 The Slave broke off of Sclavia between 2.2 and 2.0 Ga, as noted by a host of dyke swarms at its margins.The Slave Craton drifted for approximately 200 million years before its accretion with the Rae Craton around 2.0–1.8 Ga in the Taltson–Thelon orogeny.The orogenic belt accreted smaller exotic terranes before the Slave was eventually subducted eastward under the Rae, resulting in a continental magmatic arc known as the Taltson magmatic zone.