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Why is this rock here? Does it appear out of place?
This stone is a Glacial Erratic carried by a glacier
and deposited here as the glacier melted. During the last glacier, known as the Wisconsin glaciation, Vermont was covered with ice a mile high for 40,000 years. About 11,000 years ago, this glacier began to melt in a climatic warming trend. It left behind all of the material that it carried, including glacial erratics such as these boulders scattered over Burton Island that are especially common near the shore. |
Vermont State Parks - Burton Island - Trail Head
