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| Keywords: The Quarterly journal of the Geological Society of London (13958556763).jpg 1866 JAMIESON CAITHNESS 275 <br> but owing to the want of good sections the arrangement of these <br> various deposits was then obscure It is however as follows ” <br> Commencing at the surface we have ” Thickness <br> in feet <br> 1st Water- worn gravel and sand stratified often rather coarse and <br> pebbly and somewhat ferruginous Contains no fossils so far <br> as I have seen 10 to 25 <br> 2nd Unstratified pebbly mud of a dark-grey tint hard and diffi- <br> cult to pierce The stones in it are of small size but numerous <br> and some of them glacially scratched In the upper part I <br> could see no shells ; but shell-fragments occur in the lower part <br> increasing in numbers towards the base Some of the shell- <br> fragments show distinct traces of glacial action 20 to 30 <br> 3rd Fine brownish sand in some places rich in shells This sand <br> is interstratified with the upper part of the subjacent bed 1 to 2 <br> 4th Fine dark-grey silt free from stones containing Arctic shells <br> complete and apparently in situ; they are however mostly <br> decayed and somewhat crushed so that it is difficult to extract <br> them This silt is very firm as if much compressed and the <br> greater proportion of it consists of fine muddy sand The base <br> of this bed has not been exposed but it has been excavated by <br> Mr James Runciman who was so good as to lay it open at my <br> request to a depth of 10 feet No difierence in the quality is <br> to be seen to this depth ; no stones The upper surface of this <br> silt is about 150 feet above the sea <br> Here then we have a thick mass of drift exactly like that of <br> Caithness clearly overlying a glacial-marine silt with shells in situ <br> The broken shells in this coarse upper drift seem to have been derived <br> from the beds below In one part of the bank I found at the bot- <br> tom of the coarse pebbly mud beds of fine silt with broken shells <br> and confused stratification ; these seemed to be ordinary marine <br> beds disturbed from their original position by the agency that lodged <br> the overlying drift Where this disturbing action was so great as to <br> completely break up and destroy the fine silty layers then we should <br> have sections like those of Caithness where the mass is unstratified <br> from top to bottom and I believe in many places of the King-Edward <br> banks this will be found to be the case Large boulders are rare in <br> the King-Edward district but I saw one of Greywacke from 3 to <br> 4 feet in length which seemed to have dropped out of the coarse <br> pebbly mud <br> Eig 7 ” Section across King-Edward valley <br> K Stream S <br> Â¥/;r/» / - s – ' / <br> Line of sea-level <br> A Grreywacke and clay-slate <br> B Glacial deposits <br> In a notice of these King-Edward the name is a corruption of <br> Kinedart beds in the 14th vol of the Quart Joum Geol Soc 1858 <br> p 525 I remarked that the shells in the fine silt were often crushed <br> in a remarkable way as if by sudden pressure from above 36164704 111477 51125 Page 275 Text v 22 http //www biodiversitylibrary org/page/36164704 1866 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 22 1866 Geology Periodicals Smithsonian Libraries bhl page 36164704 dc identifier http //biodiversitylibrary org/page/36164704 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13958556763 2015-08-26 06 56 25 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1866 Photos uploaded from Flickr by Fæ using a script | ||||
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