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| Keywords: The Quarterly journal of the Geological Society of London (13205974633).jpg 258 PROCEEDINGS OF THE GEOLOGICAL SOCIETY Mar 10 <br> 1829 founded chiefly upon the occurrence of gypsum and brine <br> springs in a formation bearing considerable resemblance in lithological <br> character to the new red sandstone without any reference whatever to <br> its fossils which at that period had not been examined by competent <br> observers <br> Mr Lyell in a paper on this subject read before the Society in <br> 1843 and more recently in his Travels in America ' has clearly <br> shown from their proximity to the older rocks the great disturbances <br> which compared with the coal-measures they have undergone and <br> more particularly from their characteristic fossils that the gypsife- <br> rous strata of Nova Scotia and Cape Breton are the representatives of <br> the lower beds of the carboniferous limestone of Europe ; but hitherto <br> I am not aware that any decided example of the superposition of <br> the millstone grit and coal-measures has been observed It affords <br> me therefore much satisfaction to be able to furnish a section of the <br> strata forming a lofty cliff at Cape Dauphin the western boundary <br> of the Sydney coal-field where the carboniferous limestone and <br> associated marls containing gypsum with the millstone grit lying <br> conformably thereon are brought up to the surface within a very <br> limited horizontal space by the protrusion of the granitic ridge of <br> St Ann's as represented in the annexed cut <br> Cape <br> Q _ Dauphin <br> - ¢ S E § N W C <br> PQ O <br> mmM A IW /v V v; <br> e d <br> f The newer conglomerate <br> ; e The coal-measures <br> d The millstone grit <br> c Carboniferous limestone shales and marls containing gypsum <br> b The old conglomerate <br> a The red granite <br> The following is a section of the strata in detail from the millstone <br> grit across the carboniferous limestone and associated beds to the <br> granite in the descending order the measurements being taken at <br> right angles to the planes of stratification <br> Thickness in feet <br> 31 fMillstone grit 200 <br> 30 Finely laminated grey shales with thin bands of limestone 110 <br> '29 Slaty sandstones with traces of plants 10 <br> 28 Blue and grey shales with some thin beds of nodular limestone 120 <br> ; 27 Strong sparry limestone 6 <br> 26 Soft crumbling marls 90 <br> This conglomerate is seen in the section on page 260 to which the above <br> references also apply <br> t The coal-measures e are not seen in actual contact with the millstone grit <br> at Cape Dauphin having been abraded by the heavy surf continually beating <br> upon this exposed point but they overlie it in a more sheltered situation about <br> half a mile higher up the Strait 36932997 113687 51125 Page 258 Text v 3 http //www biodiversitylibrary org/page/36932997 1847 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 3 1847 Geology Periodicals Smithsonian Libraries bhl page 36932997 dc identifier http //biodiversitylibrary org/page/36932997 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-17 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13205974633 2015-08-26 12 55 20 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1847 Photos uploaded from Flickr by Fæ using a script | ||||
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