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Can you outrun a basaltic lava flow coming toward you?
In most cases, yes. Many basaltic lava flows don't even move at walking speed. However, there is at least one exception: the basaltic lava flows on the steep slopes of Mount Nyiragongo in Africa can move at up to 60 mph.
What type of Lava flow has affected the shape of the Hawaiian mountains?
The type of lava flow that has affected the shape of the Hawaiian mountains is primarily basaltic lava. Basaltic lava is low in viscosity and flows easily, creating broad shield volcanoes with gentle slopes, such as those found in Hawaii. These lava flows build up over time, creating the iconic mountainous landscapes of the Hawaiian Islands.
What type of lava flows easily?
Basaltic lava flows easily due to its low viscosity, which is caused by its low silica content and high temperature. This type of lava can travel long distances and create smooth, gentle slopes as it cools.
Do a shield volcano have thick lava?
No, shield volcanoes typically have relatively thin, fluid lava that can flow over long distances. This type of lava, often basaltic in composition, allows for the gentle, broad slopes characteristic of shield volcanoes. The low viscosity of the lava contributes to the volcano's shield-like shape, as it spreads out instead of piling up.
Why would pahoehoe and a'a lava erupt from shield volcanoes?
Pahoehoe and a'a are textural variaties of basaltic lava, which has a low viscosity, meaning it flows fairly easily. This is the reason for the gentle slopes of shield volcanoes.
Can you outrun a basaltic lava flow coming toward you?
In most cases, yes. Many basaltic lava flows don't even move at walking speed. However, there is at least one exception: the basaltic lava flows on the steep slopes of Mount Nyiragongo in Africa can move at up to 60 mph.
What type of Lava flow has affected the shape of the Hawaiian mountains?
The type of lava flow that has affected the shape of the Hawaiian mountains is primarily basaltic lava. Basaltic lava is low in viscosity and flows easily, creating broad shield volcanoes with gentle slopes, such as those found in Hawaii. These lava flows build up over time, creating the iconic mountainous landscapes of the Hawaiian Islands.
Does basaltic or rhyolitic lava flow faster?
Basaltic lava flows much faster than ryholitic lava.
What type of lava flows easily?
Basaltic lava flows easily due to its low viscosity, which is caused by its low silica content and high temperature. This type of lava can travel long distances and create smooth, gentle slopes as it cools.
Why would pahoehoe and a'a lava erupt from shield volcanoes?
Pahoehoe and a'a are textural variaties of basaltic lava, which has a low viscosity, meaning it flows fairly easily. This is the reason for the gentle slopes of shield volcanoes.
Is lava butte basaltic or granitic lava flow?
A lava butte is generally basaltic lava. Granitic lava flows (called rhyolitic when they form at the surface) are rare and do not cover much ground.
What slopes does a shield volcano have?
Shield volcanoes typically have gentle slopes with angles ranging from 2-10 degrees. These low-angle slopes are a result of the highly fluid lava flows produced by shield volcanoes, which travel long distances before solidifying. This gradual build-up of lava layers over time creates the characteristic broad, dome-like shape of shield volcanoes.
Why do gentle eruptions of lava produce gentle sided volcanoes?
Generally, when a volcano produces a gentle eruption the lava has a very low viscosity (it is very runny). This allows the lava to spread out quickly after it has exited the volcano but before it cools and hardens. This means that the lava will be able to spread further from the eruption site and thus gentle slopes are created. In a strong eruption, lava with a higher-viscosity is thrown out along with some rock fragments, this lava cannot flow as far away before it cools and so the volcano has steep slopes. Hope that helps!
What type of basaltic lava flow has a fairly smooth unfragmented ropy surface?
Pahoehoe lava flows exhibit a fairly smooth, unfragmented, and ropy surface. This type of basaltic lava flow has a characteristic appearance due to its low viscosity, which allows it to flow and solidify in a smooth manner.
Does basalt or rhyolite flow faster?
Basaltic lava flows much faster than ryholitic lava.
What type of lava comes out of tinakula?
Tinakula typically erupts basaltic lava, which is low in viscosity and can flow more easily compared to other types of lava. This type of lava often results in gentle to moderately explosive eruptions.
Which type of lava-basaltic lava or rhyolitic lava flows faster and why?
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
