a metasedimentary sequence of phyllite, metaquartzite and marble; both the Carboniferous metagranites and metasedimentary rocks are overlain unconformably by Lower Triassic metaconglomerates, metavolcanics and Upper Triassic to Cretaceous recrystallized limestones. The low-grade metamorphism and deformation occurred at the Cretaceous-Tertiary boundary. There is no evidence for Carboniferous deformation and metamorphism in the region. Carboniferous arc-type granites and previously described Carboniferous subduction-accretion complexes on the northern margin of the Anatolide-Tauride Block suggest southward subduction of Paleotethys under Gondwana during the Carboniferous. Considering the Variscan-related arc granites in Pelagonian and Sakarya zones on the active southern margin of Laurasia, a dual subduction of Paleotethys can be envisaged between Early Carboniferous and Late Permian. However, the southward subduction was short-lived and by the Late Permian the Gondwana margin became passive. (C) 2016 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@article{OberhaensliBousquetGoffe2003,
  author    = {Oberh{\"a}nsli, Roland and Bousquet, Romain and Goffe, B.},
  title     = {Comment to "Chloritoid composition and formation in the eastern Central Alps : a comparison between Penninic and Helvetic occurrences" by M. Rahn, M. Steinmann and M. Frey},
  issn      = {0036-7699},
  year      = {2003},
  language  = {en}
}
@article{JolivetRimmeleOberhaenslietal.2004,
  author    = {Jolivet, L. and Rimmele, Gaetan and Oberh{\"a}nsli, Roland and Goffe, B. and Candan, O.},
  title     = {Correlation of syn-orogenic tectonic and metamorphic events in the Cyclades, the Lycian nappes and the Menderes massif : Geodynamic implications},
  issn      = {0037-9409},
  year      = {2004},
  abstract  = {The recent discovery of HP-LT parageneses in the basal unit of the Lycian nappes and in the Mesozoic cover of the Menderes massif leads us to reconsider and discuss the correlation of this region with the nearby collapsed Hellenides in the Aegean domain. Although similarities have long been pointed Out by various authors, a clear correlation has not yet been proposed and most authors insist more on differences than similarities. The Menderes massif is the eastern extension of the Aegean region but it has been less severely affected by the Aegean extension during the Oligo-Miocene. It would thus be useful to use the structure of the Menderes massif as an image of the Aegean region before a significant extension has considerably reduced its crustal thickness. But the lack of correlation between the two regions has so far hampered Such comparisons. We describe the main tectonic units and metamorphic events in the two regions and propose a correlation. We then show possible sections of the two regions before the Aegean extension and discuss the involvement of continental basement in the Hellenic accretionary complex. In our interpretation the Hellenic- Tauric accretionary complex was composed of stacked basement and cover units which underwent variable P-T histories. Those which were not exhumed early enough later followed a high-T evolution which led to partial melting in the Cyclades during post-orogenic extension. Although the Menderes massif contains a larger volume of basement units it does not show significant evidence for the Oligo-Miocene migmatites observed in the center of the Cyclades suggesting that crustal partial melting is strictly related to post-orogenic extension in this case},
  language  = {en}
}
@article{WawrzenitzRomerOberhaenslietal.2006,
  author    = {Wawrzenitz, Nicole and Romer, Rolf L. and Oberh{\"a}nsli, Roland and Dong, Shuwen},
  title     = {Dating of subduction and differential exhumation of UHP rocks from the Central Dabie Complex (E-China) : constraints from microfabrics, Rb-Sr and U-Pb isotope systems},
  doi       = {10.1016/j.lithos.2005.12.001},
  year      = {2006},
  abstract  = {The correlation of deformation fabrics and metamorphic reactions with geochronologic data of UHP metamorphic rocks demonstrate that the multistage subduction and exhumation history of the Central Dabie Complex requires rapid subduction and rapid initial exhumation. Moreover, these data show that volume diffusion is not the major resetting mechanism of radiogenic isotope systems. Thus, our age data do not simply reflect a thermal/cooling history. In the investigated section, the maximum age for UHP is given by the 244 +/- 3 Ma (2 sigma) U-Pb age of a pre-UHP titanite phenocryst that survived UHP metamorphism and subsequent tectonometamorphic events. A minimum age for UHP is set by the 238 +/- 1 Ma (2 sigma) U-238-Pb-206 mineral isochron age of titanite and cogenetic epidote. These minerals formed from local partial melts during ascent and their age suggests fast exhumation and emplacement in the middle crust. In the period of ca. 238-218 Ma, the UHP terrain records HT metamorphism, local partial melting, and extensive pervasive strain below the eclogite (jd+grt) stability field. Exhumation was polyphase with a first phase of fast exhumation, succeeded by episodes of HT metamorphism and concomitant deformation at deep/mid crustal level between 238 and 218 Ma. Slow exhumation related to the final emplacement of tectonic units along greenschist facies shear zones did not cease before ca. 209-204 Ma. The resetting and homogenization of radiogenic isotope systems were aided by dissolution precipitation creep, which was the dominant deformation mechanism in quartz-feldspar rocks, in combination with fluid influx. (c) 2005 Elsevier B.V. All rights reserved},
  language  = {en}
}
@article{OberhaensliBousquetCandanetal.2012,
  author    = {Oberh{\"a}nsli, Roland and Bousquet, Romain and Candan, Osman and Okay, Aral I.},
  title     = {Dating subduction events in East Anatolia, Turkey},
  series = {Turkish journal of earth sciences = T{\"u}rk yerbilimleri dergisi},
  volume    = {21},
  journal   = {Turkish journal of earth sciences = T{\"u}rk yerbilimleri dergisi},
  number    = {1},
  publisher = {T{\"u}bitak},
  address   = {Ankara},
  issn      = {1300-0985},
  doi       = {10.3906/yer-1006-26},
  pages     = {1 -- 17},
  year      = {2012},
  abstract  = {Metamorphic studies in the cover sequences of the Bitlis complex allow the thermal evolution of the massif to be constrained using metamorphic index minerals. Regionally distributed metamorphic index minerals such as glaucophane, carpholite, relics of carpholite in chloritoid-bearing schists and pseudomorphs after aragonite in marbles record a LT-HP evolution:This demonstrates that the Bitlis complex was subducted and stacked to form a nappe complex during the closure of the Neo-Tethys. During late Cretaceous to Cenozoic evolution the Bitlis complex experienced peak metamorphism of 1.0-1.1 GPa at 350-400 degrees C. During the retrograde evolution temperatures remained below 460 degrees C. Ar-39/Ar-40 dating of white mica in different parageneses from the Bitlis complex reveals a 74-79 Ma (Campanian) date of peak metamorphism and rapid exhumation to an almost isothermal greenschist stage at 67-70 Ma (Maastrichtian). The HP Eocene flysch escaped the greenschist facies stage and were exhumed under very cold conditions. These single stage evolutions contrast with the multistage evolution reported further north from the Amassia-Stepanavan Suture in Armenia. Petrological investigations and isotopic dating show that the collision of Arabia with Eurasia resulted in an assemblage of different blocks derived from the northern as well as from the southern plate and a set of subduction zones producing HP rocks with diverse exhumation histories.},
