84 THE VERMILION IRON-BEARING DISTRICT. 



the Vei'inilion district. As a result of a traverse made into Canadian ter- 

 ritory from the east end of Grunflint Lake, he comes to the couckision that 

 the Animikie, on Gunflint Lake, while not found in exact superposition on 

 the Keewatin, bears such relation as to render it probable that the two 

 formations are discordant. A short distance north of the Animikie the 

 Keewatin rocks are found with a dip of 80° south, and these, a little farther 

 to the north, grade confoi'mably into micaceous and hornblendic schists. 

 He continues as follows: 



In the report of 1881, p. 95, . . . some reasons are given for considering the 

 " quartzite-slate formation" seen at Gunflint Lake (the Animike) in horizontal posi- 

 tion, the equivalent of the great quartzite and slate formation at Ogishke Muncie 

 Lake, which passes into the Ogishke conglomerate. ... At that time the tilted schists 

 and graywackes of the Kewatin series, with their contained iron ore, were con- 

 sidered an integral part of the same tilted series as the slates and quartzites associated 

 conformabljr with the Ogishke conglomerate, and the^ iron ore of the jasper ridges 

 at Vermilion Lake were considered the equivalent of the iron ore seen in the 

 Animike. . . . But since the separation of the Animike from the Kewatin has been 

 established bj^ marked unconformities, and by constant differences in lithology 

 (including a constant difference in the kind of iron ore associated and their respective 

 mineral accompaniments), it remained still to answer the question. To which series, 

 the Animike or the Kewatin, does the quartzite-slate conglomerate of Ogishke 

 Muncie Lake belong'^ [p. 79.] 



An attempt was made to trace the Animikie westward and get its 

 relations to the rocks on Ogishke Muncie Lake. Tlie Animikie rocks 

 rest unconformably on the gneiss west of Gunflint Lake. The Pewabic 

 quartzite is a magnetited rock apparently near the top of the Animikie. 

 The gabbro is observed overlying the Animikie (Pewabic quartzite) at 

 many places. The Animikie lies unconformably on the Keewatin north 

 of Gunflint Lake (p. 87). In passing from Gunflint Lake the Animikie 

 is found to have a dip varying from 12° to 55° SSE. At Gabemichigama 

 Lake a gradation is supposed to exist from the flat-lying' Animikie into the 

 Ogishke Muncie conglomerate, with interstratified quartzite and slate beds 

 striking northwest and dipping 88° northeast (p. 91). 



Studies made around Ogishke Muncie Lake show that the Ogishke 

 conglomerate can be divided into, first, an old, eruptive-looking, massive 

 schistose and decayed conglomerate, which belongs to the Keewatin, and 

 extends from Stuntz Island, in Vermilion Lake, past Ely (where it was 



