Keewatin ice sheet

The Keewatin ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years. This included the following areas: * Eastern Montana * North Dakota * Eastern South Dakota * Western Minnesota * Alberta * Saskatchewan * Manitoba

Keewatin ice sheet

The Keewatin ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years. This included the following areas: * Eastern Montana * North Dakota * Eastern South Dakota * Western Minnesota * Alberta * Saskatchewan * Manitoba