MAKE A MEME
View Large Image
| View Original: | The_Quarterly_journal_of_the_Geological_Society_of_London_(12961349113).jpg (1185x2056) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: The Quarterly journal of the Geological Society of London (12961349113).jpg 330 <br> PEOCEEDIN'GS OF THE GEOLOGICAL SOCIETY <br> June 9 <br> apparently a number of branches entering the country fig 4 From <br> this vein likewise the reef has not suflfered any displacement or <br> change On being sunk through the granite was observed to have <br> Fig 4 ” Section of Reef showing second Granite-vein <br> in a line with the smooth eastern wall of the reef a distinct joint <br> or crack filled with black clayey matter This feature was so de- <br> ceptive that the miners believed the vein really terminated right at <br> the eastern wall ; and as a similar joint though not so marked was <br> observed on the western wall also the belief generally gained <br> ground and it was at last positively asserted that this second gra- <br> nite-vein did not penetrate into the country but formed so to <br> speak an intrinsic portion of the reef However through a late <br> break in the mine causing a great portion of the reef and country <br> to cave in at the surface the fallacy of this assertion is clearly <br> proved since the branches into which the vein divides can plainly <br> be seen entering the country The sinking through this granite <br> vein in the Speculation Company's ground led principally to the <br> proper understanding of the nature of the previously mentioned <br> horse and in consequence to the discovery of the easterly vein <br> of the reef Not knowing that the horse expands and thus <br> causes the easterly vein to disappear towards the surface the com- <br> pany worked down the westerly vein and penetrated through the <br> granite But on finding the reef beneath of a far greater width <br> save a thin parting of metamorphic sandstone in the centre and <br> also striking the smooth eastern wall that had not been observed <br> above the granite it was at once rightly supposed that what had <br> been thus far considered the country was in reality the horse <br> which suddenly contracted beneath the granite vein thereby causing <br> the eastern and western quartz-veins to join A cross cut and a <br> rise through the granite up the eastern wall were as already men- 36103191 111288 51125 Page 330 Text v 25 http //www biodiversitylibrary org/page/36103191 1869 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 25 1869 Geology Periodicals Smithsonian Libraries bhl page 36103191 dc identifier http //biodiversitylibrary org/page/36103191 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-06 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12961349113 2015-08-26 15 53 40 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1869 Photos uploaded from Flickr by Fæ using a script | ||||
.jpg){kind=link}
