Temperatures in the earth's core from melting-point measurements of iron at high static pressures

Details Temperatures in the earth's core from melting-point measurements of iron at high static pressures Temperatures in the earth's core from melting-point measurements of iron at high static pressures

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.363..534b&link_type=abstract

Nature (ISSN 0028-0836), vol. 363, no. 6429, p. 534-536.

Computer Science

258

Earth Core, High Pressure, Iron, Melting Points, Static Pressure, Temperature Measurement, Laser Beams, Phase Diagrams

Scientific paper

The most reliable method for determining the temperature gradient at the earth's core is the estimation of Fe and Fe-rich compounds' melting temperature at the pressure of the inner core boundary. Attention is presently given to melting-point measurements on Fe and Fe-O compounds at up to 2 Mbar. An extrapolation of these results to 3.3 Mbar yields an inner core boundary temperature of 4850 +/- 200 K.

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