Sentence Examples

  • London Clay; also as nodules and concretions, e.g.
  • The water in them is exquisitely pure, except as it is impregnated by the carbonate of lime, which often forms concretions, called according to their size, pearls, eggs and snowballs.
  • Some regard the eclogite boulders as derived from deep-seated crystalline rocks, others as concretions in the blue ground.
  • Larger concretions formed under other conditions are known as "bean ore."
  • In iron-shot sands the limonite may form hollow concretions, known in some cases as "boxes."

How would you define concretions? Add your definition here.

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