page_title: Volcanic bomb
hierarchical_section_title: Volcanic bomb
caption_attribution_description: English: This is a picture of a lavabomb at Strohn Germany. However, it is not likely that this is a natural bomb, it is pushed up and downward in a volcano. It weighs about 120 tons and is too heavy to be hurled like real lavabombs from a volcano. Deutsch: Diese Lavabombe liegt in Strohn, Deutschland. Man denkt, dass sie für eine lange Zeit auf- und abgerollt ist. So hat sie einen Durchmesser von 5 Metern erreicht. Nederlands: Deze lavabom ligt in Strohn, Duitsland. Deze lavabom is waarschijnlijk ontstaan door het op en neer bewegen van een grote lavaklomp in een vulkaan. Hierdoor is deze lavabom 5 meter in doorsnee. Hij weegt ongeveer 120 ton en is te zwaar om als echte lavabom uit een vulkaan te worden geslingerd. Français&#160;: La bombe volcanique de Strohn en Rhénanie-Palatinat, Allemagne, découvert en 1969, pèse environ 120 tonnes et a un diamètre de 5 mètres. Il a été émis lors d'une éruption volcanique en 8300 av. J.-C. Español: La bomba volcánica de Strohn en Renania-Palatinado, Alemania, descubierta en 1969. Pesa alrededor de 120 toneladas y tiene un diámetro de 5 metros. Fue emitida durante una erupción volcánica fechada hacia el 8300 a.C.
context_page_description: A volcanic bomb is a mass of molten rock larger than 64 mm in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks. Volcanic bombs can be thrown many kilometres from an erupting vent, and often acquire aerodynamic shapes during their flight. Bombs can be extremely large; the 1935 eruption of Mount Asama in Japan expelled bombs measuring 5–6 m in diameter up to 600 m from the vent. Volcanic bombs are a significant volcanic hazard, and can cause severe injuries and death to people in an eruption zone. One such incident occurred at Galeras volcano in Colombia in 1993; six people near the summit were killed and several seriously injured by lava bombs when the volcano erupted unexpectedly. On July 16, 2018, 23 people were injured on a tour boat near the Kilauea volcano as a result of a basketball-sized lava bomb from the 2018 lower Puna eruption.
context_section_description: A volcanic bomb is a mass of molten rock (tephra) larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks. Volcanic bombs can be thrown many kilometres from an erupting vent, and often acquire aerodynamic shapes during their flight. Bombs can be extremely large; the 1935 eruption of Mount Asama in Japan expelled bombs measuring 5–6 m (16-20 ft) in diameter up to 600 m (2,000 ft) from the vent. Volcanic bombs are a significant volcanic hazard, and can cause severe injuries and death to people in an eruption zone. One such incident occurred at Galeras volcano in Colombia in 1993; six people near the summit were killed and several seriously injured by lava bombs when the volcano erupted unexpectedly. On July 16, 2018, 23 people were injured on a tour boat near the Kilauea volcano as a result of a basketball-sized lava bomb from the 2018 lower Puna eruption.
  Volcanic bombs are known to occasionally explode from internal gas pressure as they cool, but in most cases, most of the damage they cause is from impact, or subsequent fire damage. Bomb explosions are most often observed in "bread-crust" type bombs.
caption: Lava bomb at Strohn, Rhineland-Palatinate, Germany, with a diameter of 5 metres and a mass of 120 tonnes. It was caused by a volcanic eruption in 8300 BC[citation needed].
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