418 



ME. J. DURHAM ON THE VOLCANIC ROCKS 



35. YoLCANic Rocks of the JN'orth-east of Fife. By James Dur- 

 ham, Esq., E.G.S. With an Appendix, by Prof. J. "W. Judd, 

 F.E.S., Pres. G.S. (Eead June 9, 1886.) 



[Plate XIII.] 



Those who are acquainted with the more salient features of the 

 geology of the great central valley of Scotland are aware that the 

 broad band of Old Red Sandstone which extends from the base of 

 the Grampians about twenty-five miles to the south-east is intersected 

 by belts of volcanic rocks in lines, running from north-east to south- 

 west, nearly coinciding with the strike of the beds. Of these 

 volcanic belts by far the most extensive is that which forms the 



Pig. 1. — Sketch Map of the Country round Newport^ Fife. 



BaiicLee lauu" 



Tay 'Bridge 



\f\l (\< ^\i\^\-/^f <\^/\/^\A ^i V ^M \^i 



^OTTTVlfc 



B 



R\7/x 7\ 7v/-> n\ \/ \/\ / v\ / \ ^\{_\ y^^xL^ 



'•y&r>= 



^■-v-V /^W.'W/ V /^\W f 



''~\ /W^^yy\l\ l\ /\ /\^v^\/\iv I \^\ 



For explanation of symbols, see fig. 2, p. 421. 

 A-B. Line of section, fig. 2. 

 a, b. Quarries in andesite rock. 

 * Dacite -glass in breccia. 



southern boundary of the Lower Old Eed Sandstone in this part of 

 Scotland, and crosses the country almost uninterruptedly from sea 

 to sea. It comprises some important ranges of hills, of which the 

 Ochil range is the most conspicuous. 



