Dynamic crystallization of chondrule melts of porphyritic olivine composition - Textures experimental and natural

Details Dynamic crystallization of chondrule melts of porphyritic olivine composition - Textures experimental and natural Dynamic crystallization of chondrule melts of porphyritic olivine composition - Textures experimental and natural

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53..461l&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 53, Feb. 1989, p. 461-470.

Computer Science

39

Chondrule, Olivine, Porphyrins, Recrystallization, Textures, Crystal Structure, Dendritic Crystals, Nucleation, Phase Transformations, Solid Phases, Meteorites, Crystallization, Chondrules, Melts, Olivine, Composition, Porphyritic Texture, Sample, Meteorite, Texture, Experiments, Analogs, Nucleation, Cooling, Parameters, Density, Crystals, Shape, Procedure, Temperature, Photomicrographs, Chemistry, Minerals, Comparisons, Pyroxene, Formation, Laboratory Studies

Scientific paper

A full range of textures characteristic for porphyritic olivine chondrules was reproduced in melts of the same composition, crystallized under dynamic crystallization conditions (under controlled cooling), as determined by electron microprobe analyses. The primary differences between the natural and experimentally produced porphyritic olivine textures were the nature and the extent of matrix crystallization, which reflected the subsolidus or low-temperature cooling history. The most confining limits on the chondrule-forming process were found to be the presence of crystalline precursors for the chondrule melts and the upper temperature limit of melting.

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