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IV.—On Sandstone Pipes in the Carboniferous Limestone at Dwlban Point, East Anglesey

Published online by Cambridge University Press:  01 May 2009

Edward Greenly
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Extract

The low, but rocky headland of Dwlban Point forms the western corner of Red Wharf Bay, on the east coast of Anglesey; and is on the coastline of the principal tract of Carboniferous rocks in the island, not very far from the boundary fault which runs out to sea beneath the sands of the bay. The Carboniferous Limestone near the Point is for the most part a light-grey, crystalline rock, with abundant crinoids, corals, and other marine fossils. There are, however, four beds of sandstone, varying from 2 to 9 feet thick, and some of the Limestone itself also contains scattered grains of quartz. The sandstones are clean white rocks, generally fine, but with occasional thin seams of small pebbles.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 1 , January 1900 , pp. 20 - 24
Copyright
Copyright © Cambridge University Press 1900

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References

page 20 note 1 Abstracts of this and of the succeeding paper were read before the British Association, Dover, 1899.

page 20 note 2 During the first examination and the mapping of this ground I was accompanied by my friend Mr. J. R. Dakyns. I should like to add also that most of the phenomena here described were noticed more than twenty years ago by Mr. G. H. Morton, F.G.S.

page 23 note 1 By Mr. P. F. Kendall, F.G.S., during the discussion at the meeting of the British Association.