What Are Volcanic Materials?
What Are Volcanic Materials? Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra. What are the materials extruded by a volcano? GASES – H2O, CO2, SO2, H2S, CH4, N2, etc. … LAVA FLOWS – which solidify to form two types of lava rock: PAHOEHOE (ropy texture) and AA (sharp-edged, blocky