  language  = {en}
}
@article{Oberhaensli2020,
  author    = {Oberh{\"a}nsli, Roland},
  title     = {Deep-time Digital Earth (DDE) the first IUGS big science program},
  series = {Journal of the Geological Society of India},
  volume    = {95},
  journal   = {Journal of the Geological Society of India},
  number    = {3},
  publisher = {Springer India},
  address   = {New Delhi},
  issn      = {0016-7622},
  doi       = {10.1007/s12594-020-1420-5},
  pages     = {223 -- 226},
  year      = {2020},
  language  = {en}
}
@article{JolivetGoffeBousquetetal.1998,
  author    = {Jolivet, L. and Goffe, B. and Bousquet, Romain and Oberh{\"a}nsli, Roland and Michard, Andre},
  title     = {Detachments in high-pressure mountain belts, Tethyan examples},
  year      = {1998},
  language  = {en}
}
@article{OberhaensliWendtGoffeetal.1999,
  author    = {Oberh{\"a}nsli, Roland and Wendt, A. S. and Goffe, B. and Michard, Andre},
  title     = {Detrital chromites in metasediments of East-Arabian continental margin in te Saih Hatat area : constraints for the palaeogeographic setting of the Hawasina and Semail basins (Oman Mountains)},
  year      = {1999},
  language  = {en}
}
@article{KoziolOberhaensli1995,
  author    = {Koziol, M. and Oberh{\"a}nsli, Roland},
  title     = {Die s{\"u}dliche Eklogitzone im {\"O}tztal},
  year      = {1995},
  language  = {de}
}
@article{BousquetOberhaensli1997,
  author    = {Bousquet, Romain and Oberh{\"a}nsli, Roland},
  title     = {Distribution of HP-LT metamorphism and extensional deformation in the "B{\"u}ndnerschiefer" of the Engadine window (eastern Central Alps) : Implication of regional evolution},
  year      = {1997},
  language  = {en}
}
@article{AkalCandanKoralayetal.2012,
  author    = {Akal, C{\"u}neyt and Candan, Osman and Koralay, O. Ersin and Oberh{\"a}nsli, Roland and Chen, Fukun and Prelevic, Dejan},
  title     = {Early Triassic potassic volcanism in the Afyon Zone of the Anatolides/Turkey - implications for the rifting of the Neo-Tethys},
  series = {International journal of earth sciences},
  volume    = {101},
  journal   = {International journal of earth sciences},
  number    = {1},
  publisher = {Springer},
  address   = {New York},
  issn      = {1437-3254},
  doi       = {10.1007/s00531-011-0654-2},
  pages     = {177 -- 194},
  year      = {2012},
  abstract  = {Afyon Zone, which was derived from the Anatolide-Tauride platform during closure of the Neo-Tethys, is made up of pre-Mesozoic basement and unconformably overlying Triassic-Early Tertiary cover series. The Afyon Zone contains widespread metavolcanic rocks, which are dominated by rhyolite, dacite, and trachyandesite. They form a distinct volcanic succession, which is separated from the underlying Silurian-Lower Carboniferous metacarbonates and meta-siliciclastics by a regional unconformity. Trachyandesitic metavolcanics are made up of massive lava flows, pyroclastics and epiclastics, less frequently, domes and dikes, which were developed on a deeply eroded subaerial landmass. U/Pb and Pb/Pb zircon geochronology yielded Lower Triassic (similar to 250 Ma) ages, which are interpreted as extrusion age of trachyandesitic volcanics. Based on the stratigraphic, geochronological, and geochemical data, we suggest that these Lower Triassic magmatic rocks represent an extensional tectonic setting on the northern active margin of the Gondwana, which led to the development of the northern branch of the Neo-Tethys.},
  language  = {en}
}
@article{OberhaensliCandanDoraetal.1997,
  author    = {Oberh{\"a}nsli, Roland and Candan, O. and Dora, O. and D{\"u}rr, S.},
  title     = {Eclogites within the Menderes Massif / western Turkey},
  year      = {1997},
  language  = {en}
}
@article{WichuraBousquetOberhaenslietal.2010,
  author    = {Wichura, Henry and Bousquet, Romain and Oberh{\"a}nsli, Roland and Strecker, Manfred and Trauth, Martin H.},
  title     = {Evidence for middleUocene uplift of the East African Plateau},
  issn      = {0091-7613},
  doi       = {10.1130/G31022.1},
  year      = {2010},
  abstract  = {Cenozoic uplift of the East African Plateau has been associated with fundamental climatic and environmental changes in East Africa and adjacent regions. While this influence is widely accepted, the timing and the magnitude of plateau uplift have remained unclear. This uncertainty stems from the lack of datable, geomorphically meaningful reference horizons that could record surface uplift. Here, we document the existence of significant relief along the East African Plateau prior to rifting, as inferred from modeling the emplacement history of one of the longest terrestrial lava flows, the similar to 300-km-long Yatta phonolite flow in Kenya. This 13.5 Ma lava flow originated on the present-day eastern Kenya Rift flank, and utilized a riverbed that once routed runoff from the eastern rim of the plateau. Combining an empirical viscosity model with subsequent cooling and using the Yatta lava flow geometry and underlying paleotopography (slope angle), we found that the prerift slope was at least 0.2 degrees, suggesting that the lava flow originated at a minimum elevation of 1400 m. Hence, high paleotopography in the Kenya Rift region must have existed by at least 13.5 Ma. We infer from this that middle Miocene uplift occurred, which coincides with the two-step expansion of grasslands, as well as important radiation and speciation events in tropical Africa.},
  language  = {en}
}
@article{SaddiqiPoupeauMichardetal.1995,
  author    = {Saddiqi, O. and Poupeau, G. and Michard, Andre and Groffe, B. and Oberh{\"a}nsli, Roland},
  title     = {Exhumation des roches metamorphiques HP-BT d'Oman : datation par traces de fission sur zircons},
  year      = {1995},
  language  = {fr}
}
@article{RimmeleParraGoffeetal.2005,
  author    = {Rimmele, Gaetan and Parra, T. and Goffe, B. and Oberh{\"a}nsli, Roland and Jolivet, L. and Candan, O.},
  title     = {Exhumation paths of high-pressure-low-temperature metamorphic rocks from the Lycian Nappes and the Menderes Massif (SW Turkey) : a multi-equilibrium approach},
  issn      = {0022-3530},
  year      = {2005},
