Nain Province

[2]: 847  When North America and Europe rejoined, the North Atlantic Craton was triangular shaped with each side 600 km (370 mi); this unit was separated when the Labrador Sea formed 61 to 40 million years ago.

The crust of the North Atlantic Craton varies between 28 and 38 km (17 and 24 mi) thick[3]: 673  and its rocks are 85% granitoid gneisses.

[1] The gneisses of the Nain Province were last deformed and metamorphosed[4]: 1245  when two blocks docked together 2500 million years ago[5] with a collisional boundary extending 200 km (120 mi) to the north and 150 km (93 mi) to the south of Nain, Labrador, Canada.

[6] These two blocks appear to represent two distinct Archean cratonic nuclei, each with its own mineral depositional history.

[1] The Torngat orogen developed during the oblique convergence of the Superior and Nain Provinces[7]: 23, 403  900 million years ago.

Map showing cities and geographic features of Labrador, Canada.
Note Saglek Bay, Nain and Hopedale
This is a map of the Hunt River and Florence Lake greenstone belts in Labrador, Canada.
Hunt River and Florence Lake greenstone belts