THE GEOLOGICAL STRUCTURE OF THE CANONRIE COALFIELD. 877 



1903. Goodchild, J. G., "The Lower Carboniferous Rocks of North Britain," Trans. Glasg. Geol. Soc, 



vol. xii. p. 17. 

 1903. Goodchild, J. G., "The Geological History of Lower Tweedside," Proc. Geologists' Assoc, vol. xviii. p. 



105. 

 1903. Kidston, R., "The Fossil Plants of the Carboniferous Rocks of Canonbie and of parts of Cumberland 



and Northumberland," Trans. Roy. Soc. Edin., vol. xl. pp. 741-833. 



DESCRIPTION OF PLATES. 

 Plate I. 



Geological map of the Canonbie District on the scale of two inches to a mile, showing the areas 

 occupied by the Lower, Middle and Upper Coal-measures. 



Plate II. 



Table of vertical sections prepared from journals of bores sunk in the Canonbie district. 

 Abbreviations: — Upper C. M = Upper Coal-measures ; M. CM. = Middle Coal-measures; L.C.M. = Lower 

 Coal-measures; M.G. = Millstone Grit; C.L. = Carboniferous Limestone. 



Plate III. 



Series of horizontal sections to illustrate the geological structure of the Border region between Liddis- 

 dale and Annandale. 



Explanation of Geological Signs : — b 5 = Upper Silurian ; c 3 = Upper Old Red Sandstone ; d' = Volcanic 

 Zone of Tarras Water and Birrenswark ; d" = Whita Sandstone ; d iij = Cemenstone Group ; d iv = Fell Sand- 

 stones ; d v = Glencartholm Volcanic Group ; d" = Lawston Coals ; d" 1 = Marine Limestones ; d"" = Kiln- 

 holm Coals ; d ,x = Upper Limestones ; d x = Millstone Grit ; d xi = Rowanburn Coals ; d xii = Byre Burn 

 Coals; d xiil = Red Sandstones of Canonbie (Upper Coal-measures); /= Trias. 



Plate IV. 



Comparative series of vertical sections of the Carboniferous system in (1) Eskdale and Liddisdale ; (2)- 

 Berwick and Northumberland ; (3) Fife ; (4) Midlothian. 



