Chatter mark
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A Chatter mark is one or, more commonly, a series of marks made by vibratory chipping of a bedrock surface by rock fragments carried in the base of a glacier. Marks tend to be crescent-shaped and oriented at right angles to the direction of ice movement.[1]
In machine tools a chatter mark is an irregular surface flaw left by a wheel that is out of true in grinding [2] or regular mark left when turning a long piece on a lathe, due to machining vibrations. [3]
[edit] References
- ^
- Dictionary of Geological Terms, Third Edition (1984). American Geological Institute Publications. Robert L. Bates and Julia A. Jackson, Editors.
- ^ http://www.toolingu.com/definition-250230-5546-chatter-mark.html
- ^ http://de.wikipedia.org/wiki/L%C3%BCnette_(Drehen)
[edit] External links
- Dictionary of Geological Terms, Third Edition (1984). American Geological Institute Publications. Robert L. Bates and Julia A. Jackson, Editors.
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