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What is a mud flow formed when volcanic ash and debris mix with water?
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How is a lahar different from a debris flow that may occur in southern California?
A lahar is specifically a mudflow of volcanic origin, ruslting from water mixing with volcanic ash. The debris flows in Southern California com from the soil and material weathered from preexisting rock.
Is pahoehoe considered pyroclastic debris?
No. Pahoehoe is considered a lava flow. Pyroclastic debris consists of volcanic ash, pumice, and lapilli rather than lava flow material.
Sometimes volcanic ash and debris rush down the side of a volcano is called what?
Pyroclastic flow
Is AAA a form of volcanic rock?
AAA is nothing in relation to volcanoes. A'a is a variety of volcanic rock, formed from a basaltic lava flow with a jagged surface.
How can you tell if a mesa or butte was formed by lava?
Mesas and buttes are formed by differential erosion where a tough layer of rock protects weaker ones below it. If the top layer of rock is a volcanic rock such as basalt, then it was formed as an indirect result of volcanic activity. The whole rock formation may not by volcanic, as lava may flow over sediment.
What rock can flow in water?
Pumice can float in water. It is made from volcanic lava and has gases trapped in it, which makes it float.
What causes volcanics mountains to form?
Volcanic mountains are formed when lava reaches the Earth's surface. The lava becomes viscous and cannot flow away readily. This then accumulates around the vent and as different layers pile up, a volcanic mountain is formed.
Rapid downslope movements of debris and dirt mixed with rain?
Rapid downslope movements of debris and dirt that are mixed with rain are landslides. Thick mixtures of mud, water, and debris that moves rapidly or slow depending on conditions is a debris flow.
How do you make the water flow on virtual villagers 4?
drag a villager to the rocks blocking the water and they should start clearing the debris.
What formed a canyon?
Normally it's naturally formed by water flow and sometimes the spread of the tectonic plates.
Is a lahar is an example of a pluton?
No. A pluton is an underground body of intrusive igneous rock. A lahar is a mudflow formed from mixing water with volcanic ash.
What is the name for a volcanic avalanche containing hot volcanic gases ash and volcanic bombs?
pyroclastic flow
