Siderophile elements in planetary mantles and the origin of the moon

Details Siderophile elements in planetary mantles and the origin of the moon Siderophile elements in planetary mantles and the origin of the moon

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92..377d&link_type=abstract

(Lunar and Planetary Institute, NASA, AAS, et al., Lunar and Planetary Science Conference, 17th, Houston, TX, Mar. 17-21, 1986)

Physics

6

Lunar Evolution, Metallicity, Planetary Composition, Planetary Mantles, Abundance, Deposition, Earth Mantle, Projectiles, Terrestrial Planets

Scientific paper

The collisional ejection and the coaccretion hypotheses of lunar origin are examined in the context of theories of planetary accretion and of siderophile element abundances in planetary mantles. The information concerning the possible dynamical environments within which the terrestrial planets may have grown and the known abundances of siderophile and chalcophile elements in the mantles of the earth, the moon, and the hypothetical shergottite parent body is used to evaluate the existing hypotheses of lunar origin. The analysis indicates that none of the existing theories concerning lunar origin is fully consistent with observed siderophile element abundances in the lunar and terrestrial mantles.

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