Sentence Examples

  • The development of foliation in shaly rocks is undoubtedly closely akin to the production of cleavage in slates.
  • In thickness, but in this case layers of shaly coal are included.
  • The sea grew shallow, the deposits became conglomeratic and shaly, volcanic eruptions began, and the present folds of the Apennines were initiated.
  • A black and often shaly type called " calp " contains much clay derived from the same land-surface.
  • As the impurities increase in amount the clay rocks pass gradually into argillaceous sands and sandstones, argillaceous limestones and dolomites, shaly coals and clay ironstones.

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