396 



DEPARTMENT OF THE INTERIOR 



2 GEORGE V, A. 1912 



less abundantly represented among the pebbles. Most of them were manifestly 

 derived from the Anarchist series and have probably not been carried far by 

 the moving water. The cement is sandy and often somewhat calcareous. On 

 the hill south of the Riverside hotel the conglomerate is notably uniform, with 

 only a very few, small lenses of sandstone. In the canyon sections, beds of 

 both grit and sandstone, reaching three or four feet in thickness, interrupt the 

 coarser sediment. These finer-grained beds are characterized by sliver-like, 

 subangular fragments of black argillite, from one-half to one inch in length. 

 Such fragments are identical in appearance with smaller ones occurring in the 

 thick sandstone member and serve as a kind of fossil in suggesting that sand- 

 stone and conglomerate belong to one conformable series of beds. 



N.W. 



S.E. 



I500feet above Sea Level 



Feet 



Figure 25. — Section northeast of bridge over Kettle River, six miles above Midway. 



Legend*: — Dot-and-line, Kettle River sandstone. Blank, pulaskite porphyry sills. Solid 

 black, rhomb porphyry. 



At southeast end a composite sill of pulaskite porphyry and rhomb-porphyry ; at north- 

 west end data lacking, owing to land-slide. 



Strata which seem to represent the base of the sandstone member are 

 seen to overlie conformably the conglomerate in the canyon section. About 100 

 feet of these beds are there exposed and in all respects are like the sandstones 

 exposed in the much thicker sections along the Kettle river and on Myer's creek. 

 In all cases the sandstones carry plant-stems and the thin interbeds of shale 

 are carbonaceous. 



The best sections in the uppermost member include one on the Kettle 

 river wagon-road at its abrupt turn four miles west of Midway, and a second, 

 occurring just above the river alluvium two miles to the northward. The 

 former locality was long ago noted by Bauerman.§ It is illustrated in Figure 

 25. 



The sandstone is generally of medium to fine grain and of colour ranging 

 from whitish, through the dominant light gray, to light brown. Even to the 

 naked eye it normally appears highly feldspathic. A thin section of a typical 

 specimen was found to consist of angular to subangular fragments of quartz, 



§H. Baaerman, Report of Progress, Geol. Surv., Canada, for 1882-3-4, part B. p. 82. 



