Experimental reproduction of textures of chondrules

Details Experimental reproduction of textures of chondrules Experimental reproduction of textures of chondrules

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..48..155t&link_type=abstract

Earth and Planetary Science Letters, vol. 48, no. 1, June 1980, p. 155-165.

Computer Science

19

Chondrule, Crystallization, Meteoritic Composition, Temperature Effects, Textures, Chemical Composition, Cooling, Evolution (Development), Experimentation, Microphotographs, Olivine, Silicon Dioxide, Temperature Distribution, Meteorites, Chondrules, Textures, Experiments, Crystallization, Melts, Composition, Cooling Rate, Porphyritic, Olivines, Silicon Dioxide, Models, Yamato Meteorites, Yamato-74115, Chondrites, Chemistry, Data, Samples, Meteorite, Analysis, Techniques, Temperatures, Morphology, Photomicro

Scientific paper

The textures of chondrules have been reproduced by crystallizing melts of three different compositions at 1 atm with cooling rates from 400 to 20 C/min. A porphyritic olivine texture has been formed from a melt of olivine-rich composition (SIO2 = 45 wt.%), a barred-olivine texture from melt of intermediate composition (SiO2 = 47 wt.%), and radial-olivine texture from melt of pyroxene-rich composition (SiO2 = 57 wt.%). The cooling rate for producing barred olivine is most restricted; the rate ranges from 120 to 50 C/min. The results of the experiments indicate that some of the major types of textures of chondrules can be formed with cooling rate of about 100 C/min, and that the texture varies depending on the composition of melt.

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