Abstract
The thermal diffusivity, D, and its temperature dependence of Oman harzburgite rock and its major mineral olivine have been evaluated from the basic properties such as seismic velocities, density, and Debye temperature. The Arrheniustype temperature dependence of the diffusivity was utilized to evaluate the heat of formation, ΔH D. The diffusivity values, 1.80mm 2.s -1 and 2.1mm 2.s -1 obtained at room temperature for harzburgite and olivine, respectively, are consistent with available data. The diffusivity values for Oman harzburgite are overestimated by an amount of 0.27mm 2.s -1 relative to those of PNG harzburgite. The ΔH D value (-2.40 kJ.mol -1) for harzburgite rock of the Oman ophiolite suite is comparable with that (-2.90 kJ.mol -1) of the harzburgite rock of Papua New Guinea. The disagreements in the thermal diffusivity and heat of formation values may be partly due to ignoring the effect of pyroxene in Oman harzburgite.
Original language | English |
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Pages (from-to) | 2139-2147 |
Number of pages | 9 |
Journal | International Journal of Thermophysics |
Volume | 32 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2011 |
Keywords
- Debye temperature
- Heat of formation
- Seismic velocities
- Thermal diffusivity
ASJC Scopus subject areas
- Condensed Matter Physics