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Higly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes tend to have thick and viscous magma with high silica content. This type of magma traps gases, leading to pressure buildup and explosive eruptions. Examples of explosive volcanoes include stratovolcanoes like Mount St. Helens.
What type of magma do highly explosive volcanoes have?
Highly explosive volcanoes typically have viscous, silica-rich magma known as rhyolitic magma. This type of magma contains high amounts of gas and is prone to causing explosive eruptions due to the trapped pressure within the magma chamber.
Volcanoes typically have the most explosive eruptions?
Large explosive eruptions are generally characteristic of stratovolcanoes.
Highly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes typically have magma that is high in silica content, which leads to increased viscosity. This viscous magma traps gas bubbles, creating significant pressure buildup within the volcano. When the pressure is released, it results in explosive eruptions. The most common types of magma associated with such eruptions are rhyolitic and andesitic magmas.
What do highly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes tend to have viscous, high-silica magma, primarily andesitic or rhyolitic in composition. This type of magma traps gases more effectively due to its thickness, leading to increased pressure buildup within the volcano. When the pressure is finally released, it results in violent eruptions characterized by pyroclastic flows and ash clouds.
Higly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes tend to have thick and viscous magma with high silica content. This type of magma traps gases, leading to pressure buildup and explosive eruptions. Examples of explosive volcanoes include stratovolcanoes like Mount St. Helens.
What type of magma do highly explosive volcanoes have?
Highly explosive volcanoes typically have viscous, silica-rich magma known as rhyolitic magma. This type of magma contains high amounts of gas and is prone to causing explosive eruptions due to the trapped pressure within the magma chamber.
Volcanoes typically have the most explosive eruptions?
Large explosive eruptions are generally characteristic of stratovolcanoes.
Highly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes typically have magma that is high in silica content, which leads to increased viscosity. This viscous magma traps gas bubbles, creating significant pressure buildup within the volcano. When the pressure is released, it results in explosive eruptions. The most common types of magma associated with such eruptions are rhyolitic and andesitic magmas.
Is a shield volcano non explosive or explosive?
Shield volcanoes are generally not explosive. However, soemtimes a type of explosive event called a phreatic eruption can occur if the magma comes in contact with water.
Are volcanoes that always erupt explosively located on water or land?
Volcanoes that always erupt explosively can be located on both water and land. The type of eruption is determined by the composition of the magma within the volcano, not its location. Explosive eruptions are typically caused by the high pressure buildup of gas within the magma.
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 is the meaning of acidic magma?
Acidic magma is characterized by high silica content, resulting in a more viscous and explosive type of lava when erupted. This type of magma commonly leads to explosive volcanic eruptions, as the high silica content traps gases, leading to pressure buildup and explosive release. Examples of volcanic features associated with acidic magma include stratovolcanoes and pyroclastic flows.
What type of magma does a composite volcano have?
Composite volcanoes typically have andesitic magma, which is intermediate in composition between felsic and mafic magmas. This type of magma is more viscous than mafic magma, leading to explosive eruptions and the buildup of lava and ash layers that form the characteristic steep-sided cone shape of composite volcanoes.
What determines the strength of a volcanic eruption?
The explosiveness of a volcano is determined by two factors. The obstacles in the magma's path and the type of volcano. When there is chunks of rock and hardened magma in the vent the liquid magma builds up until it sprays out at hufe ferocity. If there is little or no debris then the magma simply spews out. As for the type of volcano when the tectonic plates move apart it forms a row of GENTLE volcanoes but when they crash together the volcanoes are much more explosive.
What type of magma will produce explosive eruptions?
Magma with high silica content (felsic magma) tends to produce explosive eruptions because it is more viscous and traps gases, leading to pressure build-up before they are released explosively. This type of magma commonly forms in subduction zones where oceanic plates are being subducted beneath continental plates.
Why do some volcanoes erupt ash and others lava?
The style of the volcanic eruption is very dependent on the amount of dissolved gas that is in the magma (liquid rock below the surface). If there is a high gas content the volcanic eruption will be explosive and create a log of ash. If the gas content is low the eruption produces more lava flows. An example of a high gas content eruption was the last major eruption of Mt. St. Helens in 1980. An example of a low gas content eruption would be the Hawaiian volcanoes.
