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it is normally intermediate flow because of the silica content.
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What is the silica content of magma that would result in pyroclastic flow?
it is normally intermediate flow because of the silica content.
Magma that is high in silica and produces explosive eruptions?
Magma that is high in silica tends to be more viscous and traps gas bubbles, leading to explosive eruptions. The high silica content increases the magma's explosivity and can result in ash clouds and pyroclastic flows during eruptions. These types of eruptions are characteristic of stratovolcanoes, such as Mount St. Helens.
What is the viscosity of magma in a pyroclastic flow?
In a pyroclastic flow, the magma would almost always be considered high-velocity. The velocity and strength of the magma is a result of its chemical composition.
Which magma type resulted in a quiet eruptions?
That would normally be magma with a low silica content.
How does the amount of silica content change the viscosity of magma How does this affect the flow of magma?
The amount of silica and water affect the viscosity of the magma. The more viscous the magma, the slower the flow rate and the shorter and the thicker the flows. Silica makes for a more viscous magma.
What are some physical properties of magma from an explosive eruption?
Magma is a liquid form of rock beneath the surface of the planet. It has two properties, physical and chemical, you can notice if it is not the physical property of magma if it has the chemical properties of whatever it contains.
Magma that is low in silica and produces nonexplosive eruptions is called?
Magma that is low in silica and produces nonexplosive eruptions is called basaltic magma. As basaltic magma has a low viscosity due to its low silica content, it tends to flow more easily, resulting in nonexplosive eruptions with lava flows.
Explain how the presence of silica and water in magma increases the chances of an explosive eruption?
The higher the silica content of the magma, the more explosive the eruption. Magma enriched in silica has a higher viscosity (resistance to flow). Pressures are more likely to build up behind the thicker, high silica content magma and result in potentially more explosive eruptions.
What is granitic magma?
Granitic magma is a type of magma that has a high silica content, which makes it very viscous and prone to forming large plutonic rock bodies, such as granite. It is typically generated in volcanic arcs above subduction zones and is associated with explosive volcanic eruptions due to its high viscosity.
If a volcano contained magma with small proportions of water and silica would you predict a nonexplosive eruption or an explosive one why?
This would result in a non-explosive, "runny" eruption, similar to what you get in Hawaii, where the volcano simply pours out lava. Explosive reactions occur when rocks contain large amounts of water and silica, which flash into steam, resulting in a rapid expansion, and thus a dangerously explosive reaction.
If a volcano contained magma with small proportions of water and silica would you predict a nonexplosive eruption or an explosive Why?
This would result in a non-explosive, "runny" eruption, similar to what you get in Hawaii, where the volcano simply pours out lava. Explosive reactions occur when rocks contain large amounts of water and silica, which flash into steam, resulting in a rapid expansion, and thus a dangerously explosive reaction.
What volcano that is the product of gas-rich basaltic magma mostly in the form of loose pyroclastic material?
A cinder cone volcano is often the product of gas-rich basaltic magma erupting explosively, forming loose pyroclastic material like cinders and ash. These volcanoes have steep slopes due to the eruption style, and they typically have a relatively short lifespan compared to other volcano types.
