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The origin of the 'FUN' anomalies and the high temperature inclusions in the Allende meteoriteThe discovery of isotopic anomalies in white inclusions of the meteorite Allende has led to fundamental questions concerning the origin of these anomalies and of the white inclusions themselves. An analysis of the 'FUN' anomalies in the inclusions C1 and EK1-4-1 demonstrates that these isotopic anomalies may be decomposed into individual nucleosynthetic components, which have been subjected to separate mass and component fractionations. There is no evidence that any freshly-synthesized material injected into the primitive solar nebula was of abnormal isotopic composition, or that the FUN anomalies were due to an injection of unusual material. Rather, they show the effects of large mass fractionations and an unusual mixture of normal nucleosynthetic material, likely to be in the form of interstellar grains whose size or chemistry served as a memory for the nucleosynthetic origins of their constituent atoms. Giant gaseous protoplanets, as described for the early solar nebula by Cameron (1978), are a potential site for achieving both mass and component fractionations, and for producing white inclusions in general.
Document ID
19800060247
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Consolmagno, G. J.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Cameron, A. G. W.
(Harvard-Smithsonian Center for Astrophysics Cambridge, Mass., United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1980
Publication Information
Publication: Moon and the Planets
Volume: 23
Subject Category
Lunar And Planetary Exploration
Accession Number
80A44417
Funding Number(s)
CONTRACT_GRANT: NGR-22-007-269
Distribution Limits
Public
Copyright
Other

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