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  • Pyroclasts of different sizes are classified as volcanic bombs, lapilli and volcanic ash. Pyroclasts are then entrained in a buoyant eruption plume which can rise several kilometers into the air and cause aviation hazards. — “Pyroclastic rock - Wikipedia, the free encyclopedia”,
  • Volcanologists also refer to airborne fragments as pyroclasts. Pyro means "fire" and klastos means "broken"; thus pyroclasts carry the connotation of "broken by fire". — “Tephra - Wikipedia, the free encyclopedia”,
  • A model was proposed by based on observations on the Wall Mountain Tuff, suggests that the Rheomorphic structures such as a pervasive foliation and a preferred stretching direction of pyroclasts were formed during laminar viscous flow as the ignimbrite comes to a halt. — “Talk:Ignimbrite - Wikipedia, the free encyclopedia”,


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