摘要：AbstractA brief literature review on the breccias of contrasting origin, their diagnostic signatures along with related terminologies is presented here. The importance of individual breccia types and their geological implication has also been reviewed. The present study suggests that breccia is formed either by igneous, sedimentary and tectonic processes or a combination of these. This review is mainly focused on the most common seven sub-classes, (i.e.,volcanic,igneous-hydrothermal, chert,collapse,fault,impactandseismic)and the specification of the processes involved in their formation, which subsequently brings more clarity in its classification and characterization.
