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| Keywords: The Quarterly journal of the Geological Society of London (13935386282).jpg 274 PROCEEDIN GS OF THE GEOLOGICAL SOCIETY Feb 7 <br> At Invernettie near Peterhead see Quart Journ Geol Soc vol <br> xiv p 518 1858 the base of the section shows fine stratified clay <br> and sand free from stones above which there is a thick mass of <br> rough pebbly clay like that of Caithness containing well-scratched <br> boulders of granite sandstone c with some broken sea-shells <br> which also show traces of glacial scratching Here then we have <br> a mass of unstratified drift closely resembling that of Caithness <br> and from its position above the fine laminated clay apparently later <br> than at least a part of the glacial-marine beds <br> But the glacial deposits at King-Edward in Aberdeenshire throw <br> still more light upon the relations of the Caithness beds Some <br> sections recently laid open there have enabled me to understand <br> their arrangement far better than formerly At this locality there <br> are deep masses of unstratified pebbly mud of a dark-gTcy colour <br> very hard and firm containing stones some of which are ice-worn <br> and striated and fragments of shells which are likewise occasionally <br> scratched It is in short so like the Caithness Drift in every re- <br> spect � in colour texture and organic contents � that I can perceive <br> no difference between them It has been called the Boulder-day <br> by Mr Eobert Chambers who visited the locality in 1855 Besides <br> this coarse stony mud there are some beds of fine stratified sand <br> which often contain remains of shells in considerable abundance <br> most of them broken but many of them entire The bivalves <br> always occur in detached pieces and want the epidermis as if they <br> had been washed about by water This I believe is the bed that <br> yielded Hugh Miller's specimens and from which I have obtained <br> most of the species enumerated from King-Edward in my paper on <br> the last geological changes in Scotland But there is another bed <br> of fine dark-grey silt free from stones containing Arctic shells en- <br> tire and apparently in situ with the epidermis on The Tellina <br> calcaria occurs here of large size with both valves connected by the <br> ligament and shut also Leda Natica and others ; they are very <br> sparingly dispersed in the silt which contains streaks of black car- <br> bonaceous matter proceeding probably from the decay of seaweed <br> It also contains Foraminifera This bed of silt I noticed in 1857 ; <br> Eig 6 � Section at King-Edward Aberdeenshire <br> 1 Valley-gravel <br> 2 Pebbly clay <br> 3 Fine sand with shells <br> 4 Fine silt with shells in situ <br> 5 Rock <br> See ' Proceedings of Royal Society of Edinburgh ' Dec 17 1865 36164703 111477 51125 Page 274 Text v 22 http //www biodiversitylibrary org/page/36164703 1866 Geological Society of London NameFound Foraminifera NameConfirmed Foraminifera EOLID 2869058 NameBankID 5953016 NameFound Natica NameConfirmed Natica EOLID 58662 NameBankID 2684906 NameFound Tellina calcaria Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 22 1866 Geology Periodicals Smithsonian Libraries bhl page 36164703 dc identifier http //biodiversitylibrary org/page/36164703 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 N02/13935386282 2015-08-26 06 55 11 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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