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| Keywords: The Quarterly journal of the Geological Society of London (14072651292).jpg 300 <br> EEV J F BLAKE ON THE <br> considerable quantity of dark-green rock diabase which has <br> fissured and streaked the granite by its intrusions and has torn <br> off <br> fragments <br> of this rock of felsite and of conglomerate in- <br> Fig 5 ” Plan of Ogof-Llesugn <br> Hi- i Granite <br> \xt Felsite <br> Diabase <br> K °'l Conglomerate <br> Ii i Shales <br> Sandstones and slates <br> discriminately and borne them upwards It is only therefore <br> by chance that the granite and conglomerate ever come together <br> i e where the diabase has not intruded between them There may <br> be a foot or two of such a conjunction on the sides of the fissure ; <br> but the greater part of this is bounded by the diabase The <br> masses on the foreshore are absolutely not in contact with the granite <br> at all but surrounded by the diabase and altered by it to a <br> much more solid rock The granite and felsite are treated in the <br> same way It seems to me an interesting spot to compare the <br> appearances of an intrusive and a faulted junction since both are so <br> plainly shown and so clearly contrasted that the truly faulted <br> nature of the junction between the granite and the Cambrian cannot 36941093 113697 51125 Page 300 Text 40 http //www biodiversitylibrary org/page/36941093 1884 Geological Society of London NameFound Shales Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 40 1884 Geology Periodicals Smithsonian Libraries bhl page 36941093 dc identifier http //biodiversitylibrary org/page/36941093 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-30 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/14072651292 2015-08-26 05 52 26 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1884 Photos uploaded from Flickr by Fæ using a script | ||||
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