Chondrules, matrix and coarse-grained chondrule rims in the Allende meteorite - Origin, interrelationships, and possible precursor components

Details Chondrules, matrix and coarse-grained chondrule rims in the Allende meteorite - Origin, interrelationships, and possible precursor components Chondrules, matrix and coarse-grained chondrule rims in the Allende meteorite - Origin, interrelationships, and possible precursor components

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gecoa..51.1923r&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 51, July 1987, p. 1923-1937.

Computer Science

48

Allende Meteorite, Chondrule, Meteoritic Composition, Abundance, Matrix Materials, Mineralogy, Neutron Activation Analysis, Petrography, Rims, Meteorites, Stony Meteorites, Carbonaceous Chondrites, Cv3 Chondrites, Allende, Chondrules, Matrix, Texture, Grains, Samples, Meteorite, Rims, Origin, Formation, Parent Material, Neutron Activation Analysis, Inaa, Laboratory Studies, Leoville, Vigarano, Microprobe Methods, Compostion, Refractory Material, Lithophiles, Siderophiles, Alkalis, Metamorphism, Nebula, Matr

Scientific paper

INAA and broad-beam EMPA are used to determine the bulk compositions of 20 chondrules, 13 coarse-grained chondrule rims, and one nonporphyritic CV chondrule (NPCVC) from CV3 Allende (and of one NPCVC each from Leoville and Vigarano). The data are presented in extensive tables and graphs and analyzed in detail. Five probable chondrule precursor components are deduced, and the solar-nebula processes giving rise to them (and probably to the coarse-grained rims as well) are discussed. It is suggested that the formation of the rimmed chondrules involved nebular reheating in space, after the accretion of dusty coatings.

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