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| Keywords: The Quarterly journal of the Geological Society of London (12684283395).jpg 324 PROCEEDINGS OF THE GEOLOGICAL SOCIETY May 19 <br> not entirely in age with the Barton Bagshot and Bracklesham beds <br> of the London and Hampshire basins and with the Sables moyens <br> Calcaire grossievy and part of the Sables inferieurs of the Parisian <br> series The two districts where I studied them principally were the <br> neighbourhood of Brussels and that of Cassel in French Flanders <br> 1 Eocene Tertiary Strata of Cassel near Dunkirk Hill of Cassel <br> Mont Noir and Hill of Boeschepe <br> I shall first describe the Cassel district because some of the Eocene <br> strata there occupy a somewhat higher position than any fossiliferous <br> strata older than the Limburg series known at present in other parts <br> of French Flanders and Belgium <br> The town of Cassel situated about twenty miles S S E of Dunkirk <br> see Map PI XVII stands on the summit of a hill 515 English feet <br> 157 metres above the level of the sea This hill rises on its north <br> south and west sides very abruptly from the surrounding plain which <br> is about 400 feet below the level of the top of the hill The railway- <br> station K fig 4 at the western base of the hill has been ascer- <br> tained to be 40 metres 131 English feet above the sea The Hill <br> of Cassel is the most western of a small chain which extends ten <br> or twelve miles in a south-easterly direction into Belgium the town <br> of Ypres being situated near its eastern extremity These hills are <br> all of very similar composition geologically speaking although the <br> Hill of Cassel displays upon the whole the greatest number of well- <br> characterized subdivisions of the tertiary series It will be useful <br> therefore to consider it as a type and to compare the others with it <br> Fig 4 ” Section of the Hill of Cassel <br> Les Recollets E <br> B2 <br> B 2 Diest sands <br> El e Ferruginous sands upper part of E 1 <br> Laeken / Sandy glauconite middle part of E 1 <br> beds \ g Black band with iVwrn t «Wo/ariw« <br> F 2 \ <br> ž – l f - um Icevigatus bed <br> russeis f - Green marls and underlying sands with Num Icevigatus <br> E 3 Sands clays c Lower Nummulitic <br> F 1 London Clay with septaria Bored to a depth of 320 feet <br> K Cassel railway- station <br> beds <br> This hill like all the others is capped with ferruginous sands and <br> sandstone doubtlessly belonging to the Diest sands B 2 Table I <br> p 279 and fig 4 as usual barren of fossils Their thickness at Cassel <br> cannot be measured but on the summit of the hill of Mont Noir near <br> Bailleul about fourteen miles to the south-east see Map PI XVII <br> fig 1 this formation is seen to be 20 feet thick In that hill which <br> is 430 feet above the level of the sea the Diest sands consist at <br> their base of a conglomerate of flint-pebbles coated with hydrate of 35461378 109911 51125 Page 324 Text v 8 http //www biodiversitylibrary org/page/35461378 1852 Geological Society of London NameFound Icevigatus Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461378 dc identifier http //biodiversitylibrary org/page/35461378 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12684283395 2015-08-27 12 53 25 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1852 Photos uploaded from Flickr by Fæ using a script | ||||
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