RESUME OF LITERATURE. 87 



or the other. The bedding of the newer system is nearly horizontal — inclining five 

 to fifteen degrees southward in the regions here reported on [p. 330]. 



Summing up, we get the following succession (pp. 330-364): 



1. At the base are the granitoid and gneissoid rocks in three areas — the 

 Basswood, "White Iron, and Saganaga lakes. The White Iron granite area 

 is made to include the area on and near Snowbank Lake that is underlain 

 by granite. These granitic masses have everywhere a bedded structure, 

 more or less distinct. They are traversed by quartzose and granulitic 

 veins, as well as by dikes of diabase. 



2. The gneisses and granites are flanked by vei'tical crystalline schists of 

 the Vermilion grouj). The transition from the gneisses to the crystalline 

 schists is never abrupt, but is a structural gradation, near the line of 

 junction the beds of gneisses and schists occurring in many alternations. 



3. Above the Vermilion group are the Keivatin semicrystalline schists, 

 the two series being every wliere conformable; but there is a somewhat 

 abrupt change from one group to the other, and this indicates the possibility 

 of an original unconformity. If such an unconformity existed, as is 

 thought improbable, it has been destroyed by laterial pressvu-e. There has 

 been no actual connection traced between the Kewatiu schists north of 

 Gunflint Lake and those of Knife Lake. The Kewatin schists are almost 

 everywhere vertically bedded. When the bedding is obscure this is some- 

 times due to the action of erupted masses, but more often the metamor- 

 phosed condition of the strata is not ascribable to any visible cause. The 

 Kewatin schists include graywacke, argillite, sericite-schist, chlorite-schist, 

 porphyrellite-schist, and hematite. The Ogishke conglomerate is placed 

 as part of the Kewatin system, as it is traced by actual gradations into 

 the adjoining argillites. These argillites and associated schists are in 

 continuity with tlie argillites and schists of Vermilion Lake, while in the 

 conglomerate itself are local developments of sericite-schist. The bedding 

 of the conglomerate is nearly vertical; its pebbles are metamorphosed; 

 they include numerous varieties, among which are syenite resembling the 

 Saganaga syenite, greenstone, porphyry, red jasper, flint, quartz, petrosilex, 

 ordinary syenite, diorite (coarse and fine), porphyroid, siliceous schist, and 

 carbonaceous siliceous argillite. On structural as well as lithologic 

 grounds the Ogishke conglomerate seems to be part of the Kewatin, 

 although there are some reasons for suspecting it to belong to the Animikie. 



