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Mount St. Helens has produced lava flows in the past. However, the famous eruption in 1980 produced something much more dangerous: pyroclastic flows. These are avalanche-like currents of hot ash, rock, and gas that race out of a volcano. The initial pyroclastic flow from the lateral blast may have briefly been supersonic.
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What type of lava flow did mt st helens have?
The 1980 eruption of Mount St. Helens did not produce lava flows. It was a plinian eruption that produced aolumn of ash and pyroclastic flows. Pyroclastic flows are avalanche-like masses of hot ash, rock, and gas that rase away from an erupting volcano at speeds that can reachinto the hundreds of miles per hour.
Does Mount St Helens lava flow violently or quietly?
Lava can't flow violently. Highly explosive eruptions such as the 1980 eruption of Mount St. Helens do not produce lava flows: they produce clouds of ash, gas, and pumice. Mount St. Helens has produced "quiet" lava flows at times.
What type of landform is mount st helens?
Volcano
Where there warnings of mt st helens?
there were many warnings about mount St.Helen if they had an earthquake it would trigger the volcano to erupt causing the people to know if it will erupt or not
What are some names of a volcano?
mt. st. helens which is in the usa, mauna loa which is in hawaii, kiluea which is in hawaii, and popocatepetl which is in mexico Etna is in Sicily, Vesuvius is in Italy Krakatoa is in Indonesia
Did Mt St Helens have a lava flow?
Yes.
Did mt st helens have a pyroclastic flow?
Yes. Mount St. Helens produced many pyroclastic flows.
Where was the explosion of mt st Helens?
At Mt. St. Helens.
What type of valcano is mt st Helens?
Mount St Helens is a composite cone (strato) volcano.
Does mt st helens have pyroclastic flow?
No. It has a crater, which is not quite the same as a caldera.
What type of volcanoe is Mt St Helen?
Mt. St Helens is currently an active volcano, in portland.
What Volcano in the northwestern US?
Mt. St. Helens Mt. St. Helens
What type of crust does Mt st helens have?
oceanic and continental
What type of plateboundry was mt st helens?
A convergent plate boundary.
How many miles is Tacoma from Mt Rainier and Mt St Helens?
About 92 miles to Mt. St. Helens from Tacoma
What type of climate does mt st helens have?
If you are a very cute boy it is for you it is hot
When was the first eruption of mt st helens?
Mt St Helens first erupted on May 18, 1980
