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When a volcano erupts, sometimes the heat melts the ice and snow on the top of the volcano. This releases a large amount of water that gets mixed with the ash from the erupted volcano. The mixture of ash and water rushing down the volcano can pick up lots of debris. Because of this, major mudflows can occur.
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∙ 14y ago
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∙ 9y agoMudslides present problems for people living around volcanoes since a volcano is essentially a mountain terrain. If heavy rain occurs or the volcano becomes active, the threat of a mudslide increases.
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∙ 6y agoVolcanic muflows form when large amounts of volcanic ash mix with water to form a dense slurry. This mixing can occur when heavy rain falls on existing ash deposits or when hot ash from an eruption melts snow and ice near a volcano's summit.
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∙ 7y agoThere are two scenarios :
Many terrestrial volcanoes are high and have snow/glaciers on their flanks. When lava erupts in this situation, the glaciers/snow melts rapidly and torrents of water rush down the volcano's flanks mixing with ash and erupted debris causing a mud flow to develop these mud flows are called "lahars". This type of mud flow is contemporaneous with the eruption.
The second sort of mud flows happen where a volcano has erupted a vast quantity of thick ash deposits over a wide area round the volcano. These ashes are very friable and in tropical regions tropical rains can cause the ash to be caught up with the runoff to make thick fast moving (sometimes hot) mud flows. This type of mud flow can be a continuing danger long after the volcanic eruption has finished.
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∙ 11y ago'Mud Pools' are not the correct term used to identify Erectus Maximorphus abnormalities found in close vicinity of volcanoes, they are a naturally occuring groupings of hugeus penisl
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∙ 10y agoThe lava which erupts out of volcanoes is extremely hot, and it can melt snow, ice, or frozen ground, which can then become mud, which can flow.
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Primary effects of the Montserrat eruption?
primary: - lava flows - ash flows - gas - blasts secondary: - debris flows - mud flows hope this helps
What is the chemical formula for scoria?
In 1768/69 the Cornish Copper Company reclaimed land using crushed slag (scoria) and recycled its smelter waste to create cast building blocks for the docks it built at Hayle. It was also used extensively for the workers' cottages, shops, pubs and civic buildings.
What happens when volcanic ash and water mix?
If relatively small amounts of water mix with ash it makes the ash heavier, which can cause roofs to collapse. Larger amounts of water can turn the ash int mud and cause dangerous mudflows called lahars.
Why are extrusive rocks sometimes referred to as volcanic?
An extrusive rock is a rock that has been deposited at the earths surface as a liquid/fluid, coming to the surface form a depth through a fissure in the earth as a liquid/fluid. The most common type of liquid rock is a magma and magmas erupting at the surface are called "volcanoes" and thus the rocks are called "volcanic" rocks. However there are also volcanoes to be found that have nothing to do with molten rock magmas. These are called "Mud" volcanoes and they are caused by de-watering processes in rocks. The muds brought to the surface are also technically extrusive and these are NOT volcanic rocks.
How does mud form in a river?
It's very simple: soil + water = mud
What are some hazards of volcanic eruptions?
lava flows clouds of ash hot volcanic gases landslides avalanches of mud snow and rock
What happens when a plate moves?
usually there would earthquakes, volcanic eruptions, and mud slides
What is another name for volcanic mud flows like those formed in the Mount St. Helens eruption?
moya
Identify thre ahzards of volcanic eruptions?
A volcanic eruption is a beautiful and terrifying phenomenon. The key hazards are the gasses which can cause suffocation, earthquakes, ash deposition, and pyroclastic flows. A pyroclastic flow is the cascading of quantities of often superheated ash, rock, mud, and other material from the sides of a volcano itself at great speed and force.
Are mudflows caused by gravity?
Gravity could be described as a necessary, but not sufficient condition to create mud flows. Every location on Earth experiences gravity, but most locations do not also have mud flows. You need mud, and the mud has to be located in a certain kind of terrain, before gravity will then cause the mud to flow.
Are mudflows caused gravity?
Gravity could be described as a necessary, but not sufficient condition to create mud flows. Every location on Earth experiences gravity, but most locations do not also have mud flows. You need mud, and the mud has to be located in a certain kind of terrain, before gravity will then cause the mud to flow.
How do mudslides form?
Mud that lay on a hill and when heavy rain comes the mud flows down the slope to create a MUDSLIDE.
What are some less hazards from volcanic eruption?
The only effective method of risk mitigation is evacuation prior to such eruption from areas likely to be affected by pyroclastic flows. 5 - Lahars ( volcanic mud and debris flows) are a common major volcanic hazard for people and property. Laharslikewise proceed very quicky and possess great destructive power.
How do mud flows differ from earth flows?
mud flows differ from earth flows due to the fact that earth flows is slow moving downslope movement of water-saturated,clay-rich,sediment, most characteristics of humid regions and mud flow is soil and rock fragments containing a large amount of water.
What are three hazards of volcanoes?
3 hazards of a volcanic eruption are.... - lava flows - clouds of ash - hot volcanic ashes
What is the name of volcanic dust made into mud by rainfall?
Lahar
Can Volcanic ash mix with rain to form mud?
Yes.