  abstract  = {The Menderes Massif and the overlying Lycian Nappes occupy an extensive area of SW Turkey where high-pressure- low-temperature metamorphic rocks occur. Precise retrograde P-T paths reflecting the tectonic mechanisms responsible for the exhumation of these high-pressure-low-temperature rocks can be constrained with multi-equilibrium P-T estimates relying on local equilibria. Whereas a simple isothermal decompression is documented for the exhumation of high-pressure parageneses from the southern Menderes Massif, various P-T paths are observed in the overlying Karaova Formation of the Lycian Nappes. In the uppermost levels of this unit, far from the contact with the Menderes Massif, all P-T estimates depict cooling decompression paths. These high-pressure cooling paths are associated with top-to-the-NNE movements related to the Akcakaya shear zone, located at the top of the Karaova Formation. This zone of strain localization is a local intra-nappe contact that was active in the early stages of exhumation of the high-pressure rocks. In contrast, at the base of the Karaova Formation, along the contact with the Menderes Massif, P-T calculations show decompressional heating exhumation paths. These paths are associated with severe deformation characterized by top-to-the-east shearing related to a major shear zone (the Gerit shear zone) that reflects late exhumation of high-pressure parageneses under warmer conditions},
  language  = {en}
}
@article{OberhaensliPartzschCandanetal.2000,
  author    = {Oberh{\"a}nsli, Roland and Partzsch, Julius and Candan, O. and Cetinkaplan, Mete},
  title     = {First occurrence of Fe-Mg-carpholite documenting a high pressure metamorphism in the metasediments of the Lycian nappes, SW Turkey},
  year      = {2000},
  language  = {en}
}
@article{ZakariadzeKarpenkoBazylevetal.1998,
  author    = {Zakariadze, G. S. and Karpenko, S. F. and Bazylev, B. A. and Adamia, S. A. and Oberh{\"a}nsli, Roland and Solov'eva, N. V. and Ljialikov, A. V.},
  title     = {Fragments of Pan-African paleooceanic complexes in the Dzirula salient of the Transcaucassian crystalline massif (petroloy, geochemistry, Sm-Nd age, problems of origin)},
  year      = {1998},
  language  = {en}
}
@article{BazylevZakariadzeZhelyazkovaPanayotovaetal.1998,
  author    = {Bazylev, B. A. and Zakariadze, G. S. and Zhelyazkova-Panayotova, M. D. and Solov'eva, N. V. and Oberh{\"a}nsli, Roland},
  title     = {Genetic diversity of ophiolite ultramafics from the crystalline basement of Rhodope massif},
  year      = {1998},
  language  = {en}
}
@article{KronerOberhaensliMezgeretal.1998,
  author    = {Kroner, Alfred and Oberh{\"a}nsli, Roland and Mezger, Klaus and Teklay, M.},
  title     = {Geochemistry, Pb-Pb single zircon ages and Nd-Sr isotope composition of Precambrian rocks from southern and eastern Ethiopia: implications for crustal evolution in east Africa},
  year      = {1998},
  language  = {en}
}
@article{AltenbergerOberhaensliSteinetal.2001,
  author    = {Altenberger, Uwe and Oberh{\"a}nsli, Roland and Stein, Eckehard and Moghni, Mohsen},
  title     = {Geochemistry, tectonic setting and geodynamic position of late orogenic dikes in the Melibocus Massiv, Bergstraesser Odenwald},
  year      = {2001},
  language  = {en}
}
@article{OmraniMoazzenOberhaensli2018,
  author    = {Omrani, Hadi and Moazzen, Mohssen and Oberh{\"a}nsli, Roland},
  title     = {Geodynamic evolution of the Sabzevar zone, northern central Iranian micro-continent},
  series = {Mineralogy and petrology},
  volume    = {112},
  journal   = {Mineralogy and petrology},
  number    = {1},
  publisher = {Springer},
  address   = {Wien},
  issn      = {0930-0708},
  doi       = {10.1007/s00710-017-0505-3},
  pages     = {65 -- 83},
  year      = {2018},
  abstract  = {The Northern Central Iranian Micro-continent (CIM) represents Neotethys-related oceanic crust remnants, emplaced due to convergence between CIM and Eurasia plates during Eocene. Mafic and ultramafic units are exposed along the northern part of the CIM in the Sabzevar area. The geology and field relation of Sabzevar ophiolite indicate northward subduction of the Sabzevar basin. The average whole rock chemistry of mafic (gabbros) and ultramafic samples (lherzolite, harzburgite and dunite) is characterized by a range of MgO of 11.16-31.88, CaO 5.22-11.53 and Al2O3 2.77-14.57, respectively. Low LREE/HREE ratio of ultramafic samples is accompanied by enrichment of large ion lithophile elements (LILE) such as Sr, Pb and K. Mafic samples show two distinct groups with low and high LREE/HREE ratios. The spider diagram of mafic samples indicates enrichment in Sr, Pb and K and depletion in REE. Petrological and geochemical evidence and field relations show that the mafic rocks formed in a supra-subduction zone setting. Petrological studies reveal the role of fractional crystallization and assimilation effect by released fluids during subduction related generation of the Sabzevar mafic rocks. We suggest that the studied mafic rocks likely represent the basement of an initial island arc, which was generated in a supra-subduction zone setting within the Neotethys branch of the Sabzevar Ocean at the north of CIM. Copper, gold and chromite mineralizations are studied in relation to island arc setting and supra-subduction environment. Similarities in lithology, ophiolite age and mineralization between Sabzevar ophiolite and Bardaskan-Torbat Heydariyeh ophiolites testify for their separation due to rotation (or faulting) of the Central Iranian Micro-continent.},
  language  = {en}
}
@article{AkalKoralayCandanetal.2011,
  author    = {Akal, Cuneyt and Koralay, O. Ersin and Candan, Osman and Oberh{\"a}nsli, Roland and Chen, Fukun},
  title     = {Geodynamic significance of the early triassic karaburun granitoid (Western Turkey) for the opening history of Neo-Tethys},
  series = {Turkish journal of earth sciences = T{\"u}rk yerbilimleri dergisi},
  volume    = {20},
  journal   = {Turkish journal of earth sciences = T{\"u}rk yerbilimleri dergisi},
  number    = {3},
  publisher = {T{\"u}bitak},
  address   = {Ankara},
  issn      = {1300-0985},
  doi       = {10.3906/yer-1008-1},
  pages     = {255 -- 271},
  year      = {2011},
  abstract  = {The Karaburun Peninsula, which is considered part of the Anatolide-Tauride Block of Turkey, contains clastic and carbonate sequences deposited on the northern margin of Gondwana. The Palaeozoic clastic sequence, which is intruded by the Early Triassic granitoid and tectonically overlies a Mesozoic melange sequence, can be divided into three subunits: a lower clastic subunit consisting of a sandstone-shale alternation, an upper clastic subunit consisting of black chert-bearing shales, sandstone and conglomerate, and a Permo-Carboniferous carbonate subunit. The lower Triassic Karaburun I-type granitoid has a high initial Sr-87/Sr-86 ratio (0.709021-0.709168), and low Nd-143/Nd-144 ratio (0.512004-0.512023) and epsilon Nd (-5.34 to -5.70) isotopic values. Geochronological data indicate a crystallization (intrusion) age of 247.1 +/- 2.0 Ma (Scythian). Geochemically, the acidic magmatism reflects a subduction-related continental-arc basin tectonic setting, which can be linked to the opening of the northern branch of Neo-Tethys as a continental back-arc rifting basin on the northern margin of Gondwana. This can be related to the closure through southward subduction of the Palaeotethys Ocean beneath Gondwana.},
  language  = {en}
}
@article{RettingerSchorscherOberhaensli1996,
