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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.
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.
Which process is most likely to produce a volcano with gentle slopes?
A volcano with gentle slopes is most likely produced by the process of basaltic lava flow, commonly associated with shield volcanoes. These volcanoes erupt low-viscosity lava that can travel long distances, allowing it to spread out and create broad, gently sloping sides. The eruptions are typically non-explosive, resulting in the gradual accumulation of layers of lava over time. Examples of such volcanoes include Mauna Loa and Kilauea in Hawaii.
What type of volcanoes are Broad gradual slopes?
Broad, gradual slopes are characteristic of shield volcanoes. These volcanoes are formed primarily by the eruption of low-viscosity basaltic lava that can flow over great distances, creating a wide, gently sloping profile. Examples of shield volcanoes include Mauna Loa and Mauna Kea in Hawaii. Their gentle slopes result from the relatively fluid nature of the lava, allowing it to spread out over large areas.
Lava is produced after the eruption and flows from the bottom from what type of volcano?
Lava is produced after the eruption and flows from the bottom of a shield volcano. Shield volcanoes have broad, gentle slopes and are primarily built up by the flow of low-viscosity basaltic lava, which can travel long distances. This type of volcano typically has non-explosive eruptions, allowing lava to flow freely from the summit and fissures. Examples include Mauna Loa in Hawaii and Kilauea.
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.
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 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.
