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III.—On Rock-Staining
Published online by Cambridge University Press: 01 May 2009
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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References
page 389 note 1 See Geol. Mag. (August, 1872), Vol. IX., p. 338.
page 389 note 2 Mr. Lucas speaks, by inadvertence, of the east and west anticlinals as the Pennine, whereas the Pennine anticlinal, ranging north and south, was post-Permian in its formation, and helped to give the easterly tilt to the Magnesian Limestone.— See Prof. Hull's paper, Quart. Journ. Geol. Soc, vol xxiv., p. 323.
page 389 note 3 See my paper “On Beds of supposed Rothliegende Age, near Knaresborough”, etc. Quart. Journ. Geol. Soc, vol. xxv., p. 291.
page 390 note 1 Quart. Journ. Geol. Soc, vol. xxv., p. 293.
page 390 note 2 “On the Red Rocks of England of older date than the Trias”. Quart. Joura. Geol. Soc., vol. xxvii., p. 242.
page 390 note 3 Transactions of the Geol. Soc, 2nd series, vol. iii., p. 239.
page 390 note 4 “Notes on the Geology of Harrogate”. Quart. Journ. Geol. Soc, vol. xxi., p. 234.
page 391 note 1 Quart. Journ. Geol. Soc., vol. xxv., p. 296.
page 391 note 2 Quart. Journ. Geol. Soc., vol. xxvii., p. 242.
page 391 note 3 On Mr. Aveline's working copies over the Lower Magnesian Limestone, I find many notes of “red soil” and “red clay”.