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VII.—The Dimetain of St. Davids

Published online by Cambridge University Press:  01 May 2009

T. Mellard Reade
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Extract

Having been lately at St. Davids, I made some observations in relation to the Porth-lisky granite or Dimetian of Dr. Hicks, which may be worth recording in the pages of the Geological Magazine.

Perhaps it may be well for me to state that previous to my examination I had no bias whatever in favour of any of the explanations of the geology of St. Davids which have been offered by Hicks, Geikie, or Blake.

Type
Original Articles
Information
Geological Magazine , Volume 4 , Issue 12 , December 1887 , pp. 558 - 560
Copyright
Copyright © Cambridge University Press 1887

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References

page 558 note 1 Pre-Cambrian Rocks of Pembrokeshire, Q.J.G.S. vol. xl. p. 560.Google Scholar

page 559 note 1 Q.J.G.S. vol. xl. p. 532.Google Scholar

page 559 note 2 The rock is very like the grauwaekes of Wigtonshire. Hicks calls it greenish sandstone, Geikie green shale; it is of an intermediate constitution, but I adopt the term shale.

page 560 note 1 I use the term “vein” because it best describes the form in which these remnants of the shale occur.