5i 



Miles and 

 Kilometres 



gated, finger-like peninsulas at the junctions 

 of Chilkat, Chilkoot, and Taiya inlets are 

 typical glacial junction spurs which have 

 resulted from the action of the large valley 

 glaciers confluent at acute angles. The glaciers 

 overrode the junction spurs and cut them to the 

 present elongated shapes, rounded in transverse 

 cross section and almost cigar shaped in plan. 

 460 m. Skagway. — At Skagway several different 



740 km. types of the granitic and dioritic rocks occur; 

 the Skagway aplitic and pegmatitic rocks are 

 specially interesting. 



THE SKAGWAY — WHITEHORSE — DAWSON 

 SECTION. 



BY 



D. D. Cairnes. 

 GENERAL TOPOGRAPHY AND GEOLOGY. 



In going northward from Skagway over the White 

 Pass and Yukon railway, the traveller commences at once 

 to cross the Coast range and reaches its northern or north- 

 eastern border in a distance of about 45 miles (72 km). 

 Thence, continuing over the railway to Whitehorse and 

 down Lewes and Yukon rivers to Dawson, 571 miles 

 (914 km.) from Skagway, the journey is within the south- 

 western and central portions of the Yukon plateau, Yukon 

 river occupying a median position in this physiographic 

 province. The main physiographic systems of Yukon 

 Territory, as well as those of British Columbia to the 

 southeast and of Alaska to the west and northwest, trend 

 in a general way parallel to the Pacific Coast line, following 

 its peculiar curved contour. 

 34883—4! 



