COOK COUNTY, 1899. U. S. GRANT. 



remarkable elongated lakes of the region. From this Animikie province the surface 

 suddenly descends to the Archean, about 500 feet. This is seen, in this county, at 

 Gunflint lake. Further east the north limit of the Animikie runs into Ontario. 

 Mount Reunion is one of the most remarkable of these monoclines. It is at the south 

 shore of Rove lake on the international boundary, (f) The Archean topography 

 appears in Lake county at the west end of Gunfliut lake, and is characterized by the 

 Giant's range (of granite) which extends from there into Lake county, although the 

 composing rock toward the west is greenstone. N. H. w. 



