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.
https://resolver.caltech.edu/CaltechAUTHORS:20130828-142328961
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Abstract
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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| 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. |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NGL 05-002-188 | | NSF | 76-83685 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Division of Geological and Planetary Sciences | 3093 | | Lunatic Asylum Lab | 275 |
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| Issue or Number: | 7 |
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| DOI: | 10.1029/GL005i007p00599 |
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| Record Number: | CaltechAUTHORS:20130828-142328961 |
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| Persistent URL: | https://resolver.caltech.edu/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 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 40979 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Tony Diaz
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| Deposited On: | 20 Sep 2013 22:01 |
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| Last Modified: | 10 Nov 2021 04:24 |
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