[schofield] rocky MOUNTAIN TRENCH 71 



Section^ Near North Kootenay Pass, Between Crowsnest Branch of 



C.P.R. and International Boundary Line 

 Devonian Jefferson limestone 500+feet 



disconformity 

 Middle Cambrian 425 feet Cambrian 425 feet thickness. 



disconformity 

 Pre-Cambrian Lewis series 



Section^ on the Eastern Wall of the Rocky Mountain Trench at Elko, 

 Crowsnest Branch, C.P.R. 



Devonian Jefferson limestone 300 feet 



disconformity 

 Middle Cambrian . . . .Elko formation. . . 90 feet Vambrian 170 feet thickness 

 Burton formation 80 feet J 



disconformity 

 Pre-Cambrian Galton series 



Section on the Eastern Wall of the Rocky Mountain Trench, at Upper 

 Columbia Lake 



Devonian Jefferson limestone 500 feet 



disconformity 



Upper Cambrian Sabine formation . 725 feet \ Cambrian 2,525 feet thickness 



Middle Cambrian Elko formation. . . 1,800 " J 



Base unexposed 



Section^ on Main Line C.P.R. Near Field, B.C. . 



Silurian Halysites beds 1,850 + feet 



Ordovician Graptolite shale 1,700 + " 



Goodsir shales 6,040 + " 



Upper Cambrian Ottertail limestone 1,725 + 



Chancellor 4,500 + 



Sherbrooke 1,375 



Paget 360 + 



Bosworth 1,855 + 



Middle Cambrian Eldon 2,728 



Stephen 640 



Cathedral 1,595 



Lower Cambrian Mt. Whyte 390 



St. Piran 2,705 



Lake Louise 105 



Fairview 600 + 



Conformable in some places. 

 Pre-Cambrian Hector 4,590 



* Adams, F. D., and Dick, W. J. — Report Commission of Conservation 1915, pp. 

 8-13.) 



* Schofield, S. J., Geol. Surv., Can., Mem. 76, 1915, p. 42. 

 3 Allan, J. A., Geol. Surv., Can., Mem. 55, 1914, p. 60. 



Cambrian 



18,578 + feet 



thickness 



