Montagnais crater

Montagnais is a meteorite crater located on the continental shelf south of Nova Scotia, Canada.^[1]

Montagnais crater
Location of the crater offshore Canada
Impact crater/structure
Confidence	Confirmed
Diameter	45 km (28 mi)
Age	50.50 ± 0.76 Ma Eocene
Exposed	No
Drilled	Yes
Location
Coordinates	42°53′N 64°13′W
Country	Canada
State	Nova Scotia

It measures 45 kilometres (28 mi) in diameter, and its age is estimated to be 50.50 ± 0.76 million years (Eocene). The crater is under the sea and buried beneath marine sediments.