  author    = {Rettinger, Rolf and Schorscher, H. D. and Oberh{\"a}nsli, Roland},
  title     = {Geothermobarometric correlation of geothermobarometers and petrogenetic modelling in Ne-Quadrilatero Ferrifero, Minas Gerais, Brazil},
  year      = {1996},
  language  = {en}
}
@article{SakiMiriOberhaensli2020,
  author    = {Saki, Adel and Miri, Mirmohammad and Oberh{\"a}nsli, Roland},
  title     = {High temperature - low pressure metamorphism during subduction of Neo-Tethys beneath the Iranian plate},
  series = {Mineralogy and petrology},
  volume    = {114},
  journal   = {Mineralogy and petrology},
  number    = {6},
  publisher = {Springer},
  address   = {Wien [u.a.]},
  issn      = {0930-0708},
  doi       = {10.1007/s00710-020-00721-z},
  pages     = {539 -- 557},
  year      = {2020},
  abstract  = {Subduction of Neo-Tethys oceanic lithosphere beneath the Iranian plate during the Mesozoic formed several igneous bodies of ultramafic to intermediate and felsic composition. Intrusion of these magmas into a regional metamorphic sequence (the Sanandaj-Sirjan Zone) caused partial melting and formation of migmatites with meta-pelitic protoliths. The Alvand complex (west Iran) is a unique area comprising migmatites of both mafic and pelitic protoliths. In this area, the gabbroic rocks contain veins of leucosome at their contact with pyroxenite and olivine gabbro. These leucosomes are geochemically and mineralogically different from leucosomes of the meta-pelitic migmatites and clearly show properties of I-type granites. Microscopic observations and whole rock compositions of the mafic migmatite leucosomes show that migmatization occurred through partial melting of biotite, hornblende and plagioclase. Thermobarometric calculations indicate 800 degrees C and 3.7 kbar for partial melting, although phase diagram modeling demonstrates that the presence of water could decrease the solidus temperature by about 40 degrees C. Our results suggest an asthenospheric magma upwelling as the source of heat for partial melting of the gabbroic rock during subduction of Neo-Tethys oceanic crust under the western edge of the Iranian plate. The present study also reveals relationships between migmatization and formation of S- and I -type granites in the area.},
  language  = {en}
}
@article{Oberhaensli2013,
  author    = {Oberh{\"a}nsli, Roland},
  title     = {High-Pressure - Low-temperature evolution in the Indus-Tsangpo suture along the Kohistan Arc (Kaghan Valley, NE Pakistan)},
  series = {Episodes : journal of international geosciences},
  volume    = {36},
  journal   = {Episodes : journal of international geosciences},
  number    = {2},
  publisher = {Geological Society of India},
  address   = {Bangalore},
  issn      = {0705-3797},
  pages     = {87 -- 93},
  year      = {2013},
  abstract  = {North of Naran in the Kaghan Valley (NE Pakistan), the metabasites of the melange units lying below the Kohistan Arc, contain glaucophane. Typically they reflect blueschist-metamorphic conditions (0.7 GPa, 400 degrees C). Associated graphite-rich metapelites with quartz veins underwent upper greenschist to amphibolite conditions. Near Naran we observed in quartz grains of type 3 veins first minute relics of Fe-Mg carpholite indicating earlier blueschist metamorphic conditions. P-T estimates indicate 1.2-1.6 GPa at 380-410 degrees C, pressure and temperature values typical for blueschist metamorphic conditions. Changes in mineral assemblages and abundant sudoite component in associated chlorite point to a pressure drop after peak I conditions. We assign the observed changes to peak I conditions occurring during a Cretaceous subduction event. Temperatures estimated with Raman graphite-thermometry clearly indicate a significant subsequent rise of post-peak I temperatures up to 500 degrees C. This is compatible with the amphibolite peak II assigned to the Tertiary continental collision that leads to subduction of the Indian Plate and ultra-high-pressure metamorphism. During subduction the blueschist metamorphic metapelites underwent dehydration, which caused alteration in the overlying lithospheric mantle. In a hydrated lithospheric mantle density is significantly reduced which enhanced subduction of continental crust in the Higher Himalaya. This P-T evolution is typical for a collision orogen with a high plateau but remarkably contrasting findings from Eastern Anatolia, where plateau building is in "statu nascendi" (e.g., Oberh{\"a}nsli et al., 2010).},
  language  = {en}
}
@article{KeyserTsaiIizukaetal.2016,
  author    = {Keyser, William and Tsai, Chin-Ho and Iizuka, Yoshiyuki and Oberh{\"a}nsli, Roland and Ernst, W. G.},
  title     = {High-pressure metamorphism in the Chinshuichi area, Yuli belt, eastern Taiwan},
  series = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  volume    = {692},
  journal   = {Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0040-1951},
  doi       = {10.1016/j.tecto.2015.09.012},
  pages     = {191 -- 202},
  year      = {2016},
  abstract  = {Tectonic blocks and slabs of mafic-ultramafic rocks are distributed discontinuously in the Yuli metamorphic belt of Taiwan. The blocks include rare omphacite metagabbros and gamet-epidote blueschists in the Wanjung and Juisui (Tamayen) areas, respectively. Such high-pressure (HP) mineral assemblages have been attributed to a mid-Miocene subduction event. However, the surrounding psammitic, pelitic and chloritic schists are the dominant greenschist-facies lithologies of the Yuli belt. In the Chinshuichi area, tectonic blocks are enclosed in garnet-bearing metapelites, suggesting elevated pressures. In this area, we recently discovered meta-plagiogranite containing the assemblage glaucophane + omphacite (X-Jd up to 039) + rutile + quartz, indicating P-T conditions near 13 kbar/550 degrees C. New equilibrium phase modeling of a garnet-paragonite mica schist and compositional isopleths for peak assemblage minerals garnet and phengite (Si = 3.33-3.37 pfu) indicate metamorphic conditions of 15.5-17 kbar/530-550 degrees C. These P-T estimates are higher than previously reported in the Yuli belt and suggest that both tectonic blocks and host metapelites underwent HP metamorphism. The juxtaposition of tectonic blocks and metapelites apparently occurred during the formation of a subduction-accretionary complex, followed by exhumation facilitated by a collisional event. These new findings imply that HP metamorphism was not limited to tectonic blocks, and instead played a significant role attending orogenesis in eastern Taiwan. (C) 2015 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@article{BousquetOberhaensli1998,
  author    = {Bousquet, Romain and Oberh{\"a}nsli, Roland},
  title     = {High-pressure-low-temperature metamorphism and deformation in the "B{\"u}ndnerschiefer" of the Engadine window : implications for the regional evolution of the eastern Central Alps},
  year      = {1998},
  language  = {en}
}
@article{ToksoyKoeksalOberhaensliGoencueoglu2009,
  author    = {Toksoy-Koeksal, Fatma and Oberh{\"a}nsli, Roland and Goencueoglu, M. Cemal},
