description Lac Couture Overview
Lac Couture is an impact structure in Quebec, Canada, whose circular depression is occupied by the lake of the same name. The structure is roughly eight kilometres across, giving it a diameter of more than five miles, and glacial processes have influenced its present appearance. Its lake-filled interior and geological setting make it a recognizable example of an eroded terrestrial impact feature in the Canadian Shield region.
help Lac Couture FAQ
Where is Lac Couture impact structure located?
Lac Couture is in Quebec, Canada. The circular depression created by the impact is occupied by the lake that shares its name.
How wide is the Lac Couture impact structure?
It is roughly eight kilometres across, or more than five miles in diameter. The present shape has also been influenced by later glacial processes.
Is Lac Couture a volcanic lake?
No. It occupies an impact structure formed by a meteorite collision with Earth. Glaciation later modified the depression and its surrounding landscape.
Why does the Lac Couture crater not look like a simple bowl?
The original impact shape has been altered by erosion and glacial activity in Quebec. The lake and surrounding terrain therefore reflect both the impact and much later landscape processes.
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