Stratigraphy of the Northern Subprovince of the Lake Superior Region
Introduction The work of the Geological Survey of Canada during the past ten years, in the region north of Lake Superior extending westerly from Timiskaming subprovince to Rainy Lake, has shown that the stratigraphic succession for this subprovince may be expressed as follows : Table of formations Basement Complex Throughout the subprovince there are extensively developed batholithic intrusives. These are the youngest rocks of the Basement complex which have been recognized. The granites which make up a part of the assemblage mapped as Batholithic intrusives are massive, except in the vicinity of local faults, and there is no evidence that they have been affected by regional pressure since they solidified. Around the granites there . . .