﻿1861.] 



HECTOR — ROCKY MOUNTAINS, ETC. 



427 



seem to occupy a great basin, through which the river flows from 

 above the forks of Medicine Biver. Traces of a similar deposit of much 

 more recent date than the lignite-group on which it rests, were no- 

 ticed on the Athabasca River and also on the North Saskatchewan, 

 as shown in fig. 8. 



Above that point there appear chocolate-coloured shales with beds 

 of sandstone ; and on Little Red Deer River a section (fig. 9) was ob- 



served, in which the sandstone beds become disturbed and harder, 

 presenting beautiful flexures and exposing at the base the same shales. 



