MAKE A MEME
View Large Image
| View Original: | The_Quarterly_journal_of_the_Geological_Society_of_London_(12684820014).jpg (1773x3200) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: The Quarterly journal of the Geological Society of London (12684820014).jpg 396 PROCEEDINGS OP THE GEOLOGICAL SOCIETY Juiie 16 <br> The author then describes the occurrence of gold in the Lower <br> Silurian rocks It is found disseminated in small foliaceous particles <br> or in round grains in the quartz-veins which traverse the greywacke <br> sandstone and shale in a direction generally at right angles to their <br> strike ; and also in the detritus of the same rock A specimen <br> weighing 240 grains was lately found The district furnishing the <br> gold lies to the north of the zone of black slate which runs from <br> Stobo through the summit- cutting of the Caledonian Railway and <br> Glenochar in the direction of Cairn Ryan It is greatly disturbed <br> not only by the quartz-veins but by dykes of felspar and greenstone ; <br> and the dip is the reverse of that which usually prevails Mr Hark- <br> ness believes that the occurrence of gold is not connected with any <br> particular portion of the Silurian series but rather with the presence <br> of the quartz- veins and the influence of the plutonic rocks <br> 5 On the Ornithoidichnites of the Wealden <br> By S H Beckles Esq <br> Communicated by Sir C Lyell V P G S <br> Abstract <br> Since the publication in January 1851 of the notice of the pecu- <br> liar trifid bodies occurring in the Hastings rock the author has <br> added several specimens to his collection some of which appear to <br> afford additional evidence in favour of the opinion of their being <br> natural casts of the prints of birds' feet <br> To the west of St Leonard' sf the specimens occur on small blocks <br> lying on the beach and subjected to tidal action These as yet have <br> presented solitary ornithoidichnites only To the east of Hastings <br> however the trifid bodies are found under more favourable circum- <br> stances At a distance of between six and seven miles from St Leo- <br> nard's immense blocks of stone some of them several tons in weight <br> lie for some distance along the beach in confused masses immediately <br> at the base of the cliff and above high-Water-mark On these blocks <br> the ornithoidichnites are frequently found and sometimes in pairs <br> or groups The following specimens have been selected as being <br> of most interest <br> Fig 1 is the outline of one of Ym 1 <br> two of these bodies which were <br> found on the surface of a block <br> measuring 7 ft 3 in by 4 ft They <br> differed from the usual form in <br> having a posterior elongation <br> which was about two -thirds the <br> length of the trifid and less <br> than half its height ” projecting <br> Quart Journ Geol Soc vol vii p 117 <br> f One specimen was obtained also in digging the Railway tunnel between <br> St Leonard's and Hastings 35461466 109911 51125 Page 396 Text v 8 http //www biodiversitylibrary org/page/35461466 1852 Geological Society of London NameFound Ornithoidichnites NameConfirmed Ornithoidichnites NameBankID 4270283 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461466 dc identifier http //biodiversitylibrary org/page/35461466 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 N02/12684820014 2015-08-27 12 59 44 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 | ||||
.jpg){kind=link}
