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VI.—Berthelot's Principle applied to Magmatic Concentration1

Published online by Cambridge University Press:  01 May 2009

Alfred Harker
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Extract

It is now a recognized fact that many igneous intrusions, especially of basic rocks, grow more basic in composition from the centre to the margin. This type, of what Vogt terms “magmatic concentration,” has been discussed by several geologists, who agree in supposing that in such cases a magma, originally homogeneous, has become differentiated by the migration of the less soluble (more basic) ingredients to the cooler marginal region of the magma-reservoir.

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 12 , December 1893 , pp. 546 - 547
Copyright
Copyright © Cambridge University Press 1893

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Footnotes

1

A paper read before the Brit. Assoc., Section C, at the Nottingham meeting.

References

page 546 note 2 Annales de Chimie (5), vol. xxii. pp. 293–297 (1881).Google Scholar

page 546 note 3 Zeits. f. phys. Cuemie, vol. i. (1887).Google Scholar

page 547 note 1 Mécanique Chimique, vol. i. p. xxix.Google Scholar

page 547 note 2 Amer. Journ. Science (3), vol. xxxi. p 191.Google Scholar

page 547 note 3 Zeits. f. prakt. Geol. vol. i. p. 275 (1893).Google Scholar