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| Keywords: The Quarterly journal of the Geological Society of London (13860055233).jpg 592 <br> PROF C LAPWORTH ON THE GIRT AN SUCCESSION <br> Fig 15 Section at Laggan Gill <br> E S E W N VV <br> Ba 2 Basal zone of Graptolitic flagstones soft shales with Lasio- <br> graptus Cryplograptus Trachyderma c <br> Ad 2 Balclatchie grits and flagstones <br> ˘ Ad 1 Balclatchie mudstones much broken <br> Ac Benan Conglomerate <br> Ballantrae Rocks <br> Sy Syenitic rock <br> L Calcareous rock shattered and altered <br> Altered breccias <br> difficulty This is nevertheless by no means the case with the <br> peculiar transitional zone at the summit of the group which occurs <br> here in its normal position at the base of the Graptolitic flagstone <br> series Its strata although greatly folded are crowded with the <br> characteristic Graptolites and Brachiopoda in a state of exquisite <br> pres rvation <br> The commonest forms are Cryptograptus triconns Carr Lasio- <br> graptus Harhnessi Nich Climacograptus bicornis Hall 0 Scharen- <br> bergi Lapw Diplograptus rugosus Emm 1 foliaceus Murch <br> together with species of Trachyderma Cy there c c <br> This Balclatchie hand is prolonged to the south-eastward of <br> Laggan Gill along the northern margin of the conglomeratic area <br> of Dinvin and Dalfask into the neighbourhood of liarbae and Tra- <br> mitchell where it has been noticed already <br> 0 Dow Hill Upon the inlier of Dow Hill see map PI XXV <br> the Balclatchie mudstones which there repose in their natural place <br> upon the Benan Conglomerate have yielded to the persevering re- <br> searches of Mr Robert Gray a large suite of fossils identical with <br> those of the typical locality and of Ardmillan Braes The same <br> Balclatchie zone is met with in a corresponding position at several <br> spots on both margins of the Pinmore synclinal while the overlying <br> transitional seam Ba n occurs at various localities within the same <br> area and is abundantly fossiliferous It is needless to enter into <br> further details of these exposures <br> Summary The strata which next fall to be described are the <br> Graptolitic Flagstones and Shales of Ardwell and Penwhapple <br> These however are so distinct in their lithological and paheonto- <br> logical features from the rocks already noticed that it is impossible <br> to place them in the same systematic group We are therefore 36936421 113692 51125 Page 592 Text 38 http //www biodiversitylibrary org/page/36936421 1882 Geological Society of London NameFound Brachiopoda NameConfirmed Brachiopoda EOLID 1498 NameBankID 230460 NameFound Climacograptus bicornis NameConfirmed Climacograptus bicornis NameBankID 5675334 NameFound Cryptograptus NameConfirmed Cryptograptus NameBankID 4129597 NameFound Diplograptus rugosus NameFound Graptolites NameConfirmed Graptolites NameBankID 423327 NameFound Trachyderma NameConfirmed Trachyderma EOLID 21793 NameBankID 212759 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 38 1882 Geology Periodicals Smithsonian Libraries bhl page 36936421 dc identifier http //biodiversitylibrary org/page/36936421 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-15 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13860055233 2015-08-26 07 56 37 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1882 Photos uploaded from Flickr by FĂŚ using a script | ||||
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