Acid Lava

Acid lava is produced when there is subduction at destructive plate boundaries. This lava is silica-rich and has temperatures of about 800°C. It is viscous and moves slowly. It also cools and solidifies quickly and produces steep sided volcanoes. As it solidifies quickly, it may solidify in the central pipe, blocking the passageway and causing a buildup of pressure, which produces violent eruptions. The solidified lava forms sheets of rough, jagged rocks called aá. Flows of boulders and rubble called block rubble and mounds of lava called domes are also formed.

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