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| Keywords: The Quarterly journal of the Geological Society of London (13889200108).jpg of ripple-marks as forming <br> features in that formation Of course if the drift was formed <br> under land-ice we should not expect to see them; but if as I <br> maintain a very large part of it has been laid down in water then <br> under favourable conditions they should be found <br> I was much pleased on examining in the early part of 1883 a section <br> in the Old-Park-Pield sand-hole at Ketley near Wellington Shrop- <br> shire to which I had been directed by my friend Dr Callaway to <br> notice in a stratified deposit of drift-sand three distinct beds of ripple- <br> marked laminae most beautifully displayed in section The following <br> is a sketch of the deposit fig 1 The position of this sand-pit is <br> Eig 1 � Section at Ketley near Wellington Shrojpshire <br> ' r rt f ' ' ' ' ~- -- -_ - Vi �' r ~ - I Finely laminated <br> -~ 7 - r ' - - - - - - '- i loamy sand <br> on the south side of Watling Street I measured one of the ripple- <br> marks in bed No 1 and found it was 9 inches from crest to <br> crest and 1 inch high ; the fall of the Avave indicated that the wind <br> producing it was from the N W The figure below fig 2 drawn <br> to a scale of inch to the foot will more fully explain its form <br> Note March 1884 � Mr Mackintosb describing a section of Boulder-clay <br> Low-level Boulder-clay at Egremont Cheshire says The surface of this bed <br> ' Middle sands ' according to him but an included sand bed according to my <br> classification presents the appearance of haA'ing been finely ripple-marked im- <br> mediately before the tranquil deposition of an inch in thickness of leaf-like <br> lamin£e which within the vertical space of a few inches graduate into typical <br> upper clay <br> Mr Jukes-Browne informs me that there is at South Ferriby in Lincolnshire <br> a bed of indurated sand a few inches thick beautifully ripple-marked on the <br> upper surface which underlies the Boulder-clay and overlies a thin bed of gravel <br> resting on the chalk It was previously described by Mr Searles Wood Q J <br> G S vol xxiv p 150 who states that there is a similar bed below the Hessle <br> clay in the Hessle quarry <br> Mr Lamplugh in reply to an inquiry says Eipple-marks are by no means <br> uncommon in our clifi sections about Bridlington being generally in beds of <br> sand and sandy clay interstratified with the Purple Boulder-clay He has <br> given an example of one of the best of them in the Geol Mag for Sept 1879 36941056 113697 51125 Page 267 Text 40 http //www biodiversitylibrary org/page/36941056 1884 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 40 1884 Geology Periodicals Smithsonian Libraries bhl page 36941056 dc identifier http //biodiversitylibrary org/page/36941056 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-30 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13889200108 2015-08-26 05 57 01 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1884 Photos uploaded from Flickr by Fæ using a script | ||||
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