38 
COAL RESOUKCES OF THE YUKON. 
[no. 218. 
and a small amount of conglomerate. Fossil leaves, mostly of dicoty- 
ledonous plants, are distributed through it. In the upper part of the 
section coal seams are abundant and outcrop along the river bank. The 
coal is interbedded with fire clay and fine-grained sandstone. If there 
is no folding and consequent duplication of these beds, of which no 
evidence was observed, there are at least seven such coal seams dis- 
HIKWMi 
Yixkon River 
Coal beds 
|BS Rampart series W^A KenaF series 
I 1 K r •■•.-•■■•'•,• ■•••■I (coa!-beanng) 
Pleistocene 
Fig. 3. — Geologic sketch map of the vicinity of the Drew mine. 
tributed through less than 1,000 feet of sediments. Above these coal 
measures there are some heavy beds of coarse sandstone and conglom- 
erate, aggregating in thickness 200 or 300 feet. 
Although the outcroppings indicate that there are probably seven 
seams of coal at this place, only one of them has been exploited. The 
croppings of this seam in the river bank showed solid coal above the 
water line at the high stage of the river that prevailed at the time of 
