The large, angular clasts in breccia make it possible to confidently ascertain the depositional history of the rock. The nature of these grains imply that they have not undergone much alteration, and have not traveled far from their source. Ideal for teaching students about rounding and sorting, as well as for identification & classification exercises. This contrasts well with conglomerate, a very similar rock with clasts that have traveled a long ways from their provenance.
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