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| Keywords: The Quarterly journal of the Geological Society of London (12645195185).jpg 338 <br> PROCEEDINGS OF THE GEOLOGICAL SOCIETY Feb 21 <br> merely a result of the mixture of the soft surface of the gypsum <br> with the mechanical detritus first deposited ou it <br> 7 On the opposite side of the creek which makes a small break <br> in the section is a thick bed of marl whose dip appears to be the <br> same with that of the gypsum In general character it resembles <br> the marl underlying the gypsum In some parts it is greenish and <br> homogeneous in texture ; in other parts it is brecciated and some layers <br> haA'e a brownish colour and shaly texture In some parts it is highly <br> gypseous and contains layers of granular gypsum one of which is <br> black its colour being due to a small proportion of coaly or bitumi- <br> nous matter <br> 8 Beyond the marl the shore is occupied for a short space by <br> boulder clay Beyond this it shows a great thickness of dark shales <br> with calcareous bands containing a few small shells ; they dip to the <br> E S E at a high angle and overlie the gypsum They are succeeded <br> by a thick band of very hard grey and brownish sandstones and shales <br> containing a few fragments of plants stained by carbonate of copper <br> These are again overlaid by dark shales and these by an enormous <br> thickness of grey and brown sandstone and shale Some of the shales <br> in this part of the section have assumed a kind of slaty or rather <br> prismatic structure which I have endeavoured to represent in the <br> Fig 3 <br> Shales with prismatic structure <br> sketch fig 3 <br> At Ship Harbour four miles di- <br> stant from Plaister Cove the series <br> last mentioned is seen to contain <br> thick beds of grey flag and finely <br> laminated shale and also a bed of <br> black shale with shells of Modiola <br> and Cypris The coast sections <br> show no beds higher in the series <br> than these last; but farther in- <br> land they appear to be succeeded <br> m ascending order by a great de- <br> posit of grey sandstone and shale <br> containing a bed of limestone and a <br> smaller bed of gypsum the former <br> abounding in Prodiicta Lyelli and <br> other characteristic shells of the <br> lower carboniferous system These <br> are followed by true coal-measures <br> containing Lepidodendron Cala- <br> mites Sigillaria Stigmaria c <br> In examining this section an observer is struck by the contrast <br> between the hardened and altered sandstones and shales and the soft <br> light-coloured marls associated with the gypsum Though not <br> uncommon in the gypsiferous series this contrast is in the case of <br> Plaister Cove more striking than usual in consequence of the com- <br> paratively high state of induration of the sandstones and shales It <br> The ' Millstone grit' of Mr Brown see his paper on Cape Breton Jouinal <br> of Geol Soc vol i p 211 <br> Dip of beds S 5° East <br> a Joints strike E and W Dip S <br> b Shale with prismatic structure 35268988 109512 51125 Page 338 Text v 5 http //www biodiversitylibrary org/page/35268988 1849 Geological Society of London NameFound Cypris NameConfirmed Cypris EOLID 14512 NameBankID 2698202 NameFound Lepidodendron NameConfirmed Lepidodendron EOLID 13132167 NameBankID 4921583 NameFound Lyelli NameConfirmed Lyelli NameBankID 3415658 NameFound Modiola NameConfirmed Modiola EOLID 71417 NameBankID 2647821 NameFound Shales NameFound Sigillaria NameConfirmed Sigillaria EOLID 13132168 NameBankID 4343184 NameFound Stigmaria NameConfirmed Stigmaria EOLID 6133541 NameBankID 4853119 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 5 1849 Geology Periodicals Smithsonian Libraries bhl page 35268988 dc identifier http //biodiversitylibrary org/page/35268988 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 N02/12645195185 2015-08-27 10 52 05 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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