Regional Geology

The Property is located within the Uchi Geological Subprovince - a region of metavolcanic and lesser metasedimentary rocks, in north western Ontario and northeastern Manitoba (Figure 7-1 and Figure 7-2). The Subprovince is narrower than other subprovinces within the Superior Province and east-trending, whereas adjacent subprovinces generally trend southeast (e.g. Sachigo). The southern boundary of the Uchi Subprovince is the Sydney Lake fault system (Figure 7-2); the northern boundary is characterized by the disappearance of supracrustal rocks with the Berens River batholith being located to the north of the Uchi Subprovince (Andrews et al., 1986).

Supracrustal rocks of the Uchi Subprovince can be divided into several greenstones belts, namely the Red
Lake, Pickle Lake, Lang Lake, and Meen Dempster belts. Volcanic assemblages consist of tholeiitic
basalt and komatiitic rocks and are interpreted to have originated in an oceanic back-arc setting. Rock assemblages in the Uchi Subprovince generally become younger toward the south, reflecting episodic additions of crustal units to the margin of a growing continent