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III.—Some Tertiary Dykes of the Clyde Area

Published online by Cambridge University Press:  01 May 2009

G. W. Tyrrell
G. W. Tyrrell
Affiliation:
Lecturer in Mineralogy and Petrology, Glasgow University.
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Extract

The very numerous Tertiary dykes of the Clyde islands (Arran, Bute, and the Cumbraes), and of the adjacent mainland and peninsulas, have been little studied either from the geological or petrographical point of view; but they are of great interest, not only in themselves, but as providing a link between the dykes of the better known areas of the North of England, and of Skye and Mull. The material is not yet gathered on which could be based a complete account of the series. The present paper is designed to present a full description of a hitherto unrecognized type of Tertiary dyke, typically exposed in the Great Cumbrae, and to indicate its relationships to other types already described from Mull and the North of England. Furthermore, a few other dykes from the Clyde area, all of basaltic composition, will be briefly described.

Type
Original Article
Information
Geological Magazine , Volume 4 , Issue 7 , July 1917 , pp. 305 - 315
Copyright
Copyright © Cambridge University Press 1917

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References

page 305 note 1 Cat. Ind. and Col. Exhibition, 1886, p. 58, fig. 3.

page 306 note 1 See list of references at end of paper.

page 309 note 1 Iddings, Igneous Rocks, vol. i, pp. 187, 199, 1909.Google Scholar

page 311 note 1 Igneous Rocks, vol. ii, p. 106, 1913.Google Scholar

page 311 note 2 Ibid., p. 111.

page 311 note 3 Igneous Rocks and their Origin, 1914, p. 25Google Scholar.

page 312 note 1 Lacroix, A., Comptes Rendus, vol. clxiii, pp. 177–83, 213–19, 253–8, 1916Google Scholar.

page 312 note 2 Iddings, J. P., Igneous Rocks, vol. ii, pp. 106, 191, 1913Google Scholar.

page 313 note 1 I am obliged to the Geological Survey for the loan of the Cowal slides on which these remarks are based, and also for the Eskdalemuir slides.