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FRACTIONATION OF MODERATELY VOLATILE ELEMENTS IN ORDINARY CHONDRITES
Author(s) -
Wasson John T.,
Chou ChenLin
Publication year - 1974
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1974.tb00063.x
Subject(s) - chondrite , chondrule , nebula , formation and evolution of the solar system , settling , meteorite , ordinary chondrite , astrobiology , abundance (ecology) , chemistry , mineralogy , astrophysics , physics , stars , fishery , biology , thermodynamics
Observed differences in the abundance ratios of moderately volatile elements found in ordinary chondrites relative to CI chondrites may have resulted from a continuous loss of nebular gas from the ordinary‐chondrite formation region during condensation. If this occurred, the nebular volatility of these elements should be inversely correlated with their abundance ratios. Such a nebular gas loss can occur as a result of momentum exchange between solids and gases, as a result of interactions between the nebular gas and solar photons or particles at the surface of the nebula, or as a result of the settling of previously condensed solids to the median plane of the nebula.