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fast ice, flour bay

Fast ice at Lake Superior's Flour Bay- -about 100 km north of Sault Ste. Marie Ontario.

 

Fast ice is an extensive unbroken sheet of ice that is “fastened” to the shoreline or shoals; the ice forms from freezing temperatures (air and water), waves, drift ice, and snowfall. The Flour Bay fast ice varies from 3-6 meters in height.

 

This sheltered bay, on eastern Lake Superior, is part part of the Mamainse Point Formation: an area of the Midcontinent Rift System characterized by Precambrian (Mesoproterozic) volcanic activity over a billion years ago.

 

 

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Uploaded on March 15, 2017
Taken on February 20, 2017