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III.—On Rock-Staining

Published online by Cambridge University Press:  01 May 2009

J. Clifton Ward
Affiliation:
Associate of the Royal School of Mines; Of the Geological Survey of England and Wales.

Extract

In a paper on “The Permian Beds of Yorkshire”, Mr. Lucas maintains: 1st, that the present western edge of the Magnesian Limestone, at all events to the north of Ripon, marks the old shoreline; 2nd, that the iron and other salts found in Permian deposits were derived from the neighbouring grit and limestone land; 3rd, that the colouring-matter, as it was brought down, stained the rocks forming the bed of the inland sea, and hence the purple and red colour of the grit and other beds between Knaresborough and Leeds.

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Type
Original Articles
Copyright
Copyright © Cambridge University Press 1872

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