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| Keywords: The Quarterly journal of the Geological Society of London (13204789615).jpg ROCKS OF THE NORTHERN HIGHLANDS 403 <br> Flags may crop out low down on the shore or under water from <br> beneath the Quartzite and that the fragments have been thrown <br> up by the tremendous waves which operate with such energy along <br> this exposed coast <br> At Whitten Head the rock nearest the Caledonian is the Seamy <br> Quartzite Fragments of the Annelidian variety are found lying <br> about ; but these towering precipices rising absolutely vertical for <br> nearly 500 feet forbid close investigation though a good cragsman <br> might perhaps meet with some success Something more might also <br> be done with boats ; but so heavy is the swell on these stormy shores <br> that little could be effected save in exceptionally calm weather such <br> as rarely occurs in the district <br> The region north of Hope Ferry is thus seen to confirm the clearer <br> sections further south the upper division of the Quartzite being <br> regularly overlain by the lower <br> I claim then to have proved that the Assynt series is folded <br> back upon itself for a distance of several miles south of Heilem and <br> to have shown it to be highly probable that the inversion occurs the <br> entire distance from Craig-na-faolin to Whitten Head a distance <br> of nearly 12 miles <br> C The Caledonian Gneiss brought over the inverted Assynt Series <br> by Earth-movements <br> Structure of Ben Arnaboll 756 ft figs 9 and 10 ” Good <br> sections are exposed along the dip W to E and the strike N <br> to S ” the former in the cliff south of the road from Heilem <br> to Hope ferry the latter in the precipitous escarpment over- <br> hanging the valley which separates the hill from Druim-an- <br> tenigh <br> The dip-section fig 9 represents the gneiss clearly overlying the <br> Quartzite for a breadth of over a quarter of a mile the two series <br> Fig 9 ” Section of the northern side of Ben Arnaboll <br> Scale 4 inches to 1 mile <br> e w <br> °2 f <br> being at first sight apparently conformable dipping to S S E A close <br> examination however shows that the conformity is not perfect <br> in one place the gneiss dips down onto the quartzite at a higher <br> angle and other beds of gneiss come into the angle between the <br> two At another spot further to the east the gneiss does not keep <br> The baud of quartzite in contact with the gneiss is slightly altered no 99 <br> p 418 36929010 113681 51125 Page 403 Text 39 http //www biodiversitylibrary org/page/36929010 1883 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 39 1883 Geology Periodicals Smithsonian Libraries bhl page 36929010 dc identifier http //biodiversitylibrary org/page/36929010 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-16 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13204789615 2015-08-26 12 56 31 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1883 Photos uploaded from Flickr by Fæ using a script | ||||
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