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The frequency-distribution of igneous rocks. I. Frequency-distribution of the major oxides in analyses of igneous rocks

Published online by Cambridge University Press:  14 March 2018

W. Alferd Richardson  and
G. Sneesby
W. Alferd Richardson
Affiliation:
University College, Nottingham
G. Sneesby
Affiliation:
University College, Nottingham
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Extract

The quantitative distribution of igneous rocks has recently assumed a place of importance in petrogenic discussions. This is due largely to the influence of Daly, who made a survey of the areal distribution of rock types as shown by their outcrops on published maps, and reached the well-known conclusion that intrusions are overwhelmingly granitic in composition, and that extrusions arc largely basaltic. If further research should firmly establish this result, it will unquestionably be a fact of the first order of importance of which any general theory of petrogenesis must take cognizance.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 19 , Issue 97 , June 1922 , pp. 303 - 313
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1922

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References

page 303 note 1 R. A. Daly, Igneous Rocks and their Origin, New York and London, 1914, chap. iii.

page 304 note 1 Washington, H. S., The chemistry of tim earth's crust, Journ. Franklin Inst., 1920, vol. 190, p. 770.CrossRefGoogle Scholar [Min. Abstr., vol. 1, p. 160.]

page 304 note 2 H. S. Washington, Chemical analyses of igneous rocks, published from 1884 to 1913. U.S. Geol. Survey, 1917, Prof. paper 99.

page 304 note 3 H. S. Washington, ibid., published from 1884 to 1900. U.S. Geol. Survey, 1903, Prof. paper 14.

page 305 note 1 Pearson, Karl, Phil. Trans. Roy. Soc., Ser. A, 1895, vol. 186, p. 343 CrossRefGoogle Scholar.

page 305 note 2 Cross, , Iddings, , Pirsson, , and Washington, , Journ. Geol. Chicago, 1902, vol. 10, p. 555 CrossRefGoogle Scholar.

page 307 note 1 For types of distribution the reader may be referred to U. Yule, Introduction to the theory of statistics, London, 1919, chap. vi

page 307 note 2 Harker, A., Natural History of Igneous Rocks, London, 1909, p. 148 Google Scholar.

page 307 note 3 Washington, H. S., Journ. Franklin Inst., 1920, vol. 190, p. 778 CrossRefGoogle Scholar.

page 310 note 1 Washington, H. S., Journ. Franklin Inst. 1920, vol. 190, p. 773 CrossRefGoogle Scholar.

page 312 note 1 The alumina curve was published in Min. Mag., 1921, vol. 19, p. 131, fig. 1.

page 312 note 2 R. A, Daly, loc. cit., p. 52.