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| Keywords: The Quarterly journal of the Geological Society of London (13204756695).jpg 368 C CALLAWAY ON THE NEWEK ONEISSTC <br> loch under Coniveall Two years ago I submitted to the Society <br> reasons for believing that the limestone at Inchnadamff was the <br> highest rock in the district ; and I showed that when followed to the <br> south-east it was seen to dip away from the so-called Upper <br> Quartzite and to form the north-eastern side of the Stronchrubie <br> basin Having minutely resurveyed the ground I beg to offer <br> what appears to me absolutely conclusive proof of my original view <br> The western slopes of Cnoc-an-drein extend between the Burn of <br> Calda and the parallel stream called Poulan-drein a breadth of over <br> a mile The junction between the Dolomite and the Upper <br> Quartzite is more or less clearly exposed in the escarpment between <br> the two burns and more distinctly in the burns themselves <br> Section on the Burn of Calda <br> Leaving the high road a little north of Inchnadamff and ascending <br> the slope towards the col between Cnoc-an-drein and Glasven we <br> first detect small faults in the Dolomite ; and a little higher up the <br> throw increases the Brown Flags much squeezed and contorted re- <br> appearing east of the Dolomite and being followed by a repetition of <br> the Dolomite in regular sequence Beyond this the evidence at first <br> sight appears to favour the old view In Calda Burn at a water- <br> Fig 2 ” Section on the Burn of Calda Scale 5 inches to 1 mile <br> fall the Dolomite somewhat contorted is seen to be succeeded and <br> seemingly overlain by quartzite Two facts however at once suggest <br> suspicion of this apparent conformity Ascending the stream we <br> find the quartzite dipping regularly to the E N E for nearly a <br> quarter of a mile ; but suddenly the dip rises and the rock is bent <br> back into a large overthrown fold fig 2 This contortion is clearly <br> seen on both sides of the burn which here forms a cataract whose <br> bed is in part formed by the curved surface of the strata The <br> quartzite is overthrown about 20° the strata dipping into the hill at <br> 70° Again in a small tributary of the burn close to the junction of <br> quartzite and dolomite is a fragment of a bed of dolomite 18 inches <br> thick evidently not far from its matrix This block is bent in the <br> middle into a small overthrown fold as clearly as could be repre- <br> sented in a diagram Now the large overthrow in the quartzite higher <br> up proves the operation of an enormous lateral force ; and the contorted <br> dolomite shows that the same pressure was at work at the junction <br> Taking these facts in conjunction with the graduated faults before <br> described there appears no improbability in the suggestion that the 36928975 113681 51125 Page 368 Text 39 http //www biodiversitylibrary org/page/36928975 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 36928975 dc identifier http //biodiversitylibrary org/page/36928975 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 N02/13204756695 2015-08-26 12 52 03 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 | ||||
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