NO. I FORMATIONS OF BEAVERFOOT-BRISCO-STANFORD RANGE 3 1 



except such forms as Ptychoparia and Agraulos. If the typical Burton is of 

 iMiddle Cambrian age, then this formation is not to be correlated with the 

 Burton but with the Mount Whyte formation. 



The section of the Burton near Elko, B. C, as published in 1914, indicated 

 that 5 of the section is to be compared with Ptarmigan formation (Middle 

 Cambrian) and 4, 3, 2 with the Mount Whyte formation (Lower Cambrian) 

 of the section at Kicking Horse Pass, east of Field, B. C. 



'Sirs. Walcott and I collected a number of species that are listed in the sec- 

 tion {ante, p. 30), but we were unable to find any fossils in the great limestone 

 tentatively referred to the Elko. This limestone occupies the stratigraphic 

 position of the Middle Cambrian Cathedral limestone of the Mt. Stephen 

 section 92 miles (148 km.) to the north, and may possibly be a southern con- 

 tinuation of it. A study of the area eastward of Grainger Mountain to and 

 including the formations at the head of Palliser River will probably be neces- 

 sary before a satisfactory correlation can be made. 



NOTES ON GEOLOGICAL FORMATIONS OF THE WESTERN SIDE 

 OF THE BEAVERFOOT-BRISCO-STANFORD RANGE 



This mountain range has had three names given to it as follows : 

 Beaverfoot lor the northern section between Kicking Horse Canyon 

 east of Golden and Harrogate Canyon 33 miles (53 km.) to the 

 sotith ; Brisco for the middle section from Harrogate to Sinclair 

 Canyon 31 miles (49.9 km.), and Stanford for the southern section 

 between Sinclair Canyon and the end of the range where the Koote- 

 nay Valley enters the ''Rocky Motintain Trench" 36 miles (57.9 

 km.), thus burdening geographic nomenclature with two unnecessary 

 names for a continuous range topographically and strticturally having 

 a length of 100 miles (1(30.9 km.). It is delimited on the east by 

 the deep Beaverfoot-Kootenay River trench, and on the west by the 

 great " Rocky Mountain Trench " in which the Columbia River 

 rises and flows to the north. These remarks serve to explain why I 

 use the composite name for the range and the letters B. B. S. for it 

 in these notes. 



DEVONIAN 



The most recent geological formation known to occur in the B. B. S. 

 Range is the Devonian limestone corresponding in position to the 

 Pipestone formation of the Clearwater Canyon area (p. 51), 20.5 

 miles (32.9 km.) north of Lake Louise Station on the Canadian 

 Pacific Railway. The Devonian limestones of Harrogate Canyon 

 were examined by Dr. Edwin Kirk who estimated that there was 

 about 500 feet (152.4 m.) in thickness exposed between two faults. 

 3 



