Mathematics – Logic
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981esasp.164..141w&link_type=abstract
In ESA The Solar System and its Exploration p 141-150 (SEE N82-26087 16-88)
Mathematics
Logic
Chemical Composition, Deposition, Earth (Planet), Planetary Evolution, Carbonaceous Meteorites, Earth Mantle, Moon, Silicon, Volatility
Scientific paper
The chemical composition of the inner planets and petrological type 1 carbonaceous chondrites (C1) are compared. The Earth, the Moon and eucrite parent asteroid are depleted in moderately volatile and volatile elements compared to C1 chondrites. The Earth mantle and the Moon are slightly enriched in refractory lithophile elements and in magnesium. This might be due to normalization to Si, with the Earth mantle and Moon being depleted in Si which partly entered the Earth's core in metallic form. The depletion of V, Cr, and Mn in the mantle is explained by their partial removal into the core. The similar depletion of these elements of the Moon indicates the strong genetic relationship of Earth and Moon. The compositional trends observed for the mantle indicate an inhomogeneous accretion of the Earth from a fully reduced volatile free component A followed by a highly oxidized, volatiles-containing component B.
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