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What makes volcanoes non-explosive?
Non-explosive volcanoes will have low concentrations of gas in the magma.
What is similar about cinder cone volcanoes and shield volcanoes?
Both shield volcanoes and cinder cones erupt low-viscosity basaltic lava and have eruptions that are only mildly explosive if at all.Cinder cones are small, steep-sloped volcanoes composed primarily of a chunky variety of basalt called scoria.Shield volcanoes are large, gently sloping volcanoes composed primarily of layers of lava flows.
Why does granitic magma cause explosive eruptions?
Granitic magma is highly viscous (resists flow). This high viscosity results in the entrapment and buildup of gases which create explosive eruptions.
Does a composite volcano have both quiet and explosive eruptions?
yes a composite volano is both quiet and explosive
What kind of eruption form composite cone volcano?
Composite volcanoes are highly variable in what they erupt. Most often, eruptions will release clouds of ash, pumice, and rock fragments. In some cases they fountain or extrude lava.
Name the different types of volcanoes according to their shape?
There are three types of volcanoes which have different shapes and types of eruptions. * Shield Volcanoes - are low and flat and have small, flowing eruptions. * Composite Volcanoes - are a mixture between shield volcanoes and cone volcanoes, their eruptions are explosive. * Cone Volcanoes - are the tallest and largest volcanoes, and they have VERY explosive eruptions.
Do shield volcanoes produce quiet eruptions and explosive eruptions?
Shielf volcanoes generally produce "quiet" eruptions. Explosive eruptions are rare.
Do shield volcanoes produce quiet or explosive eruptions?
Eruptions at shield volcanoes are almost always non-explosive.
Volcanoes typically have the most explosive eruptions?
Large explosive eruptions are generally characteristic of stratovolcanoes.
Why do the volcanoes in Japan have explosive eruptions?
Volcanoes in Japan have explosive eruptions because there is a a magma chamber that has not completely move along the mantle yet so when it erupts it has explosive eruptions.
What is the name of the explosive types of volcanoes?
Explosive types of volcanoes are typically referred to as stratovolcanoes or composite volcanoes. These volcanoes are characterized by their steep sides and explosive eruptions caused by trapped gases and thick, viscous lava. Examples include Mt. St. Helens in the United States and Mt. Fuji in Japan.
Do shield volcanoes have quiet eruptions?
Because shield volcanoes have lava flows rather than explosive eruptions, they are much quieter than other types of volcanoes. Regardless, shield volcanoes are among some of the largest in the world.
What volcanoes are formed by explosive eruptions that are followed by lava outpourings?
composite volcanoes
Are shield volcanoes explosive?
Very rarely. Shield volcanoes are formed from the eruption of low-viscosity, gas-poor magma which has very little potential to explode. On rare occasions explosive eruptions may occur when magma comes in contact with groundwater.
What cone volcano is small and explosive?
Cinder cone volcanoes are small with mildly explosive eruptions.
Is a cinder cone volcano non explosive?
Cinder cone volcanoes are generally considered to be non-explosive compared to stratovolcanoes. They typically erupt with fire fountains and release lava flows rather than explosive eruptions with ash and pyroclastic flows. However, some cinder cone eruptions can exhibit some degree of explosivity depending on the gas content of the magma.
What are the different types of volcanic eruptions?
Non-explosive and Explosive
