Sentence Examples


  • It includes chalky limestones, siliceous earths, red clay, and, at the top, a layer of mudstone composed mainly of volcanic dust.
  • Mudstone, shale, slate: these exhibit in greater or less perfection the properties above described according to their freedom from impurities.
  • At Helwith in Ribblesdale, the hard, dark grey-green mudstone quarried there is much in demand today for producing skid resistant roadstone.
  • In Russia and South Africa, gently deposited mudstones and limestones suddenly give way to massive dumps of pebbles and boulders.
  • In this area and at Lechlade, the Upper Thames Valley is floored by the gray mudstones of the overlying Upper Jurassic Oxford clay.

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