63 



crystalline schists, quartzites, crystalline limestones and 

 dolomites with intercalated sills of quartz porphyry, 

 granite, diorite, etc., which are also more or less foliated. 

 According to Dawson and Daly the present condition 

 of the rock series has been effected by static regional 

 metamorphism, the stress directing the crystallization 

 being induced by deep burial and dead weight. 



In the vicinity of Proctor on the north side of the 

 west arm the strike of the series is approximately parallel 

 to the shore of Kootenay lake, the prevailing dip being 

 to the west. The west shore of Kootenay lake is the 

 only point in the area where the Shuswap rocks are in 

 direct contact with the immediately succeeding series. 



CAMBRIAN (?). 



Selkirk series — The formations grouped under the 

 Selkirk series, which has been tentatively referred to the 

 Cambrian, have not been studied in sufiQcient detail 

 to admit of the series being definitely placed in the geolo- 

 gical scale. It is probable, however, that part of the series 

 is Pre-Cambrian. The rocks consist of mica- chlorite- 

 and other schists, bedded quartzites, dolomites and 

 conglomerates, and schistose rocks of distinctly igneous 

 origin. Stocks and masses of diorite, and serpentine, 

 dykes and sheets of acid and basic intrusives and various 

 types of pyroclastic rocks are also included. The structure 

 is distinct in the areas where sedimentaries predominate 

 but much obscured where the rocks are more massive 

 and of igneous origin. 



In this area the series overlies the Shuswap and forms 

 a narrow band paralleling the latter along the west shore 

 of Kootenay lake. 



CARBONIFEROUS (?) 



Slocan series — The Slocan series is tentatively 

 referred to the Carboniferous. It consists of a thick 

 series of argillaceous quartzite, sandstones, argillites 

 more or less carbonaceous, and argillaceous limestones. 

 The rocks are folded and probably much faulted. This 

 can only be inferred from the frequent crush zones as 

 the rocks usually are too uniform in composition to show 

 pronounced contrasts on each side of a fault plane. Along 



