Couture crater
Encyclopedia
Lac Couture is a lake in Northern Quebec
Quebec
Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

, Canada. It is located in Baie d'Hudson in the Kativik
Kativik, Quebec
Kativik is a territory equivalent to a regional county municipality of Quebec, with geographical code is 992. Its land area is 443,372.3 km² , and its population was 10,815 as of the 2006 Census of Canada....

 territory.

Most of the lake covers an 8 km in diameter impact crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

. The crater is estimated to be 430 ± 25 million years old (Silurian
Silurian
The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 Mya , to the beginning of the Devonian Period, about 416.0 ± 2.8 Mya . As with other geologic periods, the rock beds that define the period's start and end are well identified, but the...

).

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