MAKE A MEME
View Large Image
| View Original: | The_Quarterly_journal_of_the_Geological_Society_of_London_(13204972153).jpg (2076x1184) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: The Quarterly journal of the Geological Society of London (13204972153).jpg RECENTLY EXPOSED NEAR BEAUMARIS <br> 473 <br> denly became extremely coarse <br> the felsite fragments being some <br> 9 inches in diameter ; the gene- <br> ral appearance suggests that this <br> may be an agglomerate rather than <br> a conglomerate There is also a <br> dyke of a compact dark rock with <br> scattered crystals of whitish fel- <br> spar often about half an inch long <br> resembling very closely a dyke in <br> a quarry above the Bangor Ceme- <br> tery Beyond this spot for <br> some distance the drive crosses an <br> open field and the slope is over- <br> grown with vegetation of long <br> standing ; so as there was no pro- <br> bability of any more exposures that <br> would be of interest I did not <br> follow it further On the crest of <br> the ridge about 150 yards to the <br> N W or W of the above rocks is <br> schist of the ordinary type <br> I have examined five slides cut <br> to illustrate this series of grits ” <br> one from the mass nearest the <br> schists to represent the normal rock <br> of this part ; another from near the <br> same to examine more especially <br> the included fragments ; a third <br> from the greenish grit associated <br> with argillite near the bridge on <br> the western side ; and a fourth to <br> illustrate the red felsite grit east <br> of the bridge cut from a part <br> where the fragments are often <br> about the size of small peas We <br> find in these grains of quartz fel- <br> spar and several varieties of tra- <br> I hare not examined this microsco- <br> pically as I could not have got a speci- <br> men worth cutting without much de- <br> facement of the ice-worn surfaces The <br> Cemetery dyke lias in its ground- <br> mass a considerable family likeness to <br> the one already described but is a little <br> coarser and the augite is better pre- <br> served The larger felspar crystals ap- <br> pear to be of the same species as those <br> in the ground-mass but are more de- <br> composed and partly replaced by secon- <br> dary microliths <br> CD <br> CD <br> O <br> e-K <br> O <br> H <br> CD <br> M <br> P <br> cr <br> en <br> CD <br> P <br> to <br> o <br> o <br> M <br> P <br> <br> a <br> m <br> o <br> CD <br> 5M <br> 36929086 113681 51125 Page 473 Text 39 http //www biodiversitylibrary org/page/36929086 1883 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 39 1883 Geology Periodicals Smithsonian Libraries bhl page 36929086 dc identifier http //biodiversitylibrary org/page/36929086 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-16 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13204972153 2015-08-26 12 52 33 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1883 Photos uploaded from Flickr by Fæ using a script | ||||
.jpg){kind=link}
