H9 

 TABLE OF CORDILLERAN FORMATIONS— Continued. 







Thickness. 



System. 



Formation. 











Feet. 



Metres. 



Lower Cretaceous 



Jackass Mountain group 







(Comanchcan) .... 



and Queen Charlotte 

 Islands group (sand- 

 stones, shales, con- 

 glomerates) of the 









Upper Ribboned sand- 









stone 



55o 



168 





Kootenay Coal Measures 









1 Rocky Mts 



2,800 



853 





Lower Ribboned Sand- 









stone 



1 ,000 



305 





Spence's Bridge Volcanic 









group 







Jurassic 



Fernie shale of Rocky 









Mts 



1,500 



457 





Upper part of Nicola 









group (Interior) 







Triassic 



Lower part of Nicola 

 group (basic volcanics 









with limestone 



IO,000=f 



3,048=f 





Boston Bar group of 









Coast range (Triassic?) 







Uncon^or 



mity with Penny slvanian. 







Permian 



Upper Banff shale 



1 ,400 



427 





Pennsylvanian 



Rocky Mountain quart- 



1 







zite (thickness, 244m.) 







Upper Banff limestone 



f Rocky M 



ts. 





(thickness, 701 m.).. . . 







Cache Creek group of the 









Western Belt (quart- 









zite, limestone, basic 









volcanics) 



9,500 



2,896 



35069— 2A 



