Abstract
I THANK Mr. Jizba for directing my attention to the fact that a negatively skewed distribution which “one would expect to find in Nature” has been suggested. There are other statistical types of negatively skewed distributions, but whether any of these or that proposed by Jizba describes the data under consideration better than the ‘double-normal’ description proposed by me1has yet to be ascertained. It has been my experience, both with respect to the data under consideration (silica in Japanese granitic rocks) and to several sets of other data2,3 (silica in basalt + diabase; potassium in granites, and in potassium-feldspar from granites and gneisses from southern Norway), that the observations are very satisfactorily described by the ‘double-normal’ procedure.
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Ahrens, L. H., Nature, 198, 373 (1963).
Ahrens, L. H., Geochim. Cosmochim. Acta (in the press).
Ahrens, L. H., Geochim. Cosmochim. Acta (submitted for publication).
Green, E. J., Geochim. Cosmochim. Acta (in the press).
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AHRENS, L. Negatively Skewed Distributions of Silica and Potassium in Igneous Rocks. Nature 201, 1313 (1964). https://doi.org/10.1038/2011313b0
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DOI: https://doi.org/10.1038/2011313b0
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