Abstract
THE Hon. R. J. Strutt has advanced weighty reasons in favour of supposing radium to be confined to a certain shallow layer over the surface of the earth. To assume, however, that a heavy element is thus restricted in distribution appears to me to present difficulties. It would appear that an a priori probable reason why uranium should disintegrate more rapidly near the surface than at greater depths would bridge over the difficulty, and, if for that reason only, would deserve attention.
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JOLY, J. Radium and Geology. Nature 74, 635 (1906). https://doi.org/10.1038/074635a0
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DOI: https://doi.org/10.1038/074635a0
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