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| Keywords: The Quarterly journal of the Geological Society of London (12734320944).jpg of the <br> glacial phenomena of Maine says the horsebacks are unquestionably <br> of a moraine nature and yet they are not moraines in the ordinary <br> sense of the term Some of these horsebacks run from north to <br> south ; but occasionally they trend from east to west This he <br> says is the case where a morainic accumulation of loose materials <br> may have been pushed forward along the margin in front of an ex- <br> tensive sheet of ice moving southward and then left unchanged by <br> the subsequent retreat northward of the whole mass I conceive <br> that such horsebacks running east and west may be compared to <br> terminal moraines which as is is well known owe their origin to <br> oscillations of the front end of a glacier pushing forward a mass of <br> loose materials thus throwing it up into a transverse ridge and then <br> melting away to some point further back Agassiz in the Atlantic <br> Monthly Feb March 1867 He makes no mention of any <br> marine fossils occurring in these horseback ridges and does not seem <br> to think that the sea was concerned in their formation I may also <br> mention that some of these American ridges occur in the region of <br> Under the name of Osar it would seem that deposits of more than one kind <br> have been described perhaps of different ages and various modes of formation 35766236 110599 51125 Page 330 Text v 30 http //www biodiversitylibrary org/page/35766236 1874 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 30 1874 Geology Periodicals Smithsonian Libraries bhl page 35766236 dc identifier http //biodiversitylibrary org/page/35766236 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12734320944 2015-08-26 19 54 47 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1874 Photos uploaded from Flickr by Fæ using a script | ||||
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