 Continual eastward movement of the Slave province, along with collision of the Hottah terrane on the western margin of the Slave, lead to intense deformation of the Taltson magmatic zone.The Hottah terrane accreted with the Slave during the Wopmay orogeny at 1.88 Ga, shortly after the Thelon orogeny.This event produced another continental magmatic arc on the Slave's western margin, the Great Bear magmatic zone, as well as the Wopmay fault zone.