The mantle of Mars - Some possible geological implications of its high density

Details The mantle of Mars - Some possible geological implications of its high density The mantle of Mars - Some possible geological implications of its high density

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978icar...34..512m&link_type=abstract

Icarus, vol. 34, June 1978, p. 512-536. ERDA-supported research;

Computer Science

31

Mars (Planet), Planetary Composition, Planetary Mantles, Earth Mantle, Iron Oxides, Minerals, Planetary Cores, Iron Oxides, Lava Flows, Iron, Mineralogy, Thermal History, Partial Melting, Melts, Earth, Models, Mars, Mantle, Density, Minerals, Composition

Scientific paper

The high density of the Martian mantle probably implies an iron-rich composition expressed by a higher concentration of FeO than that in the earth's mantle. Examination of high-pressure mineralogies suggests that the model Martian mantle has an oxide-garnet wehrlite phase assemblage. This mantle model would be likely to yield ultrabasic (ferrobasaltic) melts of very low viscosity. The prevalence of low-viscosity material is consistent with large eruption rate and copious lava flow on the planet. Furthermore, ferro-kimberlite volcanic ash may be an abundant constituent in the Martian soil, especially if there was much volatile material within the early accreting Mars.

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