The composition and geotherm of the lower mantle: constraints from the elasticity of silicate perovskite

Details The composition and geotherm of the lower mantle: constraints from the elasticity of silicate perovskite The composition and geotherm of the lower mantle: constraints from the elasticity of silicate perovskite

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pepi..118..103d&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 118, Issue 1-2, p. 103-109.

Physics

25

Scientific paper

A newly developed parameterization of the third-order isentropic finite strain equation of states (EOS) is used in conjunction with experimental data and theoretical results on MgSiO3 perovskite. New geotherms for the lower mantle are derived by comparison with preliminary reference earth model (PREM). The geotherms are adiabatic up to 1500 km depth and super-adiabatic thereafter. A description of the critical steps in obtaining the new parameterization is also given.

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