MAKE A MEME
View Large Image
| View Original: | The_Quarterly_journal_of_the_Geological_Society_of_London_(12646220864).jpg (1225x2046) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: The Quarterly journal of the Geological Society of London (12646220864).jpg NICOL SOUTHERN GEAMPIANS <br> 205 <br> side of the glen consists of gneiss dipping 50° or 70° to S 40°-50° E <br> Further up the red granite still full of veins of porphyry crosses <br> the stream and is well exposed at a small fall in the river Still <br> higher the valley contracts and gneiss forms the lower portion on <br> both sides ; the beds much contorted but dipping on the whole about <br> 70° to S 42° E <br> Fig 10 � Porphyry Vein in Granite Ben Nevis <br> Length about 30 feet <br> The lower portion of Glen Nevis thus consists essentially of gneiss <br> dipping more regularly than might have been expected in the <br> vicinity of such a mass of granite to the S E The mountains on <br> that the south-east side of the glen appear generally to be capped <br> by quartzite which ought thus to overlie the gneiss A great part <br> of this region however is now a mere desolate deer-forest without <br> house or path so that even in the finest seasons � and these too <br> rarely occur for the geologist � it is difficult of examination In one <br> of the ravines on the south side of the Glen the following section <br> was observed fig 11 <br> Fig 11 - <br> -Section of the South side of Glen Nevis <br> N <br> a Quartzite <br> b Gneiss <br> c Red Granite <br> d Mica-slate and Gneiss <br> e Red Granite <br> The bottom of the valley is red granite � a branch of that in Ben <br> Nevis It is covered by a fine-grained gneiss or hornstone probably <br> altered by the igneous rock which dips at 60° to S 27° E and above <br> passes into chloritous mica-slates some dark others light grey and <br> also dipping at 65° to S 27° E These slates are in turn covered <br> by a bed of red granite perhaps from 100 to 150 yards wide which <br> runs along the face of the southern hills and in another ravine is <br> traversed by a vein of the dark Ben Nevis porphyry The granite 35328166 109632 51125 Page 205 Text v 19 http //www biodiversitylibrary org/page/35328166 1863 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 19 1863 Geology Periodicals Smithsonian Libraries bhl page 35328166 dc identifier http //biodiversitylibrary org/page/35328166 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-20 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12646220864 2015-08-27 11 59 45 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1863 Photos uploaded from Flickr by Fæ using a script | ||||
.jpg){kind=link}
