215 



Miles and 

 Kilometres. 



107- m. Illecillewaet Gorge (Albert canyon) — Alt. 



172-2 km. ca. 2,450 ft. (747 m.). In the gorge an excellent 

 view of the lower beds of the Laurie group is 

 obtained. A thickness of about 200 metres 

 is represented in continuous outcrop. A few 

 thin lenses of blackish limestone and the basal 

 15-metre bed of light gray limestone (seen 

 at the west end of the rock cut) are intercalated 

 in the dominant metargillite. In the railway 

 cut may be noted the only intrusive rocks 

 known in our section between Glacier and 

 Albert Canyon station. One of these is a 

 narrow N-S. trending, nearly vertical dyke 

 of minette, with small, completely altered, 

 phenocrysts of augite. The other is a i-metre 

 sill of common, highly vesicular (!) basalt, 

 which locally breaks across the bedding of the 

 metargillite. 



On the way to Albert Canyon station, a few 

 rock-cuts in the Illecillewaet quartzite and 

 Moose metargillite are passed. On the right 

 the north branch of the Illecillewaet joins the 

 main river. 



109-4 m - Albert Canyon station — Alt. 2,221 ft. 



176-0 km. (677 m.). A prolonged stop is made at this 

 point for the double purpose of viewing the 

 basal unconformity between the Selkirk series 

 and the Shuswap terrane; and of becoming 

 acquainted with an igneous phase of the latter 

 series of rocks. 



About 800 metres from the station, on the 

 northwest bank of Albert (Moose) creek, the 

 zone of unconformity has been laid bare for in- 

 spection. The high precipices visible on the east 

 and north are composed of the dark-coloured 

 strata of the Moose metargillite, Illecillewaet 

 quartzite, and Laurie metargillite, dipping to the 

 northeast. The Moose formation is largely 

 hidden beneath the thick forest on the ridge due 

 south but preserves its monoclinal attitude to the 

 underlying limestone. This fine-grained marble 

 is seen at the crossing of Albert creek, where 

 35069— 8a 



