The cooling histories of Copiapo and Landes /IA/ irons

Details The cooling histories of Copiapo and Landes /IA/ irons The cooling histories of Copiapo and Landes /IA/ irons

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...40..497b&link_type=abstract

Icarus, vol. 40, Dec. 1979, p. 497-501. Research supported by the Centre National de la Recherche Scientifique.

Computer Science

2

Cooling, Inclusions, Iron Meteorites, Meteoritic Composition, Silicates, Abundance, Fission Products, Fossils, Metallography, Mineralogy, Particle Tracks, Phosphates, Plutonium

Scientific paper

The cooling rate of one silicate inclusion from Copiapo (IA iron) was determined by means of the multiple fission-track-detector method. The preliminary value comes to 1.1 plus 0.6 or minus 0.5 deg C/my for the temperature range 350-30 C. Within the limits of errors this cooling rate agrees with the less precise value of 0.9 plus 0.8 or minus 0.5 C/my obtained for one inclusion from Landes (IA). An extrapolation of the fission-track cooling rate through the temperature interval 600-500 C gives a value of approximately 4 C/my in good agreement with metallographic data for IA irons (2-4 C/my).

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