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| Keywords: The Quarterly journal of the Geological Society of London (13205806453).jpg 84 <br> PROCEEDINGS OF THE GEOLOGICi L SOCIETY DeC <br> Thus these most distorted <br> cases require the same expla- <br> nation as the others and can <br> be accounted for by supposing <br> them to have been subjected to <br> a pressure acting obliquely on <br> the shell and pressing it as it <br> were downwards and forwards <br> atthe same time This pressure <br> acting in a constant direction <br> upon shells scattered about <br> in different positions has pro- <br> duced the variety of extrava- <br> gant forms which are to be <br> found at South Petherwin <br> Tintagel and every other lo- <br> cality where fossils are found <br> in rocks much cut up by clea- <br> vage The oblique pressure <br> may always be resolved into <br> the same two direct forces Z <br> one forwards along the plane <br> of cleavage towards <br> the intersection of <br> the cleavage and the <br> bedding the other <br> downwards in a di- <br> rection perpendicu- <br> lar to the cleavage - t <br> These are the direc- <br> tions of the compres- <br> sion and expansion <br> previously demon- ~ <br> strated Mr Phillips <br> has apparently al- <br> luded to this oblique <br> pressure in the pass- Z <br> age already quoted <br> But the facts already <br> stated and others to <br> be brought forward 2 <br> show that his expla- <br> nation is not suffi- <br> cient to include the <br> variously complica- <br> ted eases of distor- <br> tion <br> When the <br> ding and <br> exactly coincide at <br> Tintagel the shells <br> bed- <br> d 9§BVB9f3 sdi oi <br> 3YB9b io saBla at 36932813 113687 51125 Page 84 Text v 3 http //www biodiversitylibrary org/page/36932813 1847 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 3 1847 Geology Periodicals Smithsonian Libraries bhl page 36932813 dc identifier http //biodiversitylibrary org/page/36932813 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-17 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13205806453 2015-08-26 12 51 24 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1847 Photos uploaded from Flickr by Fæ using a script | ||||
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