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| Keywords: The Quarterly journal of the Geological Society of London (12894937733).jpg 104 PROCEEDINGS OF THE GEOLOGICAL SOCIETY Dec 2 <br> The accompanying section exhibits the general geological features <br> of the Belfast Hills <br> Fig 1 ” Section from the River Lagan to Black Mountain <br> Black <br> Mountain <br> Fall' <br> Road <br> River River <br> Blackstafr Stranmillis Lagan <br> 5 <br> 1 Basalt <br> 2 Hard Chalk <br> 3 Greensand <br> 4 Lias <br> 5 Keupen <br> 6 Tertiary Sands <br> 3 Zone ofAvicula contorta ” Sections of this formation have been <br> examined in the escarpment of the Belfast Hills extending from <br> near Lisburn to Whitehead a distance of 24 miles <br> From Moira 15 miles from Belfast to Kilcorig 9 miles south-west <br> of Belfast the Avicula-contorta beds are absent the Hard Chalk <br> lying directly upon the Keuper Marl <br> In Colin Glen 5 miles south-west of Belfast the greatest deve- <br> lopment of the Liassic series occurs <br> This locality is referred to by General Portlock in his Report <br> p 107 Treating of the section at Lisnagrib the beds of which are now <br> identified with the Avicula-contorta zone he says It may be re- <br> marked that the shaly bed containing Carclium strialulum C Hhosti- <br> cum is again found 40 miles distant in Colin Glen near Belfast; but as <br> yet the calcareous grit with the teeth and scales has not been <br> there discovered It is very gratifying to me to be able to report <br> the presence of these forms Prom the following sections it will be <br> observed that a fish-bed is a marked feature of this zone throughout <br> the neighbourhood In addition to the species observed by Portlock <br> I have found two others <br> It is interesting to note the great variety of lithological characters <br> that occurs in the Colin Glen Section of the Rhsetic series <br> The section at Lisnagrib principally consists of alternating beds of dark <br> shale and calcareous grit 36089345 111261 51125 Page 104 Text v 20 http //www biodiversitylibrary org/page/36089345 1864 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 20 1864 Geology Periodicals Smithsonian Libraries bhl page 36089345 dc identifier http //biodiversitylibrary org/page/36089345 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-03 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12894937733 2015-08-26 16 58 33 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1864 Photos uploaded from Flickr by Fæ using a script | ||||
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