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I.—On the Amygdaloids of the Tynemouth Dyke1

Published online by Cambridge University Press:  01 May 2009

J. J. H. Teall
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Extract

In a paper published in the Quarterly Journal of the Geological Society for 1884, I gave some account of the Tynemouth Dyke. In that paper, however, I omitted to describe one feature, connected with the microscopic structure of the dyke, because at the time of writing I did not understand it. A short time ago I had occasion to re-examine my preparations, when my attention was again directed to the feature in question; and this time an explanation suggested itself which appears to be in every respect satisfactory. The main object of this communication is to supplement my already published description by giving an account of the feature to which I have referred, and which may be briefly described as the occurrence of spherical patches of interstitial matter. (See Pl. XIV. Fig. 1.)

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 11 , November 1889 , pp. 481 - 483
Copyright
Copyright © Cambridge University Press 1889

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Footnotes

1

Read at the Brit. Assoc., Newcastle-on-Tyne, in Section C. (Geology), Sept. 1889.

References

page 481 note 2 Petrological Notes on some North of England Dykes, vol. xl. p. 233.

page 481 note 3 See fig. 1, plate xiii. accompanying the paper already referred to.