  title     = {Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone : implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean},
  issn      = {0930-0708},
  doi       = {10.1007/s00710-009-0044-7},
  year      = {2009},
  abstract  = {The Kurancali ultramafic-mafic cumulate body, an allochthonous ophiolitic sliver in central Anatolia, is characterized by the presence of abundant hydrous phases (phlogopite, pargasite) besides augitic diopside, plagioclase, and accessory amounts of rutile, sphene, apatite, zircon, and calcite. Based on modes of the essential minerals, the olivine-orthopyroxene-free cumulates are grouped as clinopyroxenite, hydrous clinopyroxenite, phlogopitite, hornblendite, layered gabbro, and diorite. Petrographical, mineralogical and geochemical features of the rocks infer crystallization from a hydrous magma having high-K calcalkaline affinity with slightly alkaline character, and point to metasomatised mantle as the magma source. Our evidence implies that the metasomatising component, which modified the composition of the mantle wedge source rock in an intraoceanic subduction zone, was a H2O, alkali and carbonate-rich aluminosilicate fluid and/or melt, probably derived from a subducted slab. We suggest that the metasomatic agents in the subarc mantle led to the generation of a hydrous magma, which produced the Kurancali cumulates in an island-arc basement in a supra-subduction-zone setting during the closure of the Izmir-Ankara-Erzincan branch of the Alpine Neotethys Ocean.},
  language  = {en}
}
@article{WilhelmAltenbergerOberhaensli2001,
  author    = {Wilhelm, Stefan and Altenberger, Uwe and Oberh{\"a}nsli, Roland},
  title     = {Intrusive marbles in the Ivrea Zone (Italy) : evidence for melting of metacarbonates},
  year      = {2001},
  language  = {en}
}
@article{OmraniMoazzenOberhaenslietal.2017,
  author    = {Omrani, Hadi and Moazzen, Mohssen and Oberh{\"a}nsli, Roland and Moslempour, Mohammad Elyas},
  title     = {Iranshahr blueschist: subduction of the inner Makran oceanic crust},
  series = {Journal of metamorphic geology},
  volume    = {35},
  journal   = {Journal of metamorphic geology},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {0263-4929},
  doi       = {10.1111/jmg.12236},
  pages     = {373 -- 392},
  year      = {2017},
  abstract  = {The Makran accretionary prism in SE Iran and SW Pakistan is one of the most extensive subduction accretions on Earth. It is characterized by intense folding, thrust faulting and dislocation of the Cenozoic units that consist of sedimentary, igneous and metamorphic rocks. Rock units forming the northern Makran ophiolites are amalgamated as a melange. Metamorphic rocks, including greenschist, amphibolite and blueschist, resulted from metamorphism of mafic rocks and serpentinites. In spite of the geodynamic significance of blueschist in this area, it has been rarely studied. Peak metamorphic phases of the northern Makran mafic blueschist in the Iranshahr area are glaucophane, phengite, quartz +/- omphacite+epidote. Post peak minerals are chlorite, albite and calcic amphibole. Blueschist facies metasedimentary rocks contain garnet, phengite, albite and epidote in the matrix and as inclusions in glaucophane. The calculated P-T pseudosection for a representative metabasic glaucophane schist yields peak pressure and temperature of 11.5-15kbar at 400-510 degrees C. These rocks experienced retrograde metamorphism from blueschist to greenschist facies (350-450 degrees C and 7-8kbar) during exhumation. A back arc basin was formed due to northward subduction of Neotethys under Eurasia (Lut block). Exhumation of the high-pressure metamorphic rocks in northern Makran occurred contemporarily with subduction. Several reverse faults played an important role in exhumation of the ophiolitic and HP-LT rocks. The presence of serpentinite shows the possible role of a serpentinite diapir for exhumation of the blueschist. A tectonic model is proposed here for metamorphism and exhumation of oceanic crust and accretionary sedimentary rocks of the Makran area. Vast accretion of subducted materials caused southward migration of the shore.},
  language  = {en}
}
@article{WenzelOberhaensliMezger2000,
  author    = {Wenzel, T. and Oberh{\"a}nsli, Roland and Mezger, Klaus},
  title     = {K-rich plutonic rocks and lamprophyres from the Meissen Massif (northern Bohemian Massif) : Geochemical evidence for variably enriched lithospheric mantle sources},
  year      = {2000},
  language  = {en}
}
@article{OberhaensliKoralayCandanetal.2013,
  author    = {Oberh{\"a}nsli, Roland and Koralay, E. and Candan, Osman and Pourteau, Amaury and Bousquet, Romain},
  title     = {Late cretaceous eclogitic high-pressure relics in the Bitlis Massif},
  series = {Geodinamica acta : revue de g{\´e}ologie dynamique et de g{\´e}ographie physique},
  volume    = {26},
  journal   = {Geodinamica acta : revue de g{\´e}ologie dynamique et de g{\´e}ographie physique},
  number    = {3-4},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {0985-3111},
  doi       = {10.1080/09853111.2013.858951},
  pages     = {175 -- 190},
  year      = {2013},
  abstract  = {A new occurrence of eclogites was found in the Kesandere valley in the eastern most part of the Bitlis complex, SE Anatolia. These high-pressure (HP) relics were preserved in calc-arenitic metasediments within the high-grade metamorphic basement of the Bitlis complex. The eclogitic parageneses were strongly overprinted during decompression and heating. These new eclogites locality complements the evidence of blueschist-facies metamorphism documented recently in the meta-sedimentary cover sequence of this part of the Bitlis complex. Thermodynamic calculations suggest peak conditions of ca. 480-540 degrees C/1.9-2.4GPa. New U/Pb dates of 84.4 +/-.9 and 82.4 +/-.9Ma were obtained on zircons from two Kesandere eclogite samples. On the basis of geochemical criteria, these dates are interpreted to represent zircon crystallization during the eclogitic peak stage. Kesandere eclogites differ from those previously described in the western Bitlis complex (Mt. Gablor locality) in terms of lithologic association, protolithic origin, and peak P-T conditions (600-650 degrees C/1.0-2.0GPa, respectively). On the other hand, eclogitic metamorphism of Kesandere metasediments occurred shortly before blueschist-facies metamorphism of the sedimentary cover (79-74Ma Ar-40/Ar-39 white mica). Therefore, the exhumation of Kesandere eclogites started between ca. 82 and 79Ma, while the meta-sedimentary cover was being buried. During this short time span, Kesandere eclogite were likely uplifted from similar to 65 to 35km depth, indicating a syn-subduction exhumation rate of similar to 4.3mm/a. Subsequently, eclogite- and blueschist-facies rocks were likely retrogressed contemporarily during collision-type metamorphism (around 72-69Ma). The Bitlis HP rocks thus sample a subduction zone that separated the Bitlis-Puturge (Bistun?) block from the South-Armenian block, further north. To the south, Eocene metasediments of the Urse formation are imbricated below the Bitlis complex. They contain (post Eocene) blueschists, testifying separation from the Arabian plate and southward migration of the subduction zone. The HT overprint of Kesandere eclogites can be related to the asthenospheric flow provoked by subducting slab retreat or break off.},
