Computer Science
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gecoa..51.1297t&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 51, May 1987, p. 1297-1309.
Computer Science
13
Abundance, Lunar Composition, Lunar Evolution, Nebulae, Rare Gases, Refractory Materials, Deposition, Earth-Moon System, Jupiter (Planet), Mars (Planet), Saturn (Planet), Volatility
Scientific paper
Geochemical consequences of a lunar origin by a giant collision were discussed. The processes of the formation of terrestrial planets in general were examined, with emphasis on the uniqueness of the earth-moon system. The following issues were addressed: (1) the presence or absence of a gas-rich solar nebula during accretion of the inner planets, (2) the possible existence of Mars-sized precursor bodies, (3) the volatile contents of the terrestrial planets, (4) the anomalously high angular momentum of the earth-moon system, (5) the lunar composition and evolution, and (6) the lunar-earth mantle comparisons. Among several current hypotheses (which include capture, fission, and double planet hypotheses) the large-impactor hypothesis appears to be the only one which accounts for the singular composition of the moon and the unique nature of the earth-moon system.
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