Mudflow

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Mudflow

Mudslide redirects here, it is also the name of a cocktail
List of cocktails

A cocktail is a mixed drink typically made with a distilled beverage that is mixed with other ingredients. If beer is one of the ingredients, the drink is called a beer cocktail....
.

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Mudslide redirects here, it is also the name of a cocktail
List of cocktails

A cocktail is a mixed drink typically made with a distilled beverage that is mixed with other ingredients. If beer is one of the ingredients, the drink is called a beer cocktail....
.
A mudflow or mudslide is the most rapid (up to 80 km/h / 50 mph) and fluid type of downhill mass wasting
Mass wasting

Mass wasting, also known as slope movement or mass movement, is the geomorphology process by which soil, regolith, and rock move downslope under the force of gravity....
. It is a rapid movement of a large mass of mud formed from loose earth and water. Similar terms are debris flow
Debris flow

A Debris flow is a fast moving mass of unconsolidated, saturated debris that looks like flowing concrete. They differentiate from a mudflow by terms of the viscosity of the flow....
(e.g. in high mountains), mudslide (not very liquid) lahars and mud stream (e.g. from volcanoes; see also lahar
Lahar

A lahar is a type of mudflow or landslide composed of pyroclastic material and water that flows down from a volcano, typically along a river valley....
).
However, these terms show a broad variety
in water content
Water content

Water content or moisture content is the quantity of water contained in a material, such as soil , Rock , ceramics, or wood on a volumetric or gravimetric basis....
(from loamy mud up to almost liquid),
in material (wet soil
Soil

Soil is the naturally occurring, unconsolidated or loose covering on the Earth's surface. Soil is composed of particles of broken rock that have been altered by chemical and environmental processes including weathering and erosion....
, sandy sediment
Sediment

Sediment is any particulate matter that can be sediment transport by fluid dynamics, and which eventually is deposited.Sediments are most often transported by water transported by wind and glaciers....
s and/or silt
Silt

Silt is soil or Rock derived granular material of a Particle size between sand and clay. Silt may occur as a soil or as suspended sediment in a surface water body....
, dirt, rock debris
Debris

Debris is a word used to describe the remains of something that has been otherwise destroyed. Debris is pronounced with a silent s and a long e....
, volcanic ash
Volcanic ash

Volcanic ash consists of small tephra, which are bits of pulverized rock and glass created by volcano eruptions, less than in diameter. There are three mechanisms of volcanic ash formation: gas release under decompression causing magmatic eruptions; thermal contraction from chilling on contact with water causing phreatomagmatic eruptions...
, small plants and even trees)
and in length, total mass
Mass

In physical science, mass refers to the degree of acceleration a body acquires when subject to a force: bodies with greater mass are accelerated less by the same force....
and velocity.

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