Deep Bay Crater

Deep Bay Crater

Courtesy of Image courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center

http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=STS41G&roll=33&frame=36


Deep Bay Crater in Saskatchewan, Canada, is about 5 km wide and 220 m deep. Such a deep circular lake is not typical of this region, which is dominated by shallow lakes gouged out by glacial erosion.

Although it is not obvious from the surface, Deep Bay is a complex impact structure with a submerged central uplift. It is a near circular bay, about 5 km wide and 220 m deep, in the otherwise shallow Reindeer Lake. The shoreline is 11 km in diameter, partially surrounded by a 13-km-diameter ridge. The ridge reaches heights of 100 m above the lake surface. It is likely the outer rim of the impact structure. Such deep circular lakes are unusual in this region, which mostly has shallow gouges shaped by glacial erosion.