CRUSTAL-SCALE AURIFEROUS SHEAR ZONES IN THE CENTRAL SUPERIOR PROVINCE, CANADA

A proposed correlation of major Archean shear zones across different m etamorphic terranes of the central Superior province implies that the same shear zones are exposed at greenschist to granulite facies. Coali gnment of the shear zones is recognized after systematic removal of re gional Proterozoic dextral transcurrent and shortening deformation ass ociated with the intracratonic Kapuskasing uplift. Subvertical in the upper crust, the structures become shallowly north dipping at deeper l evels. The connection of these Archean shear zones provides limits on any sinistral transcurrent component associated with the tectonic evol ution of the Kapuskasing uplift.