Constitution of terrestrial planets

Details Constitution of terrestrial planets Constitution of terrestrial planets

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rspta.303..287w&link_type=abstract

(Royal Society, Discussion on Planetary Exploration, London, England, Nov. 4, 5, 1980.) Royal Society (London), Philosophical Tr

Computer Science

154

Earth Core, Earth Mantle, Planetary Composition, Refractory Metals, Terrestrial Planets, Abundance, Chromium, Manganese, Silicon, Vanadium, Planets, Terrestrial Planets, Composition, Comparisons, Earth, Accretion, Meteorites, Mantle, Volatiles, Enrichment, Lithophiles, Silicon, Core, Depletion, Chemistry, Origin, Formation, Refractory Material, Achondrites, Moon, Eucrites

Scientific paper

It is noted that the earth's mantle and the moon are slightly enriched in refractory lithophile elements and in magnesium. It is considered possible that this enrichment is fictitious and due only to the normalization to Si and that both the earth's mantle and the moon are depleted in Si, which partly entered the earth's core in metallic form. The striking depletion of the elements V, Cr, and Mn in the earth's mantle can also be explained by their partial removal into the core. The similar abundances of V, Cr, and Mn in the moon and the earth's mantle suggest a strong genetic relationship between the earth and the moon. Apart from their contents of metallic iron, siderophile elements, and moderately volatile and volatile elements, the earth and moon are chemically very similar. It is considered possible that, with these exceptions and that of a varying degree of oxidation, all the inner planets have a similar chemistry.

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