A noticeable feature when describing either breccia and/or conglomerate is clast angularity, generally breccia is more angular while conglomerate is more rounded, of course it must be emphasised that the boundaries between the rock types is blurred and there may be a high degree of variability. The angularity or roundness of the clasts within breccia/conglomerate might be used as evidence of the amount of transportation that has occurred, i.e. more roundness might indicate greater transport/higher energy. Clast size might also be a factor, smaller size would require less energy to be transported a further distance.
