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Thesaurus: graywacke

A conglomerate or grit rock, consisting of rounded pebbles sand firmly united together.

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Definitions

  1. n. A conglomerate or grit rock, consisting of rounded pebbles sand firmly united together.
  2. A conglomerate or grit rock, consisting of rounded pebbles sand firmly united together. Note: This term, derved from the grauwacke of German miners, was formerly applied in geology to different grits and slates of the Silurian series; but it is now seldom used.
  3. A conglomerate or grit rock, consisting of rounded pebbles sandfirmly united together.
  4. n. A conglomerate or grit rock, consisting of rounded pebbles sand firmly united together.