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McCulloch & Wasserburg 1978
McCulloch, M.T. and Wasserburg, G.J. (1978). More anomalies from the Allende meteorite: Samarium. Geophysical Research Letters 5: doi: 10.1029/GL005i007p00599. issn: 0094-8276.

The isotopic composition of Sm has been measured in the Allende inclusions C1 and EK1-4-1. These inclusions were previously shown to have isotopic anomalies for the elements O, Mg, Ca, Ba and Nd. Sample C1 has a normal Sm isotopic composition except for the ''p-process'' isotope 144Sm, which has an excess of 15¿5 parts in 104. Sample EK1-4-1 was found to have Sm with a highly aberrant composition, indicating excess at all unshielded isotopes and an excess at 144Sm. These data confirm the previous evidence for an additon of ''r-process'' isotopes to this material and also indicate an addition to the ''p-process'' isotope 144Sm. From the observations on C1 it is inferred that the ''p-process,'' addition is decoupled from the ''r-process'' addition.

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Geophysical Research Letters
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American Geophysical Union
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