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V.—On the Brecciated Bed in the Dimetian at St. Davids

Published online by Cambridge University Press:  01 May 2009

Thos. M'Kenny Hughes
Thos. M'Kenny Hughes
Affiliation:
Woodwardian Professor of Geology, Cambridge.
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Extract

In recent discussions upon the classification of the Archæan, great importance has naturally been attached to the occurrence of beds of fragmental origin. In the distinctly volcanic beds these are numerous; in the older or more highly metamorphosed portion of the group they are less frequent and their character and origin are more obscure.

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 7 , July 1883 , pp. 306 - 309
Copyright
Copyright © Cambridge University Press 1883

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References

1 History of the last Geological changes in Scotland, by Thomas F. Jamieson, F.G.S., Quart. Journ. Geol. Soc. vol. xxi. p. 178.Google Scholar

2 Recent Changes on the Coast of Maine, by N. S. Shaler, Memoirs Boston Soc. Nat. Hist. vol. ii.Google Scholar

3 Cause of the Glacial Period, by Charles Rickette, Geol. Mag. Dec. II. Vol. II. 1875, p. 573; Rev. O. Fisher, op. cit. pp. 223 and 224.Google Scholar