Implications from the absence of a K-41 anomaly in an Allende inclusion

Details Implications from the absence of a K-41 anomaly in an Allende inclusion Implications from the absence of a K-41 anomaly in an Allende inclusion

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.259..549b&link_type=abstract

Nature, vol. 259, Feb. 19, 1976, p. 549, 550.

Computer Science

11

Abundance, Carbonaceous Chondrites, Meteoritic Composition, Potassium Isotopes, Radioactive Decay, Anomalies, Calcium Isotopes, Isotope Effect, Radioactive Isotopes

Scientific paper

Results are reported for a potassium isotopic analysis performed on an inclusion from the Allende carbonaceous chondrite. The analysis was carried out to test a prediction of Clayton (1975) that K-41 should be overabundant because its radioactive progenitor (Ca-41) did not decay in meteorites, but rather in interstellar grains that were later incorporated in them. The isotopic composition of potassium in the examined inclusion is found to be indistinguishable from that of terrestrial potassium, which is in sharp disagreement with the theoretical prediction. Some possibilities that could account for this discrepancy are noted.

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