Computer Science
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gecoa..58.1019w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 58, p. 1019
Computer Science
17
Allende Meteorite, Olivine, Spinel, Temperature Measurement, Metamorphism (Geology), Meteoritic Composition, Iron, Magnesium, Extrapolation, Diffusion Coefficient
Scientific paper
An effort is made to ascertain the degree of thermal metamorphism on the Allende parent body, through electron-probe microanalysis of the composition of olivine and coexisting spinel in type II chondrules and Fe-rich isolated olivine grains from the Allende meteorite. Modeling of Fe/Mg interdiffusion in olivine leads to an upper limit of peak metamorphic temperatures between 600 and 750 K, assuming a thermal-event duration to 1 million years.
Armstrong J. J.
Palme Herbert
Weinbruch Stephan
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