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| Keywords: The Quarterly journal of the Geological Society of London (13889888088).jpg 596 <br> C EICKETTS ON THE EKEATICS ITi THE <br> greater axis somewhat removed from the perpendicular with a <br> small detached portion lying nearly at a right angle to its original <br> position the thinner and lower part not being entirely displaced <br> through resting on a slight projection at the lower end of the <br> fracture fig 3 <br> Similar glaciated pebbles split and shattered by the frost into <br> fragments which still remain exactly in apposition are in many <br> districts buried in moraine accumulations formed on land These <br> fractures must have occurred subsequently to the envelopment of <br> the blocks in glaciers otherwise the pieces could not have con- <br> tinued so accurately in position whilst moving beneath such a burden <br> Pig 3 ” Silurian pebble split separated and dAsplaced as in situ in <br> Boulder-clay Rock Ferry One third natural size <br> Some erratics are so sculptured into forms dependent on differences <br> in their texture that the less easily disintegrated portions and the <br> harder materials filling shrinkage -joints stand prominently in relief ; <br> some are so fashioned and modelled that every bed however thin is <br> Pig 4 ” WeatJiered block from <br> Boulder-clay One third <br> natural size <br> Fig 5 ” Weathered block with <br> smoothed surfaces from <br> Boidder-clay One third <br> natural size <br> X Smoothed surfaces <br> conspicuous There exists a great similarity between some such spe- <br> cimens from the Boulder-clay and others in moraine accumulations <br> compare figs 4-7 This is remarkably the case with two from a 37047476 114009 51125 Page 596 Text 41 http //www biodiversitylibrary org/page/37047476 1885 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 41 1885 Geology Periodicals Smithsonian Libraries bhl page 37047476 dc identifier http //biodiversitylibrary org/page/37047476 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 N02/13889888088 2015-08-26 04 56 34 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1885 Photos uploaded from Flickr by Fæ using a script | ||||
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