project . 2020 - 2024 . On going

ELASTIC

The effect of Fe, Al and Ti on the density, elasticity and the post-stishovite transition of eclogitic H2O-bearing stishovite: Implications on the observability of seismic anomalies in Earth’s mantle
Open Access mandate for Publications and Research DataOpen Access mandate for ... European Commission
  • Funder: European CommissionProject code: 898169 Call for proposal: H2020-MSCA-IF-2019
  • Funded under: H2020 | MSCA-IF-EF-CAR Overall Budget: 295,062 EURFunder Contribution: 295,062 EUR
  • Status: On going
  • Start Date
    01 Sep 2020
    End Date
    31 May 2024
  • Detailed project information (CORDIS)
Description
Al-bearing stishovite is considered to be the main H2O-bearing silicate phase present in recycled subducted oceanic crust (i.e. eclogite) at uppermost lower mantle conditions, equivalent to >660 km mantle depths, and pressures above 23 GPa, where it can form 25% of the bulk. The incorporation of Al into stishovite leads to significant changes to its phase diagram and its ability to take up H2O. For instance, it halves the pressure required for its rutile- to CaCl2-type transformation, which exhibits significant elastic softening and may be seismically observable. We currently lack any information on the influence of Fe and Ti on the elastic properties and post-s...
Partners
Description
Al-bearing stishovite is considered to be the main H2O-bearing silicate phase present in recycled subducted oceanic crust (i.e. eclogite) at uppermost lower mantle conditions, equivalent to >660 km mantle depths, and pressures above 23 GPa, where it can form 25% of the bulk. The incorporation of Al into stishovite leads to significant changes to its phase diagram and its ability to take up H2O. For instance, it halves the pressure required for its rutile- to CaCl2-type transformation, which exhibits significant elastic softening and may be seismically observable. We currently lack any information on the influence of Fe and Ti on the elastic properties and post-s...
Partners
Any information missing or wrong?Report an Issue