Measurements of the thermal properties of rocks under extreme conditions

Details Measurements of the thermal properties of rocks under extreme conditions Measurements of the thermal properties of rocks under extreme conditions

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pepi...22..267s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 22, Issue 3-4, p. 267-271.

Physics

1

Scientific paper

Thermal conductivity or thermal diffusivity were measured for some rock samples using a modified Angstroem or an impulse method. Up to 8 kbar, the investigations were performed under hydrostatic conditions. For higher pressures and high temperatures, a quasihydrostatic pressure generation was used. Differences in the lower pressure range were found. In many cases the thermal conductivity increases linearly with rising pressure from a rate of around 10-3 up to around 10-2 kbar-1. The temperature-dependence of the thermal diffusivity was often proportional to the reciprocal absolute temperature. The two opposite effects will be partly compensated in investigations of the depth-dependence. As a result of both influences, the thermal diffusivity seems to pass through a minimum.

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