TRANSACTIONS 



OF THE 



rt Scotran Jnstitute of Science. 



SF:SSION OF 1900-1001. 



I. GEOLOGICAL NOMENCLATURE is NOVA SCOTIA. BY HUGH 

 FLETCHER, B. A., of the Geological Survey of Canada. 



(Communicated lOfi December, 1900. ) 



NEW GLASGOW CONGLOMERATE. 



Another of the debatable questions in Nova Scotian geological 

 classification is that of the age of the New Glasgow Conglomerate. 

 This formation is thus described by Sir William Logan : 

 "At the bridge of New Glasgow is exposed a series of con- 

 glomerates, which, in general colour, are between a brick-red 

 and chocolate or Indian-red, and whose inclosed masses, varying 

 from the smallest pebbles to boulders of two feet in diameter, 

 are, for the most part, unmistakabty derived from the red and 

 greenish-gray sandstones, red shales and impure nodular lime- 

 stones of the Millstone Grit, some of them containing the same 

 vegetable organic remains. With these pebbles and boulders 

 are associated a few from the rocks still lower down. The whole 

 are inclosed in a matrix of the same mineral character, constitut- 

 ing an argillo-arenaceous cement, which is also calcareous, and 

 in the interstices of the boulders and pebbles is often observed a 

 network of white calcspar aiding to keep them together. There 

 are interstratified in the rock, bands, from a few inches to several 

 feet in thickness, of fine red sandstone and red shale, which 

 serve to give assurance of the dip, and these occur at such dis- 

 tances apart as to render the conglomerate beds thick and 

 PROC. & TRANS. N. S. INST. Sci., VOL. X. TRANS. V. 



(323) 



