Stability of Fe,Al-bearing bridgmanite in the lower mantle and synthesis of pure Fe-bridgmanite | Zendy

Leyla Ismailova | Zendy; Elena Bykova | Zendy; Maxim Bykov | Zendy; Valerio Cerantola | Zendy; Catherine McCammon | Zendy; Tiziana Boffa Ballaran | Zendy; Andrei Bobrov | Zendy; Ryosuke Sinmyo | Zendy; Natalia Dubrovinskaia | Zendy; Konstantin Glazyrin | Zendy; HannsPeter Liermann | Zendy; Ilya Kupenko | Zendy; Michael Hanfland | Zendy; Clemens Prescher | Zendy; Vitali B. Prakapenka | Zendy; Volodymyr Svitlyk | Zendy; Leonid Dubrovinsky | Zendy

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Stability of Fe,Al-bearing bridgmanite in the lower mantle and synthesis of pure Fe-bridgmanite

Author(s) -

Leyla Ismailova,

Elena Bykova,

Maxim Bykov,

Valerio Cerantola,

Catherine McCammon,

Tiziana Boffa Ballaran,

Andrei Bobrov,

Ryosuke Sinmyo,

Natalia Dubrovinskaia,

Konstantin Glazyrin,

HannsPeter Liermann,

Ilya Kupenko,

Michael Hanfland,

Clemens Prescher,

Vitali B. Prakapenka,

Volodymyr Svitlyk,

Leonid Dubrovinsky

Publication year - 2016

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.1600427

Subject(s) - silicate perovskite , compressibility , geology , mantle (geology) , mineralogy , geochemistry , thermodynamics , physics

The physical and chemical properties of Earth’s mantle, as well as its dynamics and evolution, heavily depend on the phase composition of the region. On the basis of experiments in laser-heated diamond anvil cells, we demonstrate that Fe,Al-bearing bridgmanite (magnesium silicate perovskite) is stable to pressures over 120 GPa and temperatures above 3000 K. Ferric iron stabilizes Fe-rich bridgmanite suchthat we were able to synthesize pure iron bridgmanite at pressures between ~45 and 110 GPa. The compressibility of ferric iron–bearing bridgmanite is significantly different from any known bridgmanite, which has direct implications for the interpretation of seismic tomography data

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