More anomalies from the Allende Meteorite: Samarium
- Creators
- McCulloch, M. T.
- Wasserburg, G. J.
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.
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.Attached Files
Published - grl794.pdf
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Additional details
- Eprint ID
- 40979
- Resolver ID
- CaltechAUTHORS:20130828-142328961
- NGL 05-002-188
- NASA
- 76-83685
- NSF
- Created
-
2013-09-20Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Lunatic Asylum Lab
- Other Numbering System Identifier
- 275