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VI.—The Picrite of Foel lwyd, Carnarvonshire

Published online by Cambridge University Press:  01 May 2009

J. E. Wynfield Rhodes
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Extract

During a short holiday to North Wales in Whit-week, 1910, I was investigating the igneous rocks to the south of Llanfairfechan, more particularly the intrusive greenstones of the Geological Survey map. Since the publication of this map, over fifty years ago, several districts within it have been investigated in greater detail, especially as to the volcanic rocks, but much remains to be done petrographically. One of these greenstones turned out to be of exceptional interest, being of a type of rock hitherto, I believe, unrecorded in North Wales, so another visit was made to it in August, 1912.

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 3 , March 1913 , pp. 108 - 109
Copyright
Copyright © Cambridge University Press 1913

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