Dark inclusions in Allende, Leoville, and Vigarano - Evidence for nebular oxidation of CV3 constituents

Details Dark inclusions in Allende, Leoville, and Vigarano - Evidence for nebular oxidation of CV3 constituents Dark inclusions in Allende, Leoville, and Vigarano - Evidence for nebular oxidation of CV3 constituents

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54..819j&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 54, March 1990, p. 819-830.

Mathematics

Logic

36

Allende Meteorite, Carbonaceous Chondrites, Inclusions, Meteoritic Composition, Oxidation, Oxygen Isotopes, Petrography, Petrology, Meteorites, Inclusions, Allende, Leoville, Vigarano, Oxidation, Rims, Chondrules, Cv3 Chondrites, Chondrites, Stony Meteorites, Petrology, Chemistry, Oxygen, Isotopes, Samples, Meteorite, Laboratory Studies, Chondrules, Refractory Material, Composition, Enrichment, Depletion, Iron, Potassium, Sodium, Fragments, Origin, Source, Parent Bodies, Clasts, Formation, Metamorphism, Hea

Scientific paper

The origin and the history of dark inclusions (DIs) are investigated using petrologic, chemical, and oxygen isotopic data on ten DI samples from Allende, Leoville, and Vigarano. These data indicate that the DIs of the Leoville and Vigarano are closely similar to those of Allende. The inclusions appear to be fragments of CV3 parent bodies which were processed to different degrees prior to their incorporation as clasts into the Allende, Leoville, and Vigarano chondrites. The processing homogenized the olivine compositions, presumably through heating, and also involved oxygen exchange with O-16-poorer surroundings.

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