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| Keywords: The Quarterly journal of the Geological Society of London (12645629494).jpg 1848 MURCHISON ON THE STRUCTURE OF THE ALPS <br> 205 <br> A glance at this diagram fig 17 will sufficiently explain the <br> case TT 1 i-i <br> Fig 17 <br> Right bank of the Iller <br> N N E Grunten S S W <br> Kammer-Eck C <br> Molasse <br> Fault <br> Eocene <br> Blolasse and nagelflue <br> Flysch <br> Nummulitic limestone alter- <br> nating with flysch <br> Transition band with Gryphsea <br> Cretaceous <br> b <br> Sonthofen <br> c cd e f f f g <br> Inoceramus limestone or chalk <br> Green sandstone and gault <br> White quartzose sandstone <br> Upper neocomian limestone <br> Caprotina ammonia <br> Lower neocomian limestone <br> The lowest visible rocks as seen in the escarpments on the north <br> and north-east faces of the Grunten a of fig 17 are shaly dark <br> grey thin-bedded compact limestone with a little iron and nodules <br> of black flint alternating repeatedly with dark shale Some of the <br> beds contain so much chlorite that like rocks in two other zones <br> higher in the series they become grass-green when bruised by the <br> hammer though previously they are simply dull grey calcareous grits <br> or impure limestones with schists With the exception of an ammo- <br> nite M Brunnerf and myself found no fossils in this rock There <br> can however be no doubt that it is the lower neocomian of Swiss geo- <br> logists which lithologically it resembles and like which it graduates <br> up into and is at once overlaid by the true upper neocomian white <br> limestone The latter rock b which as has been stated forms so <br> clear a horizon throughout large regions of the external calcareous <br> chain of the Alps is here as elsewhere a thick-bedded compact <br> light grey limestone weathering white in the cliifs ; the surface being <br> distinguished by innumerable white lines occasionally defining the <br> segments of the shell of the Caprotina ammonia and other fossils <br> Usually indeed these fossil outlines are the hardest portions of the <br> rock and stand out in the form of chert Veins of white calc spar <br> also traverse the strata This white limestone or upper neocomian <br> constitutes the highest point of the double-peaked Grunten a narrow <br> broken wall of limestone trending from north-east to south-west the <br> beds of which dip rapidly to the south-west The consequence is <br> that in following the top of the crest from these limestone summits to <br> another point called the Hohe Wand where a cross is erected and <br> thence down to the highest houses in an upland gorge called the <br> Gundalpe Hiitte you pass successively from the neocomian above <br> described to other overlying formations The rock c immediately <br> resting upon the upper neocomian limestone is a lightish grey <br> brownish and even a whitish siliceous or quartzose sandstone Find- <br> ing this rock in other sections on the sides of this mountain as well <br> as upon the summit and always in this position viz overlying the <br> limestone recognised as the upper neocomian of the Alps ; and <br> t This name has been misprinted Briinner in the preceding pages <br> VOL V ” PART I Q 35268849 109512 51125 Page 205 Text v 5 http //www biodiversitylibrary org/page/35268849 1849 Geological Society of London NameFound Caprotina ammonia NameFound Inoceramus NameConfirmed Inoceramus EOLID 4747366 NameBankID 4205663 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 5 1849 Geology Periodicals Smithsonian Libraries bhl page 35268849 dc identifier http //biodiversitylibrary org/page/35268849 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 N02/12645629494 2015-08-27 10 57 37 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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