Chatter mark

Chatter mark

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]

References

  1. ^
    • Dictionary of Geological Terms, Third Edition (1984). American Geological Institute Publications. Robert L. Bates and Julia A. Jackson, Editors.
  2. ^ http://www.toolingu.com/definition-250230-5546-chatter-mark.html
  3. ^ http://de.wikipedia.org/wiki/L%C3%BCnette_(Drehen)


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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Look at other dictionaries:

  • chatter mark — n. 1. a mark left by a tool that chatters 2. any mark or scratch on a rock surface caused by a large, heavy mass, esp. a glacier, sliding over it: also written chattermark …   English World dictionary

  • Chatter mark — Chat ter mark (a) (Mach.) One of the fine undulations or ripples which are formed on the surface of work by a cutting tool which chatters. (b) (Geol.) A short crack on a rock surface planed smooth by a glacier. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • chatter mark — noun 1. marks on a glaciated rock caused by the movement of a glacier • Hypernyms: ↑erosion, ↑eroding, ↑eating away, ↑wearing, ↑wearing away 2. a mark made by a chattering tool on the surface of a workpiece • Hypernyms: ↑blemish …   Useful english dictionary

  • chatter mark — 1. a mark left by a tool that has been chattering. 2. Geol. any of a series of irregular gouges made on rock surfaces by the slipping of rock fragments held in the lower portion of a glacier. [1885 90] * * * ▪ geology       small, curved fracture …   Universalium

  • chatter mark — chat′ter mark n. 1) bui a mark left on work by a chattering tool 2) gel any of a series of irregular gouges made on a rock surface by the movement of rock fragments over it • Etymology: 1885–90 …   From formal English to slang

  • chatter mark — noun Date: 1888 1. a fine undulation formed on the surface of work by a chattering tool 2. one of a series of short curved cracks on a glaciated rock surface transverse to the glacial striae …   New Collegiate Dictionary

  • Chatter — may refer to: Chatter (machining) or machining vibrations Contact bounce or chatter, a common problem with mechanical switches and relays Chatter (terrorist), the volume of communication to or from suspected terrorists Project CHATTER (1947–53),… …   Wikipedia

  • mark — chatter marks roll mark …   Mechanics glossary

  • chattermark — chatter mark also chat·ter·mark (chătʹər märk ) n. 1. A riblike marking on wood or metal, caused by vibration of a cutting tool. 2. Geology. One of a series of short scars made by glacial drift on a surface of bedrock. * * * …   Universalium

  • glacial landform — ▪ geology Introduction  any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …   Universalium

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