lava fountain

ALASKA VOLCANO OBSERVATORY GLOSSARY
A rhythmic vertical fountainlike eruption of lava.
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USGS PHOTO GLOSSARY OF VOLCANIC TERMS
A jet of lava sprayed into the air by the rapid formation and expansion of gas bubbles in the molten rock is called a lava fountain. Lava fountains typically range from about 10 to 100 m in height, but occasionally reach more than 500 m. Lava fountains erupt from isolated vents, along fissures, within active lava lakes, and from a lava tube when water gains access to the tube in a confined space (see type of explosive activity where lava enters the sea, from the USGS Hawaiian Volcano Observatory).
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Photograph by J.D. Griggs on 5 October 1983.
Lava fountain of the Pu`u `O`o cinder and spatter cone on Kilauea Volcano, Hawai`i.
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Did you know?
A lava fountain erupted by Izu-Oshima volcano in Japan in 1986 reached a height of 1,600 m, the highest ever recorded.
The highest lava fountain observed in historical time at Kilauea Volcano in Hawai`i reached about 580 m above the vent during an eruption in Kilauea Iki Crater in 1959.
The world's longest continuous lava fountain in historical time was erupted from the 25-km long Laki Fissure in southern Iceland in 1783.

Glossary of volcanic terms. - University of Wisconsin Oshkosh. . 2001.

Look at other dictionaries:

  • Lava fountain — A lava fountain is a volcanic phenomenon in which lava is forcefully but non explosively ejected from a crater, vent, or fissure. Lava fountains may reach heights of up to 500m. They may occur as a series of short pulses, or a continuous jet of… …   Wikipedia

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