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| Keywords: The Quarterly journal of the Geological Society of London (12645634564).jpg 1848 MURCHISON ON THE STRUCTURE OF THE ALPS 209 <br> Returning to the chief section fig 17 I specially call attention to <br> the ascending succession as seen to the south-east of Burgberg above <br> the intermediate gryphite zone e As on the east flank of the <br> Grimten fig 18 so here we see schist and thin bands of dark flyscli <br> with white veins intercalated between the greensand and impure lime- <br> stone with the Gryphsea and the lower zone of nummulites The <br> mineralogical transition is here equally perfect nummulites are also <br> abundant together with Pectens Spondyli and other fossils of <br> the zone the beds being also ferriferous but offering some local <br> peculiarities such as small cavities in the green sandy calciferous <br> grits This band / is overlaid by glossy light grey and dark <br> schists that have been worn into a small depression which is fol- <br> lowed by a second ridge of nummulitic rock The mass of this is a <br> greenish yellowish sandstone or sandy calc grit which graduates <br> into a hard siliceous limestone containing large Echini Pectens <br> Terebratulae as well as Nummulites and is very peculiar from the <br> small flakes of chlorite which occupy the structural divisions of some <br> of the foraminifera Shale and thin stone bands recur in another <br> slight depression followed by another course of nummulitic limestone <br> of grey colour but also containing iron whereon an ancient castle <br> stands ; then another depression in shale c ; and lastly a great band <br> of nummulitic limestone of about 150 feet in thickness which being <br> thin-bedded sandy and subconcretionary in its lower parts passes <br> up into very thick beds of hard grey limestone charged with Num- <br> mulina millecaput Orbitolites ;c This limestone when followed <br> to the Starzlach plunges under other courses of schist and sandy <br> shale forming part of the great overlying masses that occupy both <br> banks of the river Iller between Sonthofen and Ober Maiselstein <br> but which are denuded in the plain of Sonthofen <br> I may complete this ascending section of the formations in the <br> valley of the Iller by stating that although a consecutive ascending <br> order is observable in the hills to the east the same order cannot be <br> followed without breaks curvatures and reversals in the chief de- <br> pression or on its western side It is manifest however that all the <br> sandstones schists and bastard limestones which constitute the flysch <br> on both sides of the valley between Sonthofen on the north and the <br> Schwarzenberg are parts of that great group the lower portion of <br> which inosculates with the nummulitic limestones See fig 19 <br> Fig 19 <br> Left hank of the Iller above Sonthofen <br> N N W Bolghen Schwarzenberg S S E <br> Valley of <br> Oberstdorf <br> The small Nmnmulina placentula Desh N intermedia D'Arch in this <br> band is I believe the same species knoM'n in the nummulitic limestones of 35268853 109512 51125 Page 209 Text v 5 http //www biodiversitylibrary org/page/35268853 1849 Geological Society of London NameFound Echini NameConfirmed Echini NameFound Nmnmulina placentula NameFound Nummulites NameConfirmed Nummulites EOLID 6817785 NameBankID 3399048 NameFound Nummulites intermedia NameFound Orbitolites NameConfirmed Orbitolites EOLID 6817858 NameBankID 3399208 NameFound Spondyli Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 5 1849 Geology Periodicals Smithsonian Libraries bhl page 35268853 dc identifier http //biodiversitylibrary org/page/35268853 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 N02/12645634564 2015-08-27 10 53 35 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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