Tectonic significance of late Paleozoic deformation in the Cape George Peninsula, Antigonish Highlands, Nova Scotia

Abstract

Late Paleozoic deformation of the Cape George Peninsula, provides information on post-accretionary fault movements associated with waning stages of Appalachian orogenic activity. Anomalously intense brittle to ductile deformation of the low-grade Late Paleozoic rocks of the peninsula occurred along east-west shear zones in a ca. 4 km-wide belt bounded by the NE-trending Hollow and Greendale faults. Development of the regional stress regime required by fault kinematics is consistent with coeval post-accretionary dextral motion between the Meguma and Avalon composite terranes along the east-west Cobequid-Chedabucto fault system. -from Authors