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I.—The Rocks of the Volcano of Rhobell Fawr

Published online by Cambridge University Press:  01 May 2009

Grenville A. J. Cole
Grenville A. J. Cole
Affiliation:
Royal College of Science for Ireland.
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Extract

The conclusions as to the stratigraphical relations of the volcano of Rhobell Fawr, north of Dolgelley, in Wales, which were arrived at by Mr. T. H. Holland and myself, have received kindly recognition from Sir Archibald Geikie in his Presidential Address to the Geological Society of London in 1891; and we may now consider that the great ring of Arenig volcanoes, Cader Idris, the Arans, Arenig Fawr, and Moelwyn, rose upon an area already shattered by sporadic Cambrian outbursts. After again visiting Rhobell Fawr in 1892, in company with Mr. Mervyn Marshall, I feel able to give some account of the rocks that build up that volcano and its outlying fort-like masses.

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 8 , August 1893 , pp. 337 - 345
Copyright
Copyright © Cambridge University Press 1893

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References

page 337 note 1 “On the Structure and Stratigraphical Relations of Rhobell Fawr,” GEOL. MAG. 1890, p. 447.Google Scholar

page 337 note 2 Quart. Journ. Geol. Soc. vol. xlvii. Proceedings, p. 107.Google Scholar

page 337 note 3 Mem. Geol. Survey of Great Britain, vol. iii. 2nd edit. p. 58.Google Scholar

page 342 note 1 See Cole, and Holland, , “Structure of Rhobell Fawr,” GEOL. MAG. 1890, pp. 448 and 452.Google Scholar

page 344 note 1 Cf. Hall, Marshall, GEOL. MAG. 1889, p. 480.Google Scholar

page 344 note 2 Cf. Jennings, and Williams, , “On Manod and the Moelwyns,” Quart. Journ. Geol. Soc. vol. xlvii. p. 373.Google Scholar

page 344 note 3 Loc. cit. p. 449.Google Scholar

page 345 note 1 Cole, and Jennings, , “Northern Slopes of Cader Idris,” Quart. Journ. Geol. Soc. vol. xlv. p. 427.Google Scholar

page 345 note 2 Loc. cit. p. 374.Google Scholar