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| Keywords: The Quarterly journal of the Geological Society of London (12645138115).jpg 1S48 <br> MTIRCHISON ON THE STRUCTURE OF THE ALPS <br> 195 <br> S' <br> s; <br> ¢ Ploq <br> ¢U3M3S <br> S '»' <br> M <br> the upper greensand c and the nummuhte <br> rocks / is precisely in the same place as the <br> inoceramus limestone of Thones in Savoy <br> before described and that both are clearly re- <br> presentatives of the white chalk of iNorthern <br> 5 Europe <br> g This sewer-kalk rises up on nearly all sides <br> H of the beautiful valley of Schwyz I refer to <br> it the grand red and white peaks of the My- <br> then which overlook the town of Schwyz <br> so well known to all lovers of the picturesque <br> These masses of red and mottled grey and <br> white limestone strongly resemble the scaglia <br> or Italian equivalent of the chalk and have <br> no sort of resemblance to any other known <br> S; limestone in the Swiss Alps They also <br> I § clearly overlie all the older limestones ju- <br> g rassic and neocomian ; I therefore unhesi- <br> S S3 tatinglv refer them to the white chalk ; and <br> –ºÂ§ ¢ the more so because they are linked on to <br> the superior nummulitic and flysch forma- <br> tions On the northern flank of the smaller <br> peak in ascending to the Hacken pass we <br> crossed over masses of schist and impure <br> limestone with white veins which formed the <br> external envelope of the slope and next over <br> g green-grained calciferous grits with Nummu- <br> S lites planospira N rotularis N Biaritza- <br> i na and Orbitolites discus ; the thick shells <br> S of the latter resembling little layers of calc- <br> I spar ; but we also detected a specimen of <br> Inoceramus in the fragments of limestone <br> which had fallen from the cliifs The up- <br> heaval however of the Mythen has been ac- <br> companied by so much dislocation around it <br> and such enormous subsidences have taken <br> place on the taluses that no regularity of <br> succession can be detected ; nor could the <br> above order be stated if the adjacent rocks <br> when in their normal positions as before <br> cited in fig 11 had not afforded us a true <br> key to the structure of the tract There <br> is in fact just the same appearance of a <br> general inversion of the formations on the <br> We passed the Mythen on the north by the <br> Hacken pass in our route to Einsiedeln and retm-ned <br> by Brunnen and the Holzeck pass The latter is <br> the grandest scene and is the point from whence <br> the summit is alone accessible 35268839 109512 51125 Page 195 Text v 5 http //www biodiversitylibrary org/page/35268839 1849 Geological Society of London NameFound Inoceramus NameConfirmed Inoceramus EOLID 4747366 NameBankID 4205663 NameFound Nummulina rotularis NameConfirmed Nummulina EOLID 27483402 NameBankID 4261488 NameFound Orbitolites discus Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 5 1849 Geology Periodicals Smithsonian Libraries bhl page 35268839 dc identifier http //biodiversitylibrary org/page/35268839 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-20 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12645138115 2015-08-27 10 52 10 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1849 Photos uploaded from Flickr by Fæ using a script | ||||
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