120 



TABLE OF CORDILLERAN FORMATIONS— Continued. 



System. 







Thickness. 





Feet. 



Metres. 



Mississippian 



Lower Banff shale 



Lower Banff limestone 

 (partly Devonian) .... 



1 ,200 

 1,500 



366 

 457 



Devonian 



Intermediate limestone. . 



Sawback limestone (Dev- 

 onian?); (thickness, 

 1,128 m.) . . 



1 ,800 



548 













Silurian 



Halysites beds 



1,850 



563 



Ordovician 



Graptolite shale 



Goodsir shale 



1 ,700 

 6,040 



518 





1,841 



Upper Cambrian. . . . 



Ottertail limeston 

 Chancellor shales 

 Sherbrooke limest 

 Paget limestones. 

 Bosworth limesto 



e 



ones. . . 



1,725 

 4,5oo 



i,375 

 360 



i,855 



526 



i,372 



419 



no 





les. . . . 



565 



Middle Cambrian. . . 



Eldon limestones. 

 Stephen limestoi 

 Cathedral limesto 





2,728 



640 



i,595 



831 





le-shale 

 nes. . . . 



196 



486 



Lower Cambrian. . . . 



Mt. Whyte sand-' 

 stone shale .... 



St. Piran quart- 

 zite 



Lake Louise shale 



Fairview sand- 

 stone 



Rocky 

 Mts. 

























