Glacial lake bathtub rings

click to enlarge

click to enlarge

Glacial lake bathtub rings

Legdewood Drive in North Williston Vermont (Burlington) is on a highstand island. The island had a bedrock core of schisty rock covered with bouldery till. Lake sediments drape the slopes and are scribed with rings from falling lake levels. It looks like the old shore elevation is between 185-190 meters.

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