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More anomalies from the Allende Meteorite: Samarium

McCulloch, M. T. and Wasserburg, G. J. (1978) More anomalies from the Allende Meteorite: Samarium. Geophysical Research Letters, 5 (7). pp. 599-602. ISSN 0094-8276. doi:10.1029/GL005i007p00599.

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The isotopic composition of Sm has been measured in the Allende inclusions Cl and EK1-4-1. These inclusions were previously shown to have isotopic anomalies for the elements O, Mg, Ca, Ba and Nd. Sample Cl has a normal Sm isotopic composition except for the “p-process” isotope ^(144)Sm, which has an excess of 15±5 parts in 10^4. Sample EK1-4-1 was found to have Sm with a highly aberrant composition, indicating excess at all unshielded isotopes and an excess at ^(144)Sm. These data confirm the previous evidence for an addition of “r-process” isotopes to this material and also indicate an addition to the “p-process” isotope ^(144)Sm. From the observations on Cl it is inferred that the “p-process” addition is decoupled from the “r-process” addition.

Item Type:Article
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URLURL TypeDescription DOIArticle
Wasserburg, G. J.0000-0002-7957-8029
Additional Information:© 1978 by the American Geophysical Union. Received May 19, 1978; accepted June 5, 1978. We thank D. A. Papanastassiou for his constructive criticisms of this manuscript. This work was supported by NASA grant NGL 05-002-188 and NSF grant 76-83685. Contribution 3093(275) Div. of Geological and Planetary Sciences.
Funding AgencyGrant Number
NASANGL 05-002-188
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences3093
Lunatic Asylum Lab275
Issue or Number:7
Record Number:CaltechAUTHORS:20130828-142328961
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Official Citation:(1978), M. T. McCulloch, G. J. Wasserburg; More anomalies from the Allende Meteorite: Samarium. Geophysical Research Letters, 5: 599–602. doi: 10.1029/GL005i007p00599
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40979
Deposited By: Tony Diaz
Deposited On:20 Sep 2013 22:01
Last Modified:10 Nov 2021 04:24

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