40 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 75 



This fauna is essentially the same as that at the northern foot of Mt. 

 Stephen on the Canadian Pacific Railway and near Cranbrook where 

 Col. C. H. Pollen has collected such fine specimens. 



SUMM-ARY 



Devonian : Feet Meters 



Limestones (only a portion) 400 + 121.9 -j- 



Silurian : 



2"sco ,. ^ , o , 



,, r . imestones 1,600+ 487.7 + 



licaverfoot ' 



Wonah Quartzite 110+ 33.5 + 



Ordovician : 



Shales /Glenogle 1,700 + 518.2 + 



ISinclair 1,655 + 5044 + 



Limestones (Sarbach ?) 400+ 121.9 + 



Ozarkian : 



Mons limestones and shales 3,826 + 1,166.2 + 



Upper Cambrian ? : 



Limestones 860+ 262.1 + 



Total thickness as measured and estimated 10,551+ 3,215.9 + 



NOTE ON THE EXTENSION OF PRE-DEVONIAN FORMATIONS 



OF THE BEAVERFOOT-BRISCO-STANFORD RANGE 



NORTH OF KICKING HORSE CANYON 



Silurian. — The most recent pre-Devonian formations met with are 

 the Beaverfoot and Brisco limestones of the Silurian, which as far as 

 known to me are not present in the sections at Glacier Lake, the Van 

 Home or Sawback Ranges. The " Silurian," as mapped by Dr. J. A. 

 Allan, extends some distance north of Kicking Horse Canyon ^ but 

 how far has not been determined. 



Ordovician. — The Ordovician Glenogle graptolite shales extend a 

 short distance north across the Kicking Horse Canyou along with the 

 Silurian, but a part of the Sarbach Ordovician limestone and included 

 fauna occur in the Sinclair Canyon section where the shales of the Sin- 

 clair formation carry graptolites that may be compared with those 

 found in the Sarbach limestones on the eastern side of the Continental 

 Divide at Fossil Mountain and Glacier Lake ; also the fauna of the 

 lower portion of the Sarbach at Clearwater Canyon section may be 

 compared with that of the lower Sinclair in Sinclair Canyon. The 

 Sarbach and Sinclair formations are lithologically dissimilar and 

 unlike in character, which prevents my using the name Sarbach for the 

 strata of about the same geological age in the Brisco and Stanford 

 mountains. 



^ Guide Book No. 8, pt. II, Transcontinental Excursion C. I. Geol. Surv. 

 Can., 1913, Route map between Banff and Golden, p. 189. 



