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| Keywords: The Quarterly journal of the Geological Society of London (13071204653).jpg 484 <br> PROCEEDINGS OP THE GEOLOGICAL SOCIETY <br> I' <br> be <br> that the Carboniferous Limestone at this <br> point formed the wave-washed cliff of the <br> Liassic sea and that its caverns were <br> subsequently filled by Liassic deposits A <br> longitudinal section at their junction <br> would then show similar conditions ; but <br> we cannot strictly adopt this idea from <br> the fact that the same phenomena prevail <br> throughout the whole line of the Car- <br> boniferous Limestone and that the veins <br> are continued to unascertained depths <br> The section now described was as it ap- <br> peared on the visit of the Members of the <br> British Association in 1863 ; but every <br> subsequent working alters its precise fea- <br> tures though its general character re- <br> mains the same <br> 1 Immediately to the south-east and <br> parallel to the Marston road may be <br> seen a vertical face of limestone contain- <br> ing Spirifera Walcottii S Munsterii <br> Echini c unquestionably of Liassic age <br> This appears to be a continuation of the <br> long face of similar limestone noticed <br> higher up the road On entering the <br> quarry this limestone is seen to pass <br> down as a vertical dyke partly covered <br> by vegetation on the south but which <br> appears to be about 6 feet thick It is <br> composed of a wavy thinly laminated <br> yellow or bluish material occasionally <br> conglomeratic and somewhat resembling <br> marble It has on its north side <br> 2 A breadth of 10 feet of regularly <br> bedded Carboniferous Limestone showing <br> a considerable inclination to the south <br> where it is cut off by the above <br> 3 A nearly vertical vein the sides of <br> which are composed of red chocolate or <br> variegated impure limestone sometimes <br> with a central fissure stained with oxide <br> of iron or containing ironstone at others <br> filled with crystallized carbonate of lime <br> 9 inches <br> 4 A thin band of Carboniferous Lime- <br> stone with organic remains giving the <br> appearance of a vertical vein of that lime- <br> stone 1 foot 3 inches <br> 5 Dyke of conglomeratic Lias passing <br> to the top with occasional patches of 36345239 112028 51125 Page 484 Text v 23 http //www biodiversitylibrary org/page/36345239 1867 Geological Society of London NameFound Echini NameConfirmed Echini NameFound Spirifera NameConfirmed Spirifera NameBankID 4349332 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 23 1867 Geology Periodicals Smithsonian Libraries bhl page 36345239 dc identifier http //biodiversitylibrary org/page/36345239 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-10 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13071204653 2015-08-26 13 53 58 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1867 Photos uploaded from Flickr by Fæ using a script | ||||
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