9i 



Bituminous coal of good quality has recently 

 been discovered about 5 miles (8 km.) above 

 Selkirk in the bank on the left limit of the Lewes 

 river in rocks apparently of Jura-Cretaceous 

 age, underlying the basalt flows. As no de- 

 velopment work has yet been performed, the 

 number and thickness of the coal seams have 

 not yet been determined. 



393 m. Selkirk — Altitude 1,555 feet (472 m.) Sel- 



628 km. kirk is the site of an old fort, and is now a 



trading post and Indian village. It is situated 



on the left limit of Yukon river just below the 



confluence of Lewes and Pelly rivers. 



Yukon river from Selkirk to Dawson is 

 liberally strewn with islands, and to White 

 river has a current of about 5 miles (8 km.) 

 per hour. The valley throughout this distance 

 is from 800 to 1,000 feet (240 to 300 m.) or 

 more in depth, and has a trend slightly north 

 of west. 



For about 25 miles below Selkirk the basalt 

 plateau continues on the right limit of the 

 river, the vesicular lavas overlying older schistose 

 rocks which continue downstream to Dawson. 

 On the left limit of the river these older rocks 

 extend from Selkirk to Dawson. Except for 

 the lavas, the predominant rock between 

 Selkirk and White river consists of a hard, 

 granular, well foliated mica-gneiss. Horn- 

 blendic, micaceous, and chloritic schists are 

 also well represented. 



491 m. White River — White river is a turbid 



785 km. stream carrying sufficient sediment to change 

 the colour of the whole Yukon below the 

 confluence. White river joins the Yukon on 

 its left limit, and 10 miles (16 km.) below 

 its mouth. 



501 m. Stewart River — Stewart river enters from 



801 km. the right. From Stewart river to Dawson the 



valley of the Yukon "is cut through an elevated 



undulating plateau, on which rest numerous 



low ranges of rounded and partly bare hills, 



