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  1. Clastic rock made up of angular fragments of such size that an appreciable percentage of rock volume consists of particles of granule size or larger.
    Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
  2. A coarse-grained clastic rock, composed of angular broken rock fragments held together by a mineral cement or in a fine-grained matrix; it differs from conglomerate in that the fragments have sharp edges and unworn corners. Breccia may originate as a result of talus accumulation, explosive igneous processes, collapse of rock material, or faulting. Etymol: Italian, broken stones, rubble. Syn: conglomerate

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