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.
low silica, produces volcanic bombs.
Highly felsic lava. Lava that is high in silica content. Highly viscous lava.
The more silaceous the lava, (higher silica content), the more explosive the eruption.
higher silica, sio % creates a thicker lava, lower silica sio% creates a thinner, more runny lava viscosity and resistance
lava rich in silica
Obsidian is volcanic glass, derived from the quick cooling of high silica lava.
silica is light colored lava
The lava is silica-rich, so it clogs in the vents. The pressure builds, and boom.
It was a quiet eruption and it was low in silica
No. Felsic lava is rich in silica and feldspar.
Basic volcanic lavas are those which have a low silica (45 - 52%) and a high iron and magnesium content. The term "basic" in this context is somewhat outdated. Modern scientists generally prefer to call such lava mafic.
Lava that is low in silica tends to have lighter rocks come out of it.
No. Pillow lava is basaltic, so it has a low silica content.
The lava that comes out of Mt. Fuji is silica-poor. I am actually looking for the type of rock fragments comes out also.
When lava flows through a patch of silica it become thick. When the thick lava hits water, it boils the water and traps the gasses. These gasses make a violent Explosion.
What type of eruption results from low silica lava
Lava that is low in silica tends to flow more easily. This is because it's thin and runny, unlike lava that is high in silica, which tends to be very thick.
The more silica, the slower the lava flows and the more viscous it is.
Lava with high silica content will erupt explosively, if it has low silica content it will flow.
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 will determine if the lava is hot and runny or thick and slow!
Rhyolitic lava has the highest silica content at 70% or higher, Basaltic lava has the least with 50% or less and Andesitic lava with anything in between.
Lava from volcanoes will often contain silica. Lava with a high amount of silica flows slowly and will produce a volcano with sloping sides. Lava with a low content of silica flows quickly and spread great distances to form plateaus.