Computer Science
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..50..181p&link_type=abstract
Earth and Planetary Science Letters, vol. 50, no. 1, Oct. 1980, p. 181-188. Research supported by the Natural Environment Resea
Computer Science
5
Carbonaceous Chondrites, Chondrule, Isotope Separation, Meteoritic Composition, Solar Corona, Strontium Isotopes, Aluminum Isotopes, Calcium Isotopes, Gas-Solid Interfaces, Geochemistry, Inclusions, Petrography, Vapor Phases, Meteorites, Allende Meteorite, Isotopes, Fractionation, Strontium, Data, Chondrules, Richardton Meteorite, Composition, Patterns, Origin, Models, Samples, Meteorite, Analysis, Techniques, Procedure, Petrography, Formation
Scientific paper
True relative Sr isotopic compositions were determined by the double-spike technique in eight olivine chondrules from Allende and one chondrule from Richardton. The Allende specimens were enriched by up to 1.4% per mass unit of light isotope, but the Richardton chondrule had an Sr content identical with the whole meteorite. The consistent light-Sr enrichment of Allende objects was explained by several model-dependent schemes; the most likely case is that of the CAI chondrules deriving their fractionated Sr from the region of the nebula made isotopically light by partial kinetic mass separation of elements in the vapor phase.
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