SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 75, NO. 5, PL. 31 



Fig. I. — Looking up Ranger Brook Canyon to the amphitheater in the heart of the Sawback 

 Range. The Carboniferous limestones in the foreground overlie the Pipestone and Messines 

 formations that form the light colored cliff on the right side of the canyon. The Mens forrnation 

 forms the eastern slope of the ridge east of these cliffs, beneath a thin band of Sarbach siliceous 

 limestones. The cliffs in the distance include the Bosworth, Arctomys, and Eldon formations, which 

 are thrust at a high angle over the dark Devonian beds forming the crest of the ridge above Forty- 

 mile Creek Canyon. 



Locality. — At H on map, plate 26. Sawback Range, 9 to 10 miles (14.5 to 16. i km.) west-north- 

 west of Banff, Alberta. 



Fig. 2. — Southwesterly inclined Ozarkian and Cambrian beds in the Sawback Range, pass- 

 ing beneath the overthrust Lower Cambrian quartzites of Castle Mountain, in the canyon of 

 Johnston Creek. 



Locality. — About 6 miles (9.7 km.) southeast of F on map, plate 26, at the head of 

 Johnston Creek, 12 miles (19.3 km.) southeast in an air line from Lake Louise Station, 

 Alberta. 



