Geology – How did all those boulders get there?
The cliffs, granite ponds, and rock-strewn rolling slopes of the Lake Sagamore area were created by vast glaciers, pushing southwards from central Canada in sheets of boulder-studded ice over a mile thick. During the past 2 million years, four “ice ages,” each lasting hundreds of thousands of years, were briefly interrupted by warmer intervals. The […]
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