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Volcanic ash consists of fragments of rock, mineral crystals, and volcanic glass, produced during volcanic eruptions and measuring less than 2 mm (0. 079 inches) in diameter. Volcanic ash consists of powder-size to sand-size particles of igneous rock material that have been blown into the air by an erupting volcano. The term is used for the material while it is in the air, after it …
Depending on the eruption, most volcanic ash consists of small fragments of volcanic … What is volcanic ash? Volcanic ash is formed during explosive volcanic eruptions when gases dissolved in magma (molten rock) expand and escape violently into the air, or when water is heated by magma …
