The bay's general physiography is the result of tectonic events associated with the rifting of the North Atlantic Ocean in the early Tertiary, during which time that part of the Precambrian Shield in the Frobisher Bay area was downfaulted and the blocks on either side were uplifted and tilted up to the northeast. An abrupt contact between these units is marked by the high cliffs rising from the bay, which because of the tilting are 330 m high on the north shore and twice that height on the south shore. Overdeepening occurred during the Pleistocene glaciation, when the Frobisher Bay trough was filled by a major outlet glacier from ice centered over FOXE BASIN.
The bay is named for Sir Martin FROBISHER, who discovered it in 1576. Believing that rock samples contained gold, he returned in both 1577 and 1578 with ever larger fleets to conduct mining operations that proved futile. He believed the bay was a strait, and it first appeared on maps as Frobisher Strait. The true nature of its physiography was not discovered until 1861 when the American Charles Francis HALL explored the area.
Author DOUGLAS FINLAYSON
Links to Other Sites
The Spatial and Historical Evolution of Iqaluit
Explore the history and development of Iqaluit in this interesting multimedia website from Natural Resources Canada. Check out the many cartographic visualization features and the Historical Research section, which includes an interactive tutorial about the history of the Iqaluit region. Requires Adobe Shockwave Player.