NO. 5 PRE-DEVONIAN PALEOZOIC FORMATIONS 197 



From Glacier Lake section to : 



Siffleur section (D) 25 miles ( 40.2 km.) east-northeast 



Clearwater section (E) 33 miles ( 53.1 km.) east-southeast 



Fossil Mountain-Oyster Peak sec- 

 tion (F) ^2 miles (83.7 km.) east-southeast 



Mount Bosworth section (Q) 42 miles ( 67.5 km.) southeast 



Ranger Canyon section in Sawback 



Range (H) 69 miles (iii.o km.) southeast 



Ghost River section (I) 87 miles (139.9 km.) east-southeast 



Mount Dennis section (P) 43 miles ( 69.1 km.) south-southeast 



Sinclair Canyon section 100 miles (160.9 km.) south-southeast 



Sabine Mountain section (N) 132 miles (212.4 km.) south-southeast 



Mount Robson section 125 miles (201. i km.) nortli-northwest 



Ranger Canyon section (H) to: 



Ghost River section (I) 24 miles ( 38.6 km.) east-northeast 



Mount Stephen section (P) to: 



Clearwater section (E) 26 miles ( 41.8 km.) north-northeast 



Ranger Canyon section (H) 32 miles ( 51.4 km.) east-southeast 



Ghost River section (I) 55 miles ( 88.5 km.) east 



Mount Bosworth section (Q) 7 miles ( 11.3 km.) northeast 



Mount Bosworth section (Q) to: 



Clearwater section (E) 19 miles ( 30.6 km.) north 



Glacier Lake section (B) 42 miles ( 67.6 km.) north-northwest 



Ranger Canyon section (H) 29 miles ( 46.7 km.) southeast 



Clearwater section (E) to: 



Sinclair Canyon section (N) 72 miles (115.8 km.) soutli 



Ranger Canyon section (H) to: 



Sinclair Canyon section (N) 40 miles ( 64.3 km.) south-io° west 



CORDILLERAN GEOSYNCLINE 



The extent, importance, and general contents of the Cordilleran 

 Geosyncline have been outlined in the preceding paper.^ In the follow- 

 ing pages a more detailed account is given of the sequence of events, 

 thickness and character of the formations, and their stratigraphic 

 values. 



In a paper published in 1924,* I considered that the formations 

 constituting the great section extending from Ghost River on the 

 Rocky Mountain front (I on map, pi. 26) to the pre-Cambrian on 

 the west side of Columbia River Valley (N on map) had been 

 deposited in regular sequence in a single Cordilleran trough, and the 

 accompanying diagrammatic sketch of the section showed the forma- 

 tions so arranged from the Lower Cambrian to the Silurian. This 

 view was strongly sustained by the Glacier Lake-Saskatchewan River 



^ Pre-Devonian Sedimentation in Southern Canadian Rocky Mountains. 

 Smithsonian Misc. Coll., Vol. 75, No. 4, 1927. 

 ' Smithsonian Misc. Coll., Vol. 75, No. i. 



