PAGE. 



Granite 28 



Lower Huronian and Keewatin 29 



Itinerary 29 



Bibliography 30 



Annotated guide (continued) 30 



Pre-Cambrian geology of Port Arthur district. . 31 



History of exploration 31 



Geology of the district 31 



Pleistocene 32 



Keweenawan 32 



Animikie 33 



Itinerary 35 



Bibliography 36 



Port Arthur to Winnipeg, via Canadian 

 Northern Railway. 



by W. L. Uglow 37 



Introduction 37 



Annotated guide, Port Arthur to Iron Spur. ... 39 



Geology of the vicinity of Iron Spur 41 



General statement 41 



Keewatin 42 



Seine series 42 



Algoman 42 



Particular description of points to be visited . 43 



Orebody at the Atikokan iron mine 43 



Irruptive contact of the Algoman granite 



with the Seine series 45 



Annotated guide, Iron Spur to Atikokan 45 



Geology of the vicinity of Steeprock lake 46 



General description 46 



Keewatin 47 



Laurentian 47 



Steeprock series 47 



Seine series 47 



Structure of the area 48 



Progress of exploration 48 



Particular descriptions of points to be visited. 49 

 Cross section of the Keewatin and Steep- 

 rock series on the south shore of Falls bay. 49 

 Fossiliferous limestone at Point No. 1 . . . . 50 

 Fossiliferous limestone and unconformable 

 contact of the Steeprock series with the 

 Laurentian at Point No. 2 51 



