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. The term volcanic ash is also often loosely used to refer to all explosive eruption products (correctly referred to as tephra), including particles larger than 2 mm.
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- Ash cloud from the 2008 eruption of Chaitén volcano, Chile, stretching across Patagonia from the Pacific to the Atlantic Ocean.
- Along with water vapor and other hot gases, volcanic ash is part of the dark ash column that rises above a volcano when it erupts.
- Volcanic ash is a fine, powdery material composed of tiny fragments of volcanic glass and rock, which is ejected into the atmosphere during a volcanic eruption.
- Volcanic ash can cause a range of negative effects, including air and water pollution, respiratory diseases, and ecosystem damage.
- Volcanic-ash hazards are far reaching and disruptive, affecting more people, infrastructure, and daily activities than any other eruptive phenomena.
- In 1984, Rabaul, Papua New Guinea, was buried in volcanic ash that solidified cars in place and weighed down roofs to the point of collapse.
- Other articles where volcanic ash is discussed: Andisol: …the single property of having volcanic-ash parent material.
- Volcanic Ash is a quest item needed for The Ectoplasmic Distiller. In the Items category. Added in Classic World of Warcraft. Always up to date.
- Before you know it, the sky darkens and thick torrents of volcanic ash begin to fall from the sky, covering everything in a heavy, gray blanket of dust.
- Instead, volcanic ash is powdered rock material. Individual particles have a hardness of between 5 and 7 on the Mohs Hardness Scale.