Eugster, O. and Tera, F. and Wasserburg, G. J.
(1969)
Isotopic analyses of barium in meteorites and in terrestrial samples.
Journal of Geophysical Research, 74
(15).
pp. 3897-3908.
ISSN 0148-0227.
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Abstract
Isotopic composition and concentration of barium in six stone meteorites and the silicate inclusions of two iron meteorites and three terrestrial samples were measured by use of a ‘double spike’ isotopic dilution technique in order to correct for laboratory fractionation. Any differences between the abundances of the isotopes in meteoritic and terrestrial Ba were found to be less than 0.1% for all isotopes. The per cent abundances of Ba found in our work for Ba^(138), Ba^(137), Ba^(136), Ba^(135), Ba^(134), Ba^(132), and Ba^(130) are 71.699, 11.232, 7.853, 6.592, 2.417, 0.1012, and 0.1058, respectively. Because of the higher precision, these abundances should replace the currently accepted values. These results show the variations in the Ba isotopes reported by S. Umemoto (1962) to be unsubstantiated.
| Item Type: | Article |
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| Additional Information: | Copyright 1969 by the American Geophysical Union.
(Received January 24, 1969; revised April 1, 1969.)
We wish to thank D. S. Burnett for valuable discussions and suggestions and D. A. Papanastassiou for his support in the mass spectrometry. We are indebted to our colleagues who supplied meteorite samples used in this work: Pasamonte, Leedey, Forest City, and Weekeroo Station were obtained from the Nininger Meteorite Collection at the Arizona State University through the aid of C. W. Moore. El Taco was obtained from H. Hintenberger, M.P.I., Mainz, Germany. Bruderheim was given to us by L. T. Silver from a sample provided to him by R. E. Folinsbee. Nuevo Laredo was given to us by L. T. Silver. Abee was provided by J. A. V. Douglas, Geological Survey of Canada.
This work was supported by the National Science Foundation (grants GP 9114 and GP 7976).
Contribution 1606 of the California Institute of Technology. |
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| Funders: | | Funding Agency | Grant Number |
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| NSF | GP 9114 | | NSF | GP 7976 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Division of Geological Sciences | 1606 |
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| Issue or Number: | 15 |
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| Record Number: | CaltechAUTHORS:20141107-122849606 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141107-122849606 |
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| Official Citation: | Eugster, O., F. Tera, and G. J. Wasserburg (1969), Isotopic analyses of barium in meteorites and in terrestrial samples, J. Geophys. Res., 74(15), 3897–3908, doi:10.1029/JB074i015p03897. |
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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: | 51446 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
George Porter
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| Deposited On: | 07 Nov 2014 21:23 |
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| Last Modified: | 09 Mar 2020 13:19 |
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