Transpressive tectonism in the eastern Penokean orogen, Canada Consequences for Proterozoic crustal kinematics and continental fragmentation

Results of a structural analysis of Archean basement, Huronian cover and various igneous rocks in the Sudbury area, Ontario, and regional tectonometamorphic correlations suggest that structures in the eastern Penokean orogen formed dominantly by dextral transpression. Bulk horizontal shortening started with the ca. 2.4 to 2.2Ga Blezardian orogeny and was accompanied by peak metamorphism and local granitoid magmatism. During the 1.89 to 1.83Ga …