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Andréa Tommasi
Researcher at University of Montpellier
Publications - 152
Citations - 7242
Andréa Tommasi is an academic researcher from University of Montpellier. The author has contributed to research in topics: Mantle (geology) & Lithosphere. The author has an hindex of 46, co-authored 148 publications receiving 6586 citations. Previous affiliations of Andréa Tommasi include University of Trento & Universidade Federal do Rio Grande do Sul.
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Viscoplastic self‐consistent and equilibrium‐based modeling of olivine lattice preferred orientations: Implications for the upper mantle seismic anisotropy
TL;DR: In this paper, an anisotropic viscoplastic self-consistent (VPSC) and an equilibrium-based model were used to simulate the development of olivine LPO and, hence, of seismic anisotropy during deformation.
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The Lherz spinel lherzolite: Refertilized rather than pristine mantle
V. Le Roux,Jean-Louis Bodinier,Andréa Tommasi,Olivier Alard,Jean Marie Dautria,Alain Vauchez,A. J. V. Riches +6 more
TL;DR: In this article, structural and geochemical data from the Lherz massif, the type-locality of lherzolite, were used to show that most of these massifs were formed through a refertilization process involving interaction of refractory, lithospheric mantle with upwelling asthenospheric partial melts.
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Pressure sensitivity of olivine slip systems and seismic anisotropy of Earth's upper mantle.
TL;DR: It is shown that high-pressure dislocation creep produces crystal preferred orientations resulting in extremely low seismic anisotropy, consistent with seismological observations below 250 km depth, which raises new questions about the mechanical state of the lower part of the upper mantle and its coupling with layers both above and below.
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Upper mantle tectonics: three-dimensional deformation, olivine crystallographic fabrics and seismic properties
TL;DR: In this article, the effect of deformation regime on the development of olivine lattice-preferred orientations (LPO) and associated seismic anisotropy within continental deformation zones is investigated.
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Continental rifting parallel to ancient collisional belts: an effect of the mechanical anisotropy of the lithospheric mantle
Andréa Tommasi,Alain Vauchez +1 more
TL;DR: In this paper, the deformation of an anisotropic continental lithosphere in response to an axi-symmetric tensional stress field produced by an upwelling mantle plume was investigated.