  language  = {en}
}
@article{AyguelOkayOberhaenslietal.2015,
  author    = {Ayg{\"u}l, Mesut and Okay, Aral I. and Oberh{\"a}nsli, Roland and Schmidt, Alexander and Sudo, Masafumi},
  title     = {Late Cretaceous infant intra-oceanic arc volcanism, the Central Pontides, Turkey: Petrogenetic and tectonic implications},
  series = {Journal of Asian earth sciences},
  volume    = {111},
  journal   = {Journal of Asian earth sciences},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {1367-9120},
  doi       = {10.1016/j.jseaes.2015.07.005},
  pages     = {312 -- 327},
  year      = {2015},
  abstract  = {A tectonic slice of an arc sequence consisting of low-grade metavolcanic rocks and overlying metasedimentary succession is exposed in the Central Pontides north of the Izmir-Ankara-Erzincan suture separating Laurasia from Gondwana-derived terranes. The metavolcanic rocks mainly consist of basaltic andesite/andesite and mafic cognate xenolith-bearing rhyolite with their pyroclastic equivalents, which are interbedded with recrystallized pelagic limestone and chert. The metasedimentary succession comprises recrystallized micritic limestone with rare volcanogenic metaclastic rocks and stratigraphically overlies the metavolcanic rocks. The geochemistry of the metavolcanic rocks indicates an arc setting evidenced by depletion of HFSE (Ti, P and Nb) and enrichment of fluid mobile LILE. Identical trace and rare earth elements compositions of basaltic andesites/andesites and rhyolites suggest that they are cogenetic and derived from a common parental magma. The arc sequence crops out between an Albian-Turonian subduction-accretionary complex representing the Laurasian active margin and an ophiolitic melange. Absence of continent derived detritus in the arc sequence and its tectonic setting in a wide Cretaceous accretionary complex suggest that the Kosdag Arc was intra-oceanic. Zircons from two metarhyolite samples give Late Cretaceous (93.8 +/- 1.9 and 94.4 +/- 1.9 Ma) U/Pb ages. These ages are the same as the age of the supra-subduction ophiolites in western Turkey, which implies that that the Kosdag Arc may represent part of the incipient arc formed during the generation of the supra-subduction ophiolites. The low-grade regional metamorphism in the Kosdag Arc is constrained to 69.9 +/- 0.4 Ma by Ar-40/Ar-39 muscovite dating indicating that the arc sequence became part of a wide Tethyan Cretaceous accretionary complex by the latest Cretaceous. Non-collisional cessation of the arc volcanism is possibly associated with southward migration of the magmatism as in the Izu-Bonin-Mariana arc system. (c) 2015 Elsevier Ltd. All rights reserved.},
  language  = {en}
}
@article{CandanKoralayTopuzetal.2016,
  author    = {Candan, O. and Koralay, O. E. and Topuz, G. and Oberh{\"a}nsli, Roland and Fritz, H. and Collins, A. S. and Chen, F.},
  title     = {Late Neoproterozoic gabbro emplacement followed by early Cambrian eclogite-facies metamorphism in the Menderes Massif (W. Turkey): Implications on the final assembly of Gondwana},
  series = {Gondwana research : international geoscience journal ; official journal of the International Association for Gondwana Research},
  volume    = {34},
  journal   = {Gondwana research : international geoscience journal ; official journal of the International Association for Gondwana Research},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1342-937X},
  doi       = {10.1016/j.gr.2015.02.015},
  pages     = {158 -- 173},
  year      = {2016},
  abstract  = {Numerous (meta-)gabbroic dikes or stocks occur within the latest Neoproterozoic-early Cambrian series of the Menderes Massif (Anatolide-Tauride Block, western Turkey). These well-preserved rocks were locally converted into eclogitic metagabbros and garnet amphibolites along the contacts or shear zones. Both bulk-rock composition and compositions of igneous clinopyroxenes suggest continental tholeiitic affinity. U-Pb dating of igneous zircons from gabbroic rocks yielded a mean age of 563 +/- 1 Ma (2 sigma), indicating emplacement during the latest Neoproterozoic (Ediacaran). On the other hand, rims of zircons from eclogitic metagabbro gave 535 +/- 3 Ma (2 sigma) (early Cambrian), in addition to 558 +/- 3 Ma (2 sigma) obtained from the igneous core of zircons. These ages are interpreted as the time of high-P metamorphism and crystallization age of gabbroic protolith, respectively. Given the estimated paleogeographic position of the Anatolide-Tauride Block during the late Neoproterozoic and early Cambrian, this orogenic event can be spatially and temporally related to the northward continuity of 600-500 Ma orogenic event (Malagasy/Kuunga orogeny) extending from western margin of India, Madagascar, via Arabia up to northern margin of Gondwana beneath thick Phanerozoic cover series in Arabian Peninsula. Therefore, the high-P evolution of the basement of the Menderes Massif and associated basic intrusions can be interpreted to mark the latest stages of consumption of the basin/oceanic branches and final amalgamation of the Gondwana during the late Neoproterozoic-early Cambrian around the Arabian region. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.},
  language  = {en}
}
@article{PoupeauSaddiqiMichardetal.1998,
  author    = {Poupeau, G. and Saddiqi, O. and Michard, Andre and Goffe, B. and Oberh{\"a}nsli, Roland},
  title     = {Late thermal evolution of the oman mountains subophiolitic windows : apatite fission-track thermochronology},
  issn      = {0091-7613},
  year      = {1998},
  language  = {en}
}
@article{FoersterFoersterOberhaenslietal.2010,
  author    = {F{\"o}rster, Hans-J{\"u}rgen and F{\"o}rster, Andrea and Oberh{\"a}nsli, Roland and Stromeyer, Dietrich},
  title     = {Lithospheric composition and thermal structure of the Arabian Shield in Jordan},
  issn      = {0040-1951},
  doi       = {10.1016/j.tecto.2008.11.014},
  year      = {2010},
  abstract  = {In this paper, a unique set of samples from the uppermost crust down to the lithospheric mantle of Jordan is analyzed for composition and petrophysical properties (density. thermal conductivity, radiogenic heat production) These data, covering a vertical section of almost 65 km. are used in conjunction with surface heat flow to generate a detailed and comprehensive lithospheric thermal model that reflects the conditions of the Arabian Shield (AS) prior to the post- Oligocene onset of lithosphere thinning and Voluminous basaltic volcanism. The pre-Miocene model geotherms, based on conductive surface heat flows of 55 and 60 mW m(-2). (a) meet the range of lithosphere-asthenosphere boundary depths of 110-160 km known from seismology, (b) conform to results of thermomechanical models on the on.-in of the Dead Sea basin that started in Miocene time. and (c) are consistent with typical xenolith-derived geotherms for terranes of similar age and lithospheric thickness. Moho temperatures (at depths between 35 and 40 km) of the AS in pre-Miocene times were most likely in the order of 530-650 degrees C, with mantle heat flows averaging between 24 and 29 mW m(-2) Results contradict former views of the late Proterozoic/early Cambrian-stabilized AS being an anomalously cold terrane A "cold" thermal structure inferred from previously measured low surface heat flows (generally <= 45 mW m(-2)) is inconsistent with the thickness, composition, and petrophysical properties of the stable lithosphere of the shield.},
