BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 27, PP. 673-684 DECEMBER 9, 1916 



CRETACEOUS OF ALBERTA, CANADA 1 



BY JOSEPH II. SINCLAIR 



(Rear! before the Society December 30, 1915) 



CONTENTS 



Introduction 673 



The district studied 673 



Physiographic features 674 



General character of the strata 674 



Fernie shales 677 



Kootenay formation 677 



Blairmore formation 678 



Benton formation 670 



Belly River formation 681 



Bearpaw formation 682 



Edmonton formation 683 



Summary 684 



Introduction 



During the summer of 1914 the writer of this paper had the occasion 

 to visit the foothill district of Alberta, Canada, and by means of traverses 

 of the consequent streams which cut across the upturned strata at right 

 angles to their trend succeeded in obtaining some geological data which, 

 although incomplete, it is hoped will be of service to future investigators 

 in ibis field. 



The District studied 



The district described lies between the abrupt eastward facing escarp- 

 ment of the Lewis thrust-fault of the Rocky Mountains and the horizontal 

 strata of the Great Plains. It is called the foothill district. The portion 

 of this semi-mountainous area treated here lies southwest of the city of 

 Calgary and is a narrow strip of country about 15 miles wide and 70 



1 Manuscript received by the Secretary of the Society February 15, 1916. 



(673) 



