BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 12, pp. 57-92 February 25, i90i 



GEOLOGICAL RECORD OF THE ROCKY MOUNTAIN REGION 



IN CANADA 



ADDRESS HY THP: PRESIDENT, GEORGE M. DAWSON 



(Read before the Society December 29, 1900) 



CONTENTS 



Page 



Introduction 57 



Special features of the region 58 



Investigators 59 



Physiographical features 59 



Table of geological formations 62 



Archean 62 



Cambrian 64 



Ordovician and Silurian 68 



Devonian 68 



Carboniferous 69 



Triassic 72 



Cretaceous 74 



Tertiary 79 



Physical history of the region 81 



Introduction 



It is the privilege of the President of this Society, in his address, to 

 bring to the notice of his fellow-members some subject possessed of more 

 or less general interest, and preferably, I think, some subject that he has 

 made particularly his own. . On such an occasion a wider outlook upon 

 various geological fields becomes admissible than in the case of papers 

 presented to the Society, which, as a rule, should be devoted to original 

 and unpublished observations. It has thus appeared to me that it may 

 be of interest and utility at this time, to collect and review the main facts 

 so far ascertained respecting the composition of the geological column of 

 what may be called the Rocky Mountain region of Canada, including 

 the province of British Columbia and the Yukon district — this region 



X— Bull. Geol. Soc. Am.. Vol. 12, 1900 (57) 



