@article{WiederkehrBousquetZiemannetal.2011,
  author    = {Wiederkehr, Michael and Bousquet, Romain and Ziemann, Martin Andreas and Berger, Alfons and Schmid, Stefan M.},
  title     = {3-D assessment of peak-metamorphic conditions by Raman spectroscopy of carbonaceous material an example from the margin of the Lepontine dome (Swiss Central Alps)},
  series = {International journal of earth sciences},
  volume    = {100},
  journal   = {International journal of earth sciences},
  number    = {5},
  publisher = {Springer},
  address   = {New York},
  issn      = {1437-3254},
  doi       = {10.1007/s00531-010-0622-2},
  pages     = {1029 -- 1063},
  year      = {2011},
  abstract  = {This study monitors regional changes in the crystallinity of carbonaceous matter (CM) by applying Micro-Raman spectroscopy to a total of 214 metasediment samples (largely so-called Bundnerschiefer) dominantly metamorphosed under blueschist- to amphibolite-facies conditions. They were collected within the northeastern margin of the Lepontine dome and easterly adjacent areas of the Swiss Central Alps. Three-dimensional mapping of isotemperature contours in map and profile views shows that the isotemperature contours associated with the Miocene Barrow-type Lepontine metamorphic event cut across refolded nappe contacts, both along and across strike within the northeastern margin of the Lepontine dome and adjacent areas. Further to the northeast, the isotemperature contours reflect temperatures reached during the Late Eocene subduction-related blueschist-facies event and/or during subsequent near-isothermal decompression; these contours appear folded by younger, large-scale post-nappe-stacking folds. A substantial jump in the recorded maximum temperatures across the tectonic contact between the frontal Adula nappe complex and surrounding metasediments indicates that this contact accommodated differential tectonic movement of the Adula nappe with respect to the enveloping Bundnerschiefer after maximum temperatures were reached within the northern Adula nappe, i.e. after Late Eocene time.},
  language  = {en}
}
@article{WiederkehrSudoBousquetetal.2009,
  author    = {Wiederkehr, Michael and Sudo, Masafumi and Bousquet, Romain and Berger, Alfons and Schmid, Stefan M.},
  title     = {Alpine orogenic evolution from subduction to collisional thermal overprint : the Ar-40/Ar-39 age constraints from the Valaisan Ocean, central Alps},
  issn      = {0278-7407},
  doi       = {10.1029/2009tc002496},
  year      = {2009},
  abstract  = {The investigated HP/LT metasedimentary units of the Valaisan and adjacent European domains occupy a key position in the Alpine belt for understanding the transition from early subduction-related HP/LT metamorphism to collision-related Barrovian overprint and the evolution of mountain belts in general. The timing of high-pressure metamorphism, subsequent retrogression and following Barrow-type overprint was studied by Ar-40/Ar-39 dating of biotite and several white mica generations that are well characterized in terms of mineral chemistry, texture and associated mineral assemblages. Four distinct age populations of white mica record peak pressure conditions (42-40 Ma) and several stages of subsequent retrograde metamorphic evolution (36-25 Ma). Biotite isotopic analyses yield consistent apparent ages that cluster around 18-16 Ma for the Barrow-type thermal overprint. The recorded isotopic data reveal a significant time gap in the order of some 20 Ma between subduction-related HP/LT metamorphism and collision-related Barrovian overprint, supporting the notion of a polymetamorphic evolution associated with a bimodal P-T path.},
  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{SchmitzMoellerWilkeetal.2009,
  author    = {Schmitz, Sylvia and Moeller, Andreas and Wilke, Max and Malzer, Wolfgang and Kanngiesser, Birgit and Bousquet, Romain and Berger, Alfons and Schefer, Senecio},
  title     = {Chemical U-Th-Pb dating of monazite by 3D-Micro X-ray fluorescence analysis with synchrotron radiation},
  issn      = {0935-1221},
  doi       = {10.1127/0935-1221/2009/0021-1964},
  year      = {2009},
  abstract  = {A confocal set-up for three-dimensional (3D) micro X-ray fluorescence (micro-XRF) was used at the mySpot beamline at BESSY II, which allows compositional depth profiling for various applications. We present results obtained with a confocal 3D micro-XRF set-up for chemical age dating using the U, Th and Pb concentrations of monazite within rock thin sections. The probing volume was determined to be approximately 21 x 21 x 24 mu m(3) for W-L alpha using an excitation energy of 19 keV. The relative detection limits particularly for Pb are below 10 ppm (for Counting times},
  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{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{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{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{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}
}
@misc{BousquetDeCapitaniArcay2006,
  author    = {Bousquet, Romain and De Capitani, Christian and Arcay, Diane},
  title     = {Feedback of the metamorphic changes on the subducting processes},
  series = {Geochimica et cosmochimica acta : journal of the Geochemical Society and the Meteoritical Society},
  volume    = {70},
  journal   = {Geochimica et cosmochimica acta : journal of the Geochemical Society and the Meteoritical Society},
  number    = {18},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0016-7037},
  doi       = {10.1016/j.gca.2006.06.228},
  pages     = {A62 -- A62},
  year      = {2006},
  language  = {en}
}