Abstract
Total degassing 40Ar/39Ar age determinations have been made on a concentrate of fresh feldspar from lapilli in a pumice–lapilli-tuff of the Nkalabong Fm., Lower Omo Basin, Ethiopia.
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Mitchell, J. G., Geochim. Cosmochim. Acta, 32, 781 (1968).
Dunham, K. C., Fitch, J. F., Ineson, P. R., Miller, J. A., and Mitchell, J. G., Proc. Roy. Soc. A, 307, 251 (1968).
Fitch, F. J., Miller, J. A., and Mitchell, J. G., Data for Orogenic Studies, 1 (edit. by Spencer, A.) (Geological Society, London, 1969, in the press).
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FITCH, F., MILLER, J. Age Determinations on Feldspar from the Lower Omo Basin. Nature 222, 1143 (1969). https://doi.org/10.1038/2221143a0
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DOI: https://doi.org/10.1038/2221143a0
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