Abstract
LORD RAYLEIGH1 reported an excess of neon (over argon) in pumice from the Lipari Islands. Dymond and Hogan2 have reported excesses of neon in mid-oceanic tholeitic basalts and have suggested that they indicate primordial neon. As the search for primordial gases in terrestrial rocks has an important bearing on our understanding of the formation and thermal history of the Earth, we decided to look at the isotopic composition of the neon in pumice from the Lipari Islands. We collected fresh specimens from the largest quarry on the islands and extracted the included gases by crushing in a vacuum line and by stepwise heating. The five noble gases were measured in a mass spectrometer.
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References
Lord Rayleigh, Proc. R. Soc., A 170, 451 (1939).
Dymond, J., and Hogan, L., Earth planet. Sci. Lett., 20, 131 (1973).
Eberhardt, P., Earth planet. Sci. Lett., 24, 182 (1974).
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BOCHSLER, P., MAZOR, E. Excess of atmospheric neon in pumice from the Islands of Lipari. Nature 257, 474–475 (1975). https://doi.org/10.1038/257474a0
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DOI: https://doi.org/10.1038/257474a0
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