Origin of ureilite meteorites and implications for planetary accretion

Details Origin of ureilite meteorites and implications for planetary accretion Origin of ureilite meteorites and implications for planetary accretion

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..415s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 6, p. 415-418.

Other

38

Chondrites, Meteorites, Oxygen Isotopes, Planetary Evolution, Protoplanets, Abundance, Basalt, Breccia, Planets, Accretion, Origin, Formation, Meteorites, Stony Meteorites, Oxygen, Isotopes, Chondritic Material, Achondrites, Ureilites, Models, Asteroids, Planetesimals, Melting, Mineralogy, Heterogeneity, Basalt, Impact Effects, History, Volcanism, Comparisons, Terrestrial Planets

Scientific paper

The present analysis of the ureilite meteorites suggests that these are formed by well-understood processes, as indicated by such findings as their being partial melt residues rather than cumulates and their forming in a large chondritic body with heterogeneous O isotopic composition. Slow diffusion of the O in solid and molten silicates ensured that partial melting did not homogenize the O isotopes of the residues. These and other determinations furnish a plausible origin for ureilites as residues from the partial melting of isotopically heterogeneous chondritic material.

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