Size and shape of near-spherical Allegan chondrules

Details Size and shape of near-spherical Allegan chondrules Size and shape of near-spherical Allegan chondrules

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978e%26psl..38..385m&link_type=abstract

Earth and Planetary Science Letters, vol. 38, no. 2, Feb. 15, 1978, p. 385-390.

Physics

6

Chondrule, Meteorites, Particle Size Distribution, Surface Geometry, Chondrites, Histograms, Mass Distribution, Shapes, Size Determination, Spheroids

Scientific paper

Chondrules were extracted from a disaggregated sample of the Allegan meteorite. Individual chondrules were examined with apparatus incorporating two orthogonal binocular microscopes, and their three major axes measured. Maximum chondrule diameters ranged from 0.15 to 2.75 mm with a peak in distribution between 0.35 and 0.75 mm. The chondrule size distribution was found not to conform to Rosin's law. The chondrules were found to depart from sphericity by only small amounts. The authors still believe that the melting of nebula dust-ball agglomerates by some high-energy event was the most probable mechanism for the formation of chondrules.

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