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inside a shield volcano is a hot surface of mamga

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16y ago

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What is shield volcanoes lava composed of?

TThe magma is composed of gas and is silica rich.


Silica-rich magma erupts from the shield volcanoes giving them there broad flat shape?

False. The magma of shield volcanoes is silica-poor.


What are the characteristics of magma associated with shield volcanoes?

Basaltic, runny magma.


The magma of shield volcanoes is rich in?

The magma of shield volcanoes is rich in basalt. Basalt magma is low in viscosity and gas content, allowing it to flow easily and lead to the broad, gently sloping shape characteristic of shield volcanoes.


What liquid is in shield volcanoes?

Shield volcanoes may contain molten rock called magma, particularly of a basaltic composition.


Do shield volcanoes have high silica or low silica?

Shield volcanoes have low silica magma, which is more fluid and runny compared to magma with higher silica content. This low silica content contributes to the gentle, flowing eruptions characteristic of shield volcanoes.


Do shield volcanoes have high viscosity?

No, shield volcanoes have low viscosity lava due to their composition of basaltic magma, which has low silica content. This low viscosity allows the lava to flow easily and spread out over a wide area, resulting in the gentle, sloping shape characteristic of shield volcanoes.


Why are there different shaped volcanoes?

Different shaped volcanoes occur because of the way the magma flows. Three types of volcanoes are shield, composite, and caldera.


Which type of magma causes quiet volcanoes?

Mafic magma (low in silica content) typically causes quiet eruptions because it is less viscous and flows more easily, leading to gentle lava flows. These eruptions are characterized by low explosivity and can result in shield volcanoes or lava plateaus.


What Gas Content does a Shield Volcano have?

Shield volcanoes typically have a low gas content due to their low-viscosity lava flows that allow gases to escape easily during eruption. This results in eruptions that are generally less explosive compared to other types of volcanoes.


What type of volcano is characterized by low silica magma and relatively nonviolent eruptions?

flood basalt, lava dome, and shield volcanoes do.


Does a shield volcano have runny lava?

In volcanoes that have lower amounts of volcanic gases in the magma. A good example is the volcanoes in the Hawaiian islands. Volcanoes with more gases in the magma tend to erupt explosively (Mt. St. Helens, Vesuvius) and have a thicker, slower moving lava.