Shield volcanoes produce low-silica lava.
No. Shield volcanoes form from basaltic lava with a low silica content and a low water content.
No, shield volcanoes are characterized by lava with a low silica content. Consequently, the principal hazard of the volcano is the lava flow rather than the eruption itself.
Both erupt basaltic lava, which has a low silica content and a high temperature.
The magma is runny. Some characteristics of runny lava: low silica levels low gas levels high temperature
Runny lava. A few characteristics of runny lava: low silica levels low gas levels high temperature
A high silica content of the magma will form tall, steep-sided, or cone-shaped mountains. A low silica content produces shield shaped or broad volcanoes.
No. Shield volcanoes are fed by low-viscosity basaltic magma.
The Hawaiian island volcanoes are shield Volcanoes which have a low viscosity.
Like most composite volcanoes, Mount Fuji has a high silica content.
A low amount of silica will create a runny kind of lava found in shield volcanoes. That kind of lava is called Pahoehoe. A high amount of silica will make a thick kind of lava that is found in cinder cone volcanoes. That kind of lava is called Aa.
Composite volcanoes are often associated with moderate to high silica contestant, though in reality, the magma composition will vary over time.
Basaltic lava (low in silica).
low water and low silica: the eruption is not that strong; low water and high silica: the magma comes out like a toothpaste coming out of its tube high water and low silica: the lava flows fast and strong. high water and high silica: lava is pasty and thick and flows strongly
Silica content has an effect on the viscosity of the magma. A high silica content creates a more viscous magma. High viscosity magmas create explosive volcanoes such as cinder cones while low viscosity magmas create non-explosive volcanoes such as shield volcanos.
A shield volcano has mafic lava because the lava in the shield volcano has a low content of silica, resulting in low viscosity and a lot runnier lava than strato (composite) volcanoes.
Very low amount of silica.
Shield volcanoes produce flows of mafic lava, also called basaltic lava, which has a lower viscosity and low silica content. Oceanic crust has the same composition and so it is fairly easy for shield volcanoes to form here. Continental crust has a higher silica content. As a result, many continent based volcanoes produce much more viscous lavas which produce stratovolcanoes rather than shield volcanoes.
Most composite volcanoes are comprised of Andesitic lava. Andesetic lava has an intermediate silica content compared to granitic with a high silica content and basaltic with a low silica content.
No. The magma that feeds shield volcanoes generally has a low gas content.
Quiet volcanoes usually have a low viscosity, low silica magma.
Shield - Type / Shapegently sloping sidesComposite - Type / Shapevery steep sides at topShield - Viscosity of Magmalow viscosity / fast flowingComposite - Viscosity of Magmahigh viscosity / slow / thickShield - Silicalow silica contentComposite - Silicahigh silica contentShield - Temperature of Magmahot magmaComposite - Temperature of Magma'cool' magmaShield - Source of Magmadirectly from mantleComposite - Source of Magmamelted crustShield - Densityhigh densityComposite - Densitylow densityShield - Eruption Typequiet eruptions / constantly 'oozing'Composite - Eruption Typeexplosive eruptions / immense pressure / pyroclastic flowShield - Examplehawaii / hot spotsComposite - Examplemt. fuji / convergent boundary
Because low silica magmas tend to be hotter and more fluid/runny than high silica magmas.
sence it has very low viscosity it would have low silica, i think....not for sure.