High-pressure phase transformations and compressions of ilmenite and rutile, II. Geophysical implications

Details High-pressure phase transformations and compressions of ilmenite and rutile, II. Geophysical implications High-pressure phase transformations and compressions of ilmenite and rutile, II. Geophysical implications

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975pepi...10..344l&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 10, Issue 4, p. 344-347.

Physics

Scientific paper

The hypothesis that the earth's core consists of metallized mantle substances has been recently reanimated. The large volume changes which accompany the phase transformations of rutile-cubic phase and perovskite-mixed oxides for TiO2 and (Fe,Mg)TiO3, respectively, contradict the shock data for similar phase transformations in SiO2 and MgSiO3. In view of the relatively low pressure at the mantle-core boundary, this does not favor the hypothesis of a silicate or oxide core for the earth.

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