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This is a type of rock composed of broken fragments of minerals or rocks cemented together by a fine-grained matrix. There are various types of breccia, each distinguished by its composition, origin, or the environment in which it formed:

Tuff Breccia: Formed from volcanic eruptions where fragments of older rocks, lava, or volcanic ash are ejected and then consolidate into a solid rock.
Agglomerate: A type of breccia containing larger volcanic fragments or bombs.
Sedimentary Breccia:
Fault Breccia: Occurs where rocks have been fractured and crushed due to faulting, with the fragments remaining close to their original position.
Talus Breccia: Formed from the accumulation and subsequent lithification of rock fragments that have fallen downslope, often found at the base of cliffs.
Impact Breccia:
Found at meteorite impact sites, where the shock of the impact has shattered the bedrock, and the fragments have been cemented together by the heat and pressure of the impact.
Crystal Breccia:
Composed primarily of crystal fragments, often found in pegmatitic rocks where crystals have been broken and cemented by later mineral growth.
Flow Breccia:
Formed from the flow of lava or pyroclastic material where the material moves in such a way that it breaks into fragments before solidifying.
Autobreccia:
A term sometimes used for breccias that form within or immediately adjacent to their parent rock