  language  = {en}
}
@misc{OmraniMoazzenOberhaenslietal.2013,
  author    = {Omrani, H. and Moazzen, Mohssen and Oberh{\"a}nsli, Roland and Tsujimori, T. and Bousquet, Romain and Moayyed, M.},
  title     = {Metamorphic history of glaucophane-paragonite-zoisite eclogites from the Shanderman area, northern Iran},
  series = {Journal of metamorphic geology},
  volume    = {31},
  journal   = {Journal of metamorphic geology},
  number    = {8},
  publisher = {Wiley-Blackwell},
  address   = {Hoboken},
  issn      = {0263-4929},
  doi       = {10.1111/jmg.12045},
  pages     = {791 -- 812},
  year      = {2013},
  abstract  = {The Shanderman eclogites and related metamorphosed oceanic rocks mark the site of closure of the Palaeotethys ocean in northern Iran. The protolith of the eclogites was an oceanic tholeiitic basalt with MORB composition. Eclogite occurs within a serpentinite matrix, accompanied by mafic rocks resembling a dismembered ophiolite. The eclogitic mafic rocks record different stages of metamorphism during subduction and exhumation. Minerals formed during the prograde stages are preserved as inclusions in peak metamorphic garnet and omphacite. The rocks experienced blueschist facies metamorphism on their prograde path and were metamorphosed in eclogite facies at the peak of metamorphism. The peak metamorphic mineral paragenesis of the rocks is omphacite, garnet (pyrope-rich), glaucophane, paragonite, zoisite and rutile. Based on textural relations, post-peak stages can be divided into amphibolite and greenschist facies. Pressure and temperature estimates for eclogite facies minerals (peak of metamorphism) indicate 15-20kbar at similar to 600 degrees C. The pre-peak blueschist facies assemblage yields <11kbar and 400-460 degrees C. The average pressure and temperature of the post-peak amphibolite stage was 5-6kbar, similar to 470 degrees C. The Shanderman eclogites were formed by subduction of Palaeotethys oceanic crust to a depth of no more than 75km. Subduction was followed by collision between the Central Iran and Turan blocks, and then exhumation of the high pressure rocks in northern Iran.},
  language  = {en}
}
@article{BianchiMartinottiOberhaensli1998,
  author    = {Bianchi, Gianphino Walter and Martinotti, G. and Oberh{\"a}nsli, Roland},
  title     = {Metasedimentary cover sequences and associated metabasites in the Sabbione Lake zone, Formazza Valley, Italy},
  year      = {1998},
  language  = {en}
}
@article{SakiMoazzenOberhaensli2012,
  author    = {Saki, Adel and Moazzen, Mohssen and Oberh{\"a}nsli, Roland},
  title     = {Mineral chemistry and thermobarometry of the staurolite-chloritoid schists from Poshtuk, NW Iran},
  series = {Geological magazine},
  volume    = {149},
  journal   = {Geological magazine},
  number    = {6},
  publisher = {Cambridge Univ. Press},
  address   = {New York},
  issn      = {0016-7568},
  doi       = {10.1017/S0016756812000209},
  pages     = {1077 -- 1088},
  year      = {2012},
  abstract  = {The Poshtuk metapelitic rocks in northwestern Iran underwent two main phases of regional and contact metamorphism. Microstructures, textural features and field relations indicate that these rocks underwent a polymetamorphic history. The dominant metamorphic assemblage of the metapelites is garnet, staurolite, chloritoid, chlorite, muscovite and quartz, which grew mainly syntectonically during the later contact metamorphic event. Peak metamorphic conditions of this event took place at 580 degrees C and similar to 3-4 kbar, indicating that this event occurred under high-temperature and low-pressure conditions (HT/LP metamorphism), which reflects the high heat flow in this part of the crust. This event is mainly controlled by advective heat input through magmatic intrusions into all levels of the crust. These extensive Eocene metamorphic and magmatic activities can be associated with the early Alpine Orogeny, which resulted in this area from the convergence between the Arabian and Eurasian plates, and the Cenozoic closure of the Tethys oceanic tract(s).},
  language  = {en}
}
@article{AliGiurcoArndtetal.2017,
  author    = {Ali, Saleem H. and Giurco, Damien and Arndt, Nicholas and Nickless, Edmund and Brown, Graham and Demetriades, Alecos and Durrheim, Ray and Enriquez, Maria Amelia and Kinnaird, Judith and Littleboy, Anna and Meinert, Lawrence D. and Oberh{\"a}nsli, Roland and Salem, Janet and Schodde, Richard and Schneider, Gabi and Vidal, Olivier and Yakovleva, Natalia},
  title     = {Mineral supply for sustainable development requires resource governance},
  series = {Nature : the international weekly journal of science},
  volume    = {543},
  journal   = {Nature : the international weekly journal of science},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {0028-0836},
  doi       = {10.1038/nature21359},
  pages     = {367 -- 372},
  year      = {2017},
  abstract  = {Successful delivery of the United Nations sustainable development goals and implementation of the Paris Agreement requires technologies that utilize a wide range of minerals in vast quantities. Metal recycling and technological change will contribute to sustaining supply, but mining must continue and grow for the foreseeable future to ensure that such minerals remain available to industry. New links are needed between existing institutional frameworks to oversee responsible sourcing of minerals, trajectories for mineral exploration, environmental practices, and consumer awareness of the effects of consumption. Here we present, through analysis of a comprehensive set of data and demand forecasts, an interdisciplinary perspective on how best to ensure ecologically viable continuity of global mineral supply over the coming decades.},
  language  = {en}
}
@article{PourteauBousquetVidaletal.2014,
  author    = {Pourteau, Amaury and Bousquet, Romain and Vidal, Olivier and Plunder, Alexis and Duesterhoeft, Erik and Candan, Osman and Oberh{\"a}nsli, Roland},
  title     = {Multistage growth of Fe-Mg-carpholite and Fe-Mg-chloritoid, from field evidence to thermodynamic modelling},
  series = {Contributions to mineralogy and petrology},
  volume    = {168},
  journal   = {Contributions to mineralogy and petrology},
  number    = {6},
  publisher = {Springer},
  address   = {New York},
  issn      = {0010-7999},
  doi       = {10.1007/s00410-014-1090-7},
  pages     = {25},
  year      = {2014},
