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| Keywords: The Quarterly journal of the Geological Society of London (12513034915).jpg 1872 <br> TIDBEMAN- ICE-SHFET EST NOETH LANCASHIRE ETC <br> 479 <br> Clitheroe Distnct ” These last have a general agreement with a <br> scratched roche moutonnee on Twiston Moor on the north-easterly <br> extension of the ridge which culminates in Pendle Hill It is a com- <br> plete parallel to those on Bowland Knotts before mentioned ; for the <br> scratches are running across the range and not from the summit of <br> Pendle the highest ground in the neighbourhood Also the scratches <br> here and those on Bowland Knotts are almost in the same straight <br> line A proof will be given under the next head that these scratches <br> were formed by ice coming from the north rather than from the south <br> In the gorge of the Calder which cuts across the Pendle range at <br> Whalley is a very fine large roche moutonnee well scratched It <br> shows pretty clearly by its form that the ice was going up the course <br> of the present river or southward not down it or northward This <br> rock as shown by the drift sections on both sides of the ravine was <br> well covered uj by a good thicknesss of Till and above that again by <br> forty feet of the middle sands and gravel; so that it must have <br> been worked by the ice of the land-ice period not by icebergs coast- <br> ice or ice-foot ” nor yet by later glaciers ; for in that case those later <br> deposits would have been ploughed out It will be seen if we put <br> together the scratches in the neighbourhood of Pendle that to the <br> north of it they appear to be deflected by that eminence and that to <br> the south they would seem to be coalescing again I can conceive <br> its being quite possible that the ice-sheet went quite over Pendle ; <br> but even then the base of the ice-stream would be influenced in its <br> course by the slopes of the ground and some such ett'ect as that <br> noticed would be produced <br> Close to the south bank of the Eibble at the junction of Starling <br> Brook about two miles above Ribchester are some scratches trending <br> Fig 1 ” Diagram sJwiving the proportion of Ice-scratches running in <br> different directions in North Lancashire Sfc <br> W E- <br> S 8° W whereas the valley is running W S W I do not think <br> these can be referred to later glaciers ; they would rather seem to 34985532 108770 51125 Page 479 Text v 28 http //www biodiversitylibrary org/page/34985532 1872 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 28 1872 Geology Periodicals Smithsonian Libraries bhl page 34985532 dc identifier http //biodiversitylibrary org/page/34985532 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-14 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12513034915 2015-08-27 10 02 36 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1872 Photos uploaded from Flickr by Fæ using a script | ||||
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