MAKE A MEME
View Large Image
| View Original: | The_Quarterly_journal_of_the_Geological_Society_of_London_(12961188135).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 (12961188135).jpg 1869 <br> JOASS SUTHERLAND GOLD-FIELD <br> 319 <br> gneissose strata fig 2 In a paper On the Metamorphic <br> Rocks of the Banffshire coast the Scarabins and a portion of <br> rig 1 ” Section showing Granite in Mica-schist at Kil-Donnan Lodge <br> 12 1 2 1 <br> 1 Micaceous beds dipping N E 2 Granite b <br> Pig 2 ” Oranitiform rock in decomposed Gneiss Saisgitl <br> JMMTlJIEjm <br> Mi <br> mi <br> 1 Decomposed gneissose rocks dipping S S W and E S E <br> 2 G-ranitoid rock c <br> East Sutherland read before the Geological Society in May 1862 <br> Prof Harkness says ” ' The correspondence of the strike of the plu- <br> toiiic masses with that of the metamorphic rocks has been noticed <br> in connexion with these several rocks in Banffshire In Sutherland <br> it is even more apparent and supports the inference that here plu- <br> tonic masses do not perform the office of axes Their mode of <br> occurrence rather tends to the conclusion that the sedimentary rocks <br> were elevated flexurcd and contorted previous to the period when <br> the granites made their appearance in the sedimentary rocks and <br> that the granites have conformed in their course to the strike of the <br> previously elevated strata There are here abundant features which <br> would support the conclusion that granite is in this district rather <br> the result of an excessive amount of metamorphic action than a plu- <br> tonic rock as regards its origin I venture to think that the <br> coarse-grained porphyritic granite of the Ord a should perhaps be <br> regarded as truly plutonic and associated with upheaval from its <br> coincidence in strike with a great line of fault which traverses Scot- <br> land from N E to S W along the great Caledonian valley <br> It is true indeed that instead of dipping away from this supposed <br> plutonic and upheaving mass the strata to the N W dip towards it <br> becoming almost vertical as they approach the line of contact This <br> however might be accounted for on the supposition that the up- <br> heaved and disrupted rocks already dipping towards the intrusive <br> mass would until it hardened and could support them dip still <br> more decidedly in the same direction as the result of their weight ; 36103180 111288 51125 Page 319 Text v 25 http //www biodiversitylibrary org/page/36103180 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 36103180 dc identifier http //biodiversitylibrary org/page/36103180 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 N02/12961188135 2015-08-26 15 53 54 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}
