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

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

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1057s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 10, May 22, 1992, p. 1057-1060.

Other

8

Earth Mantle, Perovskites, Phase Stability (Materials), Structural Properties (Geology), Earth Planetary Structure, Phase Diagrams, Thermodynamic Properties

Scientific paper

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.

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