pahoehoe is the more smooth lava flows.
a'a is the very jagged, sharp lava.
pahoehoe is the more smooth lava flows.
a'a is the very jagged, sharp lava.
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It is very slow flowing lava, so slow you can't even see it moving. However this can change, as magma from below can produce a violent explosion.
The difference in the flow of lava is determined by how viscous the magma of the volcano is. For Stratovolcanoes like those seen in the Cascades Range of the North Western United States, there magma is normally very sticky as it has a high concentration of Silica. The higher the concentration of silica within magma makes it stickier and will make it resist flow. This is why Stratovolcanoes often will erupt explosively, as there is no way for the gasses to simply passively leave during a lava flow. This viscosity traps the gasses and makes explosive eruptions much more likely as once the gasses finally are able to escape the level of gasses have built up to catastrophic levels within the volcano. On the other hand Hawaiian style volcanoes have a very low silica content within their magma chamber, and therefore have very flowable lava. This allows for the fire fountains and lava channels that are often times shown in magazines. These eruptions are often times passive in nature, as the gasses dissolved in the magma are easily able to escape during an eruption.
because pahoehoe is a slow erupting kind of lava as well as the fact that kilauea is a hawaiian volcano (that is the type)
It is thick, slow moving lava called Pyroclastic Flow.also known as high viscosity
Lava flows are usually slow moving, giving people time to escape.
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Aa
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Compared with the lava in composite volcanoes, hawaiian lava has a slow silica content, is runny, and erupts at a higher temperature.
these are two ways on how: 1. a water spray can cool down a larva flow, 2. and using really heavy stones (10-40 tones)
There are two types of lava in the Hawaiian language, the fast flowing lava is called pahoehoe, and slow flowing 'A'a
It is very slow flowing lava, so slow you can't even see it moving. However this can change, as magma from below can produce a violent explosion.
The difference in the flow of lava is determined by how viscous the magma of the volcano is. For Stratovolcanoes like those seen in the Cascades Range of the North Western United States, there magma is normally very sticky as it has a high concentration of Silica. The higher the concentration of silica within magma makes it stickier and will make it resist flow. This is why Stratovolcanoes often will erupt explosively, as there is no way for the gasses to simply passively leave during a lava flow. This viscosity traps the gasses and makes explosive eruptions much more likely as once the gasses finally are able to escape the level of gasses have built up to catastrophic levels within the volcano. On the other hand Hawaiian style volcanoes have a very low silica content within their magma chamber, and therefore have very flowable lava. This allows for the fire fountains and lava channels that are often times shown in magazines. These eruptions are often times passive in nature, as the gasses dissolved in the magma are easily able to escape during an eruption.
because pahoehoe is a slow erupting kind of lava as well as the fact that kilauea is a hawaiian volcano (that is the type)
the most dangerous type of lava is sticky lava because slow moving acid lava is more vicious
It is thick, slow moving lava called Pyroclastic Flow.also known as high viscosity
The type of rock depends on how the volcano erupted and how quickly the lava cooled. Gaseous lava that is cooled is pumice, a stone so light it floats on water. Thick, slow moving lava hardens into rhyolite. Volcanoes in the Hawaiian islands sometimes have their lava cool quickly, forming a smooth, glassy black rock called obsidian. These are all classified as igneous rocks.