Multiplicity of chondrule heating events and the coarsening of chondrule textures

Details Multiplicity of chondrule heating events and the coarsening of chondrule textures Multiplicity of chondrule heating events and the coarsening of chondrule textures

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24.1489w&link_type=abstract

In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1489-1490 (SEE N94-20636 05-91

Computer Science

3

Chondrule, Granular Materials, Heating, Mineralogy, Textures, Glass, Meteoritic Composition, Stony Meteorites

Scientific paper

Our studies of compound chondrules show that most chondrules experienced at least two thermal events that produced appreciable amounts of melt. I suggest that chondrules were subjected to a hierarchy of brief heating events, the number increasing exponentially with decreasing intensity, and that some of intermediate intensity deposited enough heat to partially melt mesostasis glass and promote the growth of mafic mineral grains. This scenario can account for textures that require improbably low monotonic cooling rates in laboratory simulations, and also for the rarity of glassy chondrule textures despite the ease with which these are produced in the laboratory.

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