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| Keywords: The Quarterly journal of the Geological Society of London (13889764988).jpg BASALTIC FORMATIOX IN ICELAND 95 <br> where great masses of relatively receat lava debouching from moun- <br> tain valleys on to plains had produced a very sejisible subsidence <br> leading to the formation of extensive lakes In the case of Thing- <br> valla the plain has sunk at least iOJ feet leaving perpendicular <br> cliffs of lava on the slopes at its northern eud from which the <br> central mass has been torn These may possibly throw some light <br> on the formation of Lough Neagh J <br> HusAViK Marine and Freshwater Beds <br> By far the most important of the sedimentary deposits connected <br> with the basalts occurs on the coast 7 miles N E of Husavik in <br> N lat jQ 10' They rest upon basalt or a basaltic breccia In <br> approaching them ffom Husavik the first exposure occurs in a <br> grassy cirque named Hringvershujlft or the little round valley <br> The escarpment is about 260 feet high but slopes at an angle of 45° <br> and its base is somewhere about 100 feet above the sea-level The <br> fossiliferous beds rest upoa a mass of greenish grey clayey material <br> succeeded by 20 feet of pale more or less laminated sandstone with <br> plant-remains These proved unfortunately to be all of a rush-like <br> nature much macerated and utterly valueless Three feet of lignite <br> followed and then 10 feet more sandstone with similar plants <br> and then four beds of lignite in succession each 1 foot thick and <br> Pig 1 ” Cliff-section on coast 9 miles N E of HusaviTc <br> a Glacial deposits h Greenish-grey tuff <br> c Sandy clay with broken shells d Sandy clay unfossiliferous <br> e Sandy clay with fossils <br> / Sandy clay without fossils with a band of laminated sandstone with <br> green grains <br> g Four bands with Cyprina the bottom layer with Actceon Noce and <br> Cardium echinatum <br> h Bands of broken shells with Cypri/ia Actceon and Cardium <br> i Continuous band of comminuted shells of variable thickness average <br> 2 feet <br> i2 37046933 114009 51125 Page 95 Text 41 http //www biodiversitylibrary org/page/37046933 1885 Geological Society of London NameFound Cardium NameConfirmed Cardium EOLID 50301 NameBankID 2693257 NameFound Cardium echinatum NameConfirmed Cardium echinatum EOLID 448785 NameBankID 511516 NameFound Cyprina NameConfirmed Cyprina NameBankID 4132765 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 41 1885 Geology Periodicals Smithsonian Libraries bhl page 37046933 dc identifier http //biodiversitylibrary org/page/37046933 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 N02/13889764988 2015-08-26 04 58 51 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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