Slumps often happen when a slope is undercut, with no support for the overlying materials, or when too much weight is added to an unstable slope. Figure 1. Slump material moves as a whole unit, leaving behind a crescent shaped scar.

Where do slumps occur?

Slump is common where clay-rich materials are exposed along a steep slope. Such oversteepend slopes naturally occur on the outside of meanders along the Red River. Slump is typically identified as the downward movement of a block of earth material along some curved surface of failure.

How does slumping happen?

A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a slope. ... Causes of slumping include earthquake shocks, thorough wetting, freezing and thawing, undercutting, and loading of a slope.

How does rockfall occur geography?

Rockfalls occur where a source of rock exists above a slope steep enough to allow rapid downslope movement of dislodged rocks by falling, rolling, bouncing, and sliding.

What is a slumping landslide?

Slump - a landslide consisting of a mass of material moving downslope as a unit, usually along a curved plane of failure. The removed mass of soil and rock leave an abrupt drop-off at the top of the landslide known as a scarp.

Slumping and Mass Movement - What Are The Issues? - GCSE Geography

25 related questions found

What is slumping in geography?

slump, in geology, downward intermittent movement of rock debris, usually the consequence of removal of buttressing earth at the foot of a slope of unconsolidated material.

How does a slump differ from a flow?

A slump is a type of mass wasting that results in the sliding of coherent rock material along a curved surface. ... A debris flow is the movement of a water-laden mass of loose mud, sand, soil, rock and debris down a slope.

How does slumping occur on soft coastlines?

Slumping occurs on a concave cliff face and contributes to this shape as successive slumps accumulate. Material at the slump foot (toe) has to be removed by wave action before more slumping can replace it. Mudflows occur on very steep slopes along the coastline.

Where does hydraulic action occur in a river?

Hydraulic action - This is the sheer power of the water as it smashes against the river banks. Air becomes trapped in the cracks in the rock of the river bank and bed, and causes the rock to break apart. Abrasion - When pebbles grind along the river bank and bed in a sand-papering effect.

What are slope processes in geography?

The slope processes include weathering, erosion, transport and deposition of the material. Weathering is the process by which material is prepared for transport. Weathering is the response of the materials within the lithosphere to conditions at or near its contact with the atmosphere, hydrosphere and biosphere.

What occurs during a slump quizlet?

What occurs during a slump? Slumps occurs when a large piece of a steep hill breaks away and falls. Compare and contrast landslides and mudflows. Both are sudden mass movements caused by gravity.

What's the definition of slumping?

1a : to fall or sink suddenly. b : to drop or slide down suddenly : collapse. 2 : to assume a drooping posture or carriage : slouch. 3 : to go into a slump sales slumped.

What does being in a slump mean?

To slump is to fall or slouch down. It's also a downturn in performance — a struggling ballplayer and a sinking economy are both in a slump. There are many kinds of slumps, but they all involve things going downhill. If you slide down in your chair, you slump. Other slumps are less physical.

What causes a rockslide?

A rockslide is a type of landslide caused by rock failure in which part of the bedding plane of failure passes through compacted rock and material collapses en masse and not in individual blocks. ... The rocks tumble downhill, loosening other rocks on their way and smashing everything in their path.

Is slump a deposition or erosion?

Lesson Summary. Gravity moves earth materials from higher elevations to lower elevations. Landslides, avalanches, and mudflows are examples of dangerous erosion by gravity. Slump and creep move material slowly downslope.

What is slumping posture?

Slumped posture is often caused by collapsing the upper body forward to use digital devices. Permission: Joseph E. Muscolino. Slumped spinal posture is a term that describes a slumped flexion posture of the spine. ... With slumped spinal posture, the pelvis is excessively posteriorly tilted compared to anatomic position.

Why does hydraulic action occur in jointed rocks?

Hydraulic action includes processes that result from the movement of water without the involvement of rock particles. The impact of waves causes variations in pressure due to the weight of the water and its movement. ... This is particularly the case when the cliff is made of well-jointed rock.

Why deposition takes place in a river?

When a river loses energy, it will drop or deposit some of the material it is carrying. Deposition may take place when a river enters an area of shallow water or when the volume of water decreases - for example, after a flood or during times of drought.

What is the name of the weathering process that would happen in streams or rivers?

Chemical weathering occurs when minerals in rock react with water. These chemical reactions physically weaken rock by altering its structure. Rocks in streambeds then become more susceptible to erosion by physical processes, such as impacts by sediment carried in flowing water.

How does weathering shape the coastline?

As well as wave energy, other geomorphological processes can modify the coastline. Chemical, mechanical and biological weathering loosen rocks, in advance of their removal by waves and mass movement also provides loose material. ... The process re-occurs repeatