Map of water bodies in northeastern Canada, including Baffin Bay and the Labrador Sea, which occupy basins created by the Canadian Arctic Rift System.
Coordinates: 65°N58°W / 65°N 58°W / 65; -58
Location
Canada/Greenland
Age
Paleozoic-to-Cenozoic
Dimensions
• Length
4,800 km (3,000 mi)
The Canadian Arctic Rift System is a major North American geological structure extending from the Labrador Sea in the southeast through Davis Strait, Baffin Bay and the Arctic Archipelago in the northwest. It consists of a series of interconnected rifts that formed during the Paleozoic, Mesozoic and Cenozoic eras. Extensional stresses along the entire length of the rift system have resulted in a variety of tectonic features, including grabens, half-grabens, basins and faults.
Development of the Canadian Arctic Rift System was accompanied by two plate tectonic episodes that originated on opposite sides of the North American Plate and were propagated toward each other. Both were strongly controlled by pre-existing structures, which either guided the propagating faults or impeded their growth. The rift system is now inactive apart from minor adjustments that are indicated by occasional earthquakes in Baffin Bay and the Labrador Sea.
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