Mathematics – Logic
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..62...91j&link_type=abstract
Earth and Planetary Science Letters, Volume 62, Issue 1, p. 91-103.
Mathematics
Logic
55
Scientific paper
The physical properties (ϱ, K, K') of the adiabatically decompressed lower mantle are interpreted in terms of an (Mg,Fe)SiO3 perovskite + magnesiowüstite mineralogy. The approach employed in this paper involves the removal of the relatively better characterised magnesiowüstite component from the two-phase mixture in order to highlight the physical properties required of the perovskite phase for consistency between the seismological data and any proposed compositional model. It is concluded that a wide tradeoff (emphasized by Davies [1]) between composition, temperature and the physical properties (especially thermal expansion) of the perovskite phase accommodates most recently proposed compositional models including Ringwood's [2] pyrolite and the more silicic models of Burdick and Anderson [3], Anderson [4], Sawamoto [5], Butler and Anderson [6], Liu [7,8] and Watt and Ahrens [9].
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