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Showing 1–5 of 5 results
Advanced filters: Author: Nicolas Guignot Clear advanced filters

  • Hydrous silicate melts atop the 410 km discontinuity have ultra-low viscosities, enabling rapid segregation. These melts form paired layers through continuous dehydration melting, which can merge under specific conditions, explaining seismically observed deep melt structures.

    • Longjian Xie
    • Denis Andrault
    • David P. Dobson
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • Using in situ high pressure measurements, the structure and density of a sulfide phase with the formula Fe4+xS3 have been determined. The thermal stability of this phase makes it a potential candidate to form a Martian inner core.

    • Lianjie Man
    • Xiang Li
    • Daniel. J. Frost
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • A persistent melt layer may have existed in the Archaean upper mantle, according to experimental analyses. The melt layer could have decoupled the mantle from the overlying lithosphere, hindering plate tectonics.

    • Denis Andrault
    • Giacomo Pesce
    • Louis Hennet
    Research
    Nature Geoscience
    Volume: 11, P: 139-143

  • Following the impact of the protoplanet Theia, planet Earth likely transformed into a magma ocean. New high temperature and pressure experiments by Xie et al. suggest that a layer enriched in bridgmanite formed during the magma ocean phase of Earth–remnants of this ancient layer today may be responsible for the viscosity peak between 660 and 1500 km in present solid mantle.

    • Longjian Xie
    • Akira Yoneda
    • Denis Andrault
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-10