40 Ar/ 39 Ar Dating of Paleoproterozoic Shear Zones in the Ellesmere-Devon Crystalline Terrane, Nunavut, Canadian Arctic

Paleoproterozoic gneisses of the Ellesmere–Devon crystalline terrane on southeast Ellesmere Island are deformed by m-scale, E-striking mylonite zones. The shear zones commonly offset pegmatitic dik...