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Does low silica magma cause explosive volcanic eruptions?
Not usually. Explosive eruptions are more often to magma with high or moderate silica levels.
Do silica-rich magma cause explosive eruptions?
yes
Why is silica rich magma associated with explosive eruptions?
Silica-rich magma has high viscosity, which can trap gas bubbles. When pressure builds up, the gas can cause explosive eruptions as it tries to escape through the thick magma. The high silica content also promotes the formation of explosive pyroclastic materials during an eruption.
What type of magma that tends to cause explosive eruptions has a what?
Magma that tends to cause explosive eruptions is typically high in silica content, making it thick and viscous. This results in gas build-up and pressure within the magma chamber, leading to explosive eruptions.
What are two reasons that magma with a high silica content tend to cause explosive eruptions?
Magma with a high silica content tend to cause explosive eruptions because it has a stiff consistency and blocks the vents. When magma pushes from behind it more pressure happens which means the eruption will be explosive. It also prevents gas and water vapor from getting out. The gases will expand until it explodes.
Why do volcanic eruptions differ?
The main cause of differences in volcanic eruption characteristics is due to the viscosity of the magma. High viscosity magmas are high in sticky silica which traps gas and produces explosive eruptions. Low viscosity magmas are low in silica and produce eruptions with far less energetic characteristics.
What is the specific water vapor and silica conditions that cause differences in eruptions?
Water vapor can make a volcano explode into millions of pieces. Therefore the silica will put it back together, with gravity on its' side. Then lava will concave and erupt therefore making everything in its path rubble.
Does thin magma cause explosive eruptions?
No, quiet eruptions.
What type of eruptions cause a cinder cone?
Explosive
Do both quiet and explosive eruptions cause craters?
YES
Can Gas trapped in magma under high pressure can cause explosive eruptions.?
Yes. The gas is actually the primary driving force behind explosive eruptions.
Gas trapped in magma under high pressure can cause explosive eruptions.?
Yes. The gas is actually the primary driving force behind explosive eruptions.
