It is a belt of multi-deformed metasedimentary and metavolcanic rocks intruded by a series of diorite to granite plutons.
[1] Forming the western part of the Wopmay orogenic system, the 1.9 Ga (billion years ago) Hottah terrane is separated from the Archean rocks of the orogen by the north-trending Wopmay fault zone and overprinted by the 1.875-1.85 Ga Great Bear magmatism.
1.88 Ga after which the westward subduction of an ancient ocean in front of the Slave Craton ceased and the Great Bear Magmatic Zone formed.
In their model, the Hottah terrane was detached from the Slave Craton south of its present location (in modern coordinates) and made a northward voyage along an active margin similar to that of Baja California Peninsula and its chain of volcanoes.
1.85 Ga. During this period the terrane was transported laterally along the subduction system before colliding with the Slave Craton ca.