Keywords: The Quarterly journal of the Geological Society of London (12826287285).jpg 168 PROCEEDINGS OF THE GEOLOGICAL SOCIETY June 17 <br> formation referred to is well exposed resting unconformably on these <br> older beds at a low angle The first bed seen in the cliffs is a coarse <br> conglomerate or breccia composed of slightly rounded fragments <br> Some of these were evidently derived from the older red sandstone <br> below I had no hesitation in identifying others with the quartzite of <br> the neighbouring mountains though often of a softer texture and <br> more like a white sandstone than the hard vitreous rocks of Ullapool <br> and Assynt More interesting were the fragments of limestone <br> often of a blue colour and compact at others reddish white and more <br> crystalline which made up a large portion of some beds These <br> again I regarded as derived from the limestone that overlies the <br> quartzite series ; and as the fragments were from two to four inches <br> in diameter and had apparently undergone less alteration than the <br> rock where still seen in situ I had hopes that they might contain <br> some recognizable petrifactions With this view I examined a large <br> number but did not succeed in finding any trace of organization <br> Above this conglomerate or breccia are strata of a soft friable <br> sandstone forming the larger part of the deposit It is generally of <br> a red colour in other places reddish white or again red mottled with <br> green and blue In some parts it contains much calcareous matter <br> effervescing strongly with acids and appears to be easily acted on by <br> the sea and atmosphere the surface having that carious and cor- <br> roded aspect so common among red sandstones <br> These newer beds dip at about 10° to N W true ; and as shown <br> in the subjoined sections have been deposited amid the broken ends <br> of the older sandstones The newer rock forms a natural archway <br> see fig supported on walls of the older rock and partly converted <br> by the fishermen on the coast into a rude hut to shelter themselves <br> and their implements from the weather As shown in the figure <br> the shore is here covered with huge boulders of the older red sand- <br> stones of granite and the green-coloured gneiss or hornblende rock <br> common in the mountains in the interior <br> This newer sandstone is of very limited dimensions being soon <br> cut off towards the west by lofty cliffs of the older red sandstone <br> forming the high land towards the extremity of the peninsula It <br> also does not extend far into the interior where the older rock is soon 36214134 111684 51125 Page 168 Text v 14 http //www biodiversitylibrary org/page/36214134 1858 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 14 1858 Geology Periodicals Smithsonian Libraries bhl page 36214134 dc identifier http //biodiversitylibrary org/page/36214134 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-28 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12826287285 2015-08-26 17 57 21 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1858 Photos uploaded from Flickr by Fæ using a script |