1 86 



PLEISTOCENE AND RECENT. 



The unconsolidated material is represented by three 

 types of deposits as shown in the section. The fluviatile 

 and lacustrine deposits appear in terraces about the sides 

 of the larger valleys, while the former also floors the 

 broad flood plains of the main streams, such as the Bow, 

 the Kicking Horse, the Beaverfoot and the Yoho. 



Glacial till veneers the more gradual slopes of the 

 various ranges, to an elevation at least 9,000 feet (2,743 m -) 

 above sea-level. 



ANNOTATED GUIDE. 



(Bankhead to Golden). 



BY 



John A. Allan. 



Miles and 

 Kilometres. 



79-5 m. Bankhead — Alt. 4,510 ft. (1,375 m.). 



127-2 km. This station lies to the western edge of the 



from Cascade coal basin described by Dowling [1]. 



Calgary. About one mile east of this siding the railway 



leaves the bottom of Cascade valley and, 



turning at 90 degrees to the southwest, passes 



between Cascade mountain on the north, and 



Tunnel mountain on the south. This was at 



one time the course of Bow river, but the channel 



was obstructed by the gravels brought down 



by Forty Mile creek, as well as by the moraine 



left by the continental ice sheet, so that now 



the Bow passes through this range between 



Tunnel mounta : n and Mt. Rundle. 



The structure of the beds in Cascade moun- 

 tain is well shown in the cliff to the right of the 

 railway. The beds are steeply dipping to the 

 west and terminate in a precipitous cliff on 

 the east. The cliffs at the base are Intermediate 

 limestone (Devonian), overlain by Lower Banff 

 limestone (Lower Carboniferous). The Lower 

 Banff shale above (also Lower Carboniferous) 

 weathers into talus-covered slopes. The moun- 

 tain is capped by Upper Banff limestone and 



