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Breccia

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Breccia: A coarse grained rock with a grain size greater than 2 mm consisting of angular fragments implying minimum transport of material (see Conglomerates). Breccias are generally poorly sorted and commonly contain rock fragment derived from a restricted source. They are of various types:

  1. Cemented (breccias of this sort are often sub-aerial);
  2. Fault breccias;
  3. Volcanic breccia;
  4. Intraformational.
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