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Lava domes are generally composed of felsic, highly viscous lava, usually dacite or rhyolite.
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∙ 9y ago
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Why is a lava dome called a lava dome?
A lava domes is a structure that forms when a volcano extrudes very viscous lava that builds into a dome-shaped pile rather than flow downhill.
What type of lava does a lava dome hold?
A lava dome holds very viscous lava, which is why it forms a dome rather than flowing away. Usually it is rhyolite or dacite.
Which forms inside the crater of a large volcano?
When magma slowly rises up the inside the crater of a larger volcano, it forms a Lava Dome.
Was mount st helen's lava a'a or pohoehoe?
Niether. The eruption of 1980 did not produce lava flows, it produced pumice and ash. Afterward it started building a dome of dacitic lava. Pahoehoe and a'a are basaltic lava, which has a different composition and a much lower viscosity.
What volcano has a rounded dome?
Lava Dome Volcano
Is Mt St Helens a lava dome?
No. Mount St. Helens is a stratovolcano. There is a lava dome in the crater.
Is lava dome a type of volcano?
Not exactly. Some volcanoes do consist of simply a lava dome, but most lava domes are found in or on stratovolcanoes.
How are lava plateaus and dome mountains the same?
magma extrusions, lava plateau on surface, dome underground then eroded.
Is a Dome volcano the same as a Lava Dome volcano?
Yes
What is lava dome volcano?
A volcano shaped like a dome.
What is a volcanic dome?
I don't know about viscous, but a lava dome is a steep-sided dome of thick lava extruding from a volcanic vent.a viscous lava dome is when the lava from the volcano contains alot of silica. Viscous=sticky. So the lava cools quickly of the sides of the volcano. And often a viscous lava dome volcano is explosive.
What is the lava composition for surtsey?
The magma and lava of Surtsey has a composition of alkali Olivine Basalt.