  abstract  = {We provide new insights into the prograde evolution of HP/LT metasedimentary rocks on the basis of detailed petrologic examination, element-partitioning analysis, and thermodynamic modelling of well-preserved Fe-Mg-carpholite- and Fe-Mg-chloritoid-bearing rocks from the Afyon Zone (Anatolia). We document continuous and discontinuous compositional (ferromagnesian substitution) zoning of carpholite (overall X-Mg = 0.27-0.73) and chloritoid (overall X-Mg = 0.07-0.30), as well as clear equilibrium and disequilibrium (i.e., reaction-related) textures involving carpholite and chloritoid, which consistently account for the consistent enrichment in Mg of both minerals through time, and the progressive replacement of carpholite by chloritoid. Mg/Fe distribution coefficients calculated between carpholite and chloritoid vary widely within samples (2.2-20.0). Among this range, only values of 7-11 correlate with equilibrium textures, in agreement with data from the literature. Equilibrium phase diagrams for metapelitic compositions are calculated using a newly modified thermodynamic dataset, including most recent data for carpholite, chloritoid, chlorite, and white mica, as well as further refinements for Fe-carpholite, and both chloritoid end-members, as required to reproduce accurately petrologic observations (phase relations, experimental constraints, Mg/Fe partitioning). Modelling reveals that Mg/Fe partitioning between carpholite and chloritoid is greatly sensitive to temperature and calls for a future evaluation of possible use as a thermometer. In addition, calculations show significant effective bulk composition changes during prograde metamorphism due to the fractionation of chloritoid formed at the expense of carpholite. We retrieve P-T conditions for several carpholite and chloritoid growth stages (1) during prograde stages using unfractionated, bulk-rock XRF analyses, and (2) at peak conditions using compositions fractionated for chloritoid. The P-T paths reconstructed for the Kutahya and Afyon areas shed light on contrasting temperature conditions for these areas during prograde and peak stages.},
  language  = {en}
}
@article{OberhaensliNegendank1997,
  author    = {Oberh{\"a}nsli, Roland and Negendank, J{\"o}rg F. W.},
  title     = {Natural and anthropogenic influences on the geochemistry of Quaternary lake sediments from Holzmaar, Germany},
  year      = {1997},
  language  = {en}
}
@article{LiuJahnDongetal.2003,
  author    = {Liu, Xiaochun and Jahn, Bor-Ming and Dong, Shuwen and Li, Huimin and Oberh{\"a}nsli, Roland},
  title     = {Neoproterozoic granitoid did not record ultrahigh-pressure metamorphism from the Southern Dabieshan of China},
  issn      = {0022-1376},
  year      = {2003},
  abstract  = {It has been often debated whether all granitic gneisses associated with coesite-bearing eclogites in southern Dabieshan, China, have also been subjected to ultrahigh-pressure (UHP) metamorphism. We show here that a metagranitoid adjacent to the Bixiling eclogite-ultramafic complex has preserved primary granitic textures and an igneous mineral assemblage of biotite + plagioclase + microcline + quartz + allanite +/- amphibole. The absence of UPH recrystallization for the metagranitoid is particularly manifested by the conservation of euhedral-zoned plagioclase phenocrysts, the lack of corona garnets around igneous biotite, and the presence of an igneous mineral assemblage in zircons. The only metamorphic overprint was the epidote-amphibolite facies metamorphism characterized by the assemblage of biotite + phengiticmica + epidote + albite + K-feldspar + quartz +/- amphibole Metamorphic conditions are estimated at ca. 550degrees-680degreesC and 6-13 kbar for the metagranitoid and its amphibolitic enclave. Geochemically, the metagranitoid is similar to its country gneiss and shows an affinity to volcanic arc granitoid. Zircon U-Pb dating suggests that the Bixiling metagranitoid was emplaced during the Neoproterozoic (729+/-4 Ma), when most other granitic rocks and the protoliths of eclogite were also formed in Dabieshan. Taking into account the discovery of non-UHP granitic gneisses in other places, we argue that part of Neoproterozoic granitic rocks in the Dabieshan and Sulu terranes have escaped UHP metamorphism during the Triassic deep subduction of the continental crust as a consequence of a lack of penetrative deformation and fluid-rock interaction},
  language  = {en}
}
@misc{PourteauOberhaensliCandanetal.2016,
  author    = {Pourteau, Amaury and Oberh{\"a}nsli, Roland and Candan, Osman and Barrier, Eric and Vrielynck, Bruno},
  title     = {Neotethyan closure history of western Anatolia: a geodynamic discussion},
  series = {International journal of earth sciences},
  volume    = {105},
  journal   = {International journal of earth sciences},
  publisher = {Springer},
  address   = {New York},
  issn      = {1437-3254},
  doi       = {10.1007/s00531-015-1226-7},
  pages     = {203 -- 224},
  year      = {2016},
  abstract  = {This paper addresses the lithosphere-scale subduction-collision history of the eastern termination of the Aegean retreating subduction system, i.e. western Anatolia. Although there is some general consensus on the protracted subduction evolution of the Aegean since the early Cenozoic at least, correlation with western Anatolia has been widely debated for more than several decades. In western Anatolia, three main tectonic configurations have been envisaged in the past years to reconstruct slab dynamics during the closure of the Neotethyan oceanic realm since the Late Cretaceous. Some authors have suggested an Aegean-type scenario, with the continuous subduction of a single lithospheric slab, punctuated by episodic slab roll-back and trench retreat, whereas others assumed a discontinuous subduction history marked by intermittent slab break-off during either the Campanian (ca. 75 Ma) or the Early Eocene (ca. 55-50 Ma). The third view implies three partly contemporaneous subduction zones. Our review of these models points to key debated aspects that can be re-evaluated in the light of multidisciplinary constraints from the literature. Our discussion leads us to address the timing of subduction initiation, the existence of hypothetical ocean basins, the number of intervening subduction zones between the Taurides and the Pontides, the palaeogeographic origin of tectonic units and the possibility for slab break-off during either the Campanian or the Early Eocene. Thence, we put forward a favoured tectonic scenario featuring two successive phases of subduction of a single lithospheric slab and episodic accretion of two continental domains separated by a continental trough, representing the eastern end of the Cycladic Ocean of the Aegean. The lack of univocal evidence for slab break-off in western Anatolia and southward-younging HP/LT metamorphism in continental tectonic units (from similar to 85, 70 to 50 Ma) in the Late Cretaceous-Palaeogene period suggests continuous subduction since similar to 110 Ma, marked by roll-back episodes in the Palaeocene and the Oligo-Miocene, and slab tearing below western Anatolia during the Miocene.},
  language  = {en}
}