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Showing 1–10 of 10 results
Advanced filters: Author: Manuele Faccenda Clear advanced filters

  • It is shown that the amount and geometry of seismic anisotropy measured in the forearc regions of subduction zones strongly depend on the preferred orientation of hydrated faults in the subducting oceanic plate. The anisotropy originates from the crystallographic preferred orientation of highly anisotropic hydrous minerals formed along steeply dipping faults and from the larger-scale vertical layering consisting of dry and hydrated crust–mantle sections, the spacing of which is several times smaller than teleseismic wavelengths.

    • Manuele Faccenda
    • Luigi Burlini
    • David Mainprice
    Research
    Nature
    Volume: 455, P: 1097-1100

  • Geophysical data reveal that at subduction zones oceanic plates could be pervasively hydrated for several kilometres below the crust–mantle boundary. Numerical experiments suggest that such deep hydration is facilitated by negative pressure gradients that lead to the downward pumping of water along bending-related normal faults.

    • Manuele Faccenda
    • Taras V. Gerya
    • Luigi Burlini
    Research
    Nature Geoscience
    Volume: 2, P: 790-793

  • Plume-slab interaction and its surface expression remain poorly understood. Here, the authors compare 3-D anisotropic tomography and geodynamical models, and show that the stagnation and fastest trench retreat of the Tonga slab are consistent with an interaction with the Samoan plume and the Hikurangi plateau.

    • Sung-Joon Chang
    • Ana M. G. Ferreira
    • Manuele Faccenda
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-9

  • South American and African cratons may have been substantially modified by mantle plumes, according to analyses of seismic images and tectonic records. The results imply that cratons may not be as stable as once thought.

    • Jiashun Hu
    • Lijun Liu
    • Craig Lundstrom
    Research
    Nature Geoscience
    Volume: 11, P: 203-210

  • Lower-mantle anisotropy is present beneath all subduction zones, indicating that dislocation creep is active in the lower mantle, according to analysis of 3D global seismic tomography images.

    • Ana M. G. Ferreira
    • Manuele Faccenda
    • Lewis Schardong
    Research
    Nature Geoscience
    Volume: 12, P: 301-306

  • Mantle flow induced by slab detachment plays a key role in regulating plate convergence, with spreading ridges and continent-trench collisions causing significant tectonic uplift and acceleration of plate motion, according to numerical modelling of lithosphere-mantle dynamics.

    • Yangming Wu
    • Manuele Faccenda
    • Zhongping Lai
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 6, P: 1-12