304 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 75 



lichens. Below this shelf the hard quartzitic sandstones of the Fort 

 Mountain formation form a mural face that is present on the north 

 face of Saddle Mountain and eastward in the cliffs of Mount Temple 

 and in the Valley of the Ten Peaks, above Moraine Lake. The meas- 

 ured section on Fairview Mountain below the Lake Louise shale is as 

 follows : 



Feet Meters 



1. Massive-bedded, purplish, hard, cliff-forming, fine- 



grained, quartzitic sandstone in layers 6 inches 

 (15.2 cm.) to 3 feet (.9 m.) thick, forming a ver- 

 tical cliff in its upper 150 feet (45.7 m.). Color 

 gray in upper layers, gradually becoming purplish 

 with gray bands. Some layers are slightly cross- 

 bedded 350 106.7 



On Mount Temple the sandstone has a strong purple 

 color, and in the lower portion, bands of purple 

 arenaceous shale. 



2. Hard gray, rather coarse-grained sandstone in the upper 



200 feet (60.9 m.) with layers varying from shaly 

 beds to a foot or more in thickness. Below, the sand- 

 stone becomes coarser and passes into a fine quartz 

 conglomerate in massive layers 570 173-7 



3. Gray and greenish-gray siliceous shale. Slope covered 



with debris to the pre-Cambrian 20 -f 6.1 -f- 



Total 940 -|- 286.5 + 



On the north slope of Saddle Mountain a mile southeast of Fair- 

 view Mountain, the shale has a thickness of 28 feet (8.5 m.), and 

 below it, about 100 feet (30.5 m.) in thickness of coarse gray sand- 

 stone down to fine conglomerate is exposed. On the north slope of 

 Mount Temple, 2.5 miles (4 km.) northeast of Saddle Mountain, 

 the basal beds of fine conglomerate of the Fort Mountain rest on 

 dark, pre-Cambrian arenaceous shales. The section above is not 

 readily accessible for examination. Ten miles (16.1 km.) farther to 

 the southeast, on Little Vermilion Creek, the basal conglomerate occurs 

 in massive layers, but its contact with the pre-Cambrian is obscured 

 by debris. 



On the north side of the Bow Valley, at the south end of Redoubt 

 Mountain, 6 miles (9.7 km.) northeast of Fairview Mountain, the 

 basal conglomerate has a thicknes? of 360 feet (109.7 ^^■)' ^^^ is 

 much coarser than on Saddle Mountain or Mount Temple. It is in 

 contact with the pre-Cambrian, and above it is a band of shale 44 feet 

 (13.4 m.) thick. 



