Glacier Landforms: Chatter Marks

Chatter marks are a series of often crescent-shaped gauges chipped out of the bedrock as a >glacier drags rock fragments underneath it.

Striations and chatter marksChatter marks and glacial striations are often found together, as seen on the Niagara Dolomite in the eastern Upper Peninsula, Michigan. —Credit: Ron Schott

Last updated: 16 March 2020