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| Keywords: The Quarterly journal of the Geological Society of London (12736464044).jpg 334 <br> J F BLAKE AlfD W H HUDLESTON ON <br> wood where they are cut through by the road Here the oolites <br> are rather crystalline limestones towards the base but become creamy <br> close-grained and thin-splitting further up becoming however once <br> more crystalline and gritty as they change gradually through true <br> calcareous grits into yellow sandstones the limestones having a shell- <br> bed towards the top The yellow grits in their upper parts alternate <br> with hard blue rock and shelly beds the equivalents of the Tri- <br> gonia-he s of the Pickering quarries lying about 2 miles to the <br> south-west Ascending the S E angle of Blansby-Park woods <br> the Upper Limestones are partially revealed through the thick mat- <br> ting of undergrowth ; and finally the plateau at the top is found <br> to be held by an argillaceous form of Coral Rag The thicknesses in <br> this very complete section are pretty nearly those already given but <br> the supra-coralline beds are absent <br> These latter however together with the Upper Limestones and that <br> portion of the Middle Calcareous Grits which contain the Trigonia-he s <br> are extensively quarried at Pickering The following section fig 13 <br> is the result of a careful average of the quarries on both sides of the <br> valley as far as the workmen's cottages near the third quarry on the <br> west side North of this the Coral Rag which is barely recognizable <br> in the quarries nearest the town begins to make a better figure <br> Fig 13 ” Generalized Section at Pickering Scale 32 ft to 1 inch <br> Upper Division <br> Middle Division / <br> Coralline Oolite- \ <br> Lower Division <br> For details of the beds see table fp 335 <br> Bed of Ostrea bullata y Line of Pisolite 35818463 110705 51125 Page 334 Text 33 http //www biodiversitylibrary org/page/35818463 1877 Geological Society of London NameFound Ostrea bullata NameConfirmed Ostrea bullata Born 1778 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 33 1877 Geology Periodicals Smithsonian Libraries bhl page 35818463 dc identifier http //biodiversitylibrary org/page/35818463 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12736464044 2015-08-26 19 54 19 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1877 Photos uploaded from Flickr by Fæ using a script | ||||
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