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Stability of (Mg,Fe)SiO3 perovskite and the structure of the lowermost mantle

Stixrude, L; Bukowinski, MST; (1992) Stability of (Mg,Fe)SiO3 perovskite and the structure of the lowermost mantle. Geophysical Research Letters , 19 (10) 1057 - 1060. 10.1029/92GL01066. Green open access

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Abstract

Thermodynamic analysis shows that (Mg,Fe)SiO3 perovskite is stable throughout the likely pressure, temperature and compositional regime of the Earth's mantle. The breakdown of perovskite to its constituent oxides appears unlikely, even under the extreme conditions of the core-mantle boundary. This reaction had been proposed to reconcile estimates of silicate melting with seismic observation and proposed geotherms.

Type: Article
Title: Stability of (Mg,Fe)SiO3 perovskite and the structure of the lowermost mantle
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/92GL01066
Publisher version: http://dx.doi.org/10.1029/92GL01066
Language: English
Additional information: Copyright 1992 by the American Geophysical Union
Keywords: Phase-transitions, Core, Iron, Gigapascals, Boundary, State, Model, MgO, CaO
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/82951
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