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Petoskey Stones Ll
Photograph - Color Photography
A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral. The stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in Michigan's Upper Peninsula, and the northwestern portion of Michigan's lower peninsula. In some areas of Michigan, complete fossilized coral colony heads can be found.
April 27th, 2011
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