Other
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975e%26psl..26..140k&link_type=abstract
Earth and Planetary Science Letters, vol. 26, no. 2, June 1975, p. 140-144. Research supported by the Oesterreichische National
Other
7
Astronomical Models, Carbonaceous Meteorites, Chondrule, Condensates, Meteoritic Composition, Solar System, Aluminum, Calcium, Chondrites, Planetary Evolution
Scientific paper
One large (8.5 mm) chondrule in the Bali carbonaceous chondrite is strongly enriched in refractory elements as are the white objects in Allende which are widely believed to be 'primitive' condensates. However, detailed investigations show the Bali chondrule to have an element distribution opposite to that predicted by the 'primitive condensation' models. Refractory elements like Ti and Al are enriched at or near the surface of the chondrule. The contents of some volatile elements, e.g., Na, Si, and Cr, are higher in the central portion. It is suggested that this chondrule - and similar objects in other C-chondrites - originated in one, or more likely several, impact events and that the element distribution is the result of volatilization and condensation.
Fredriksson Kimmo
Hoinkes Georg
Kurat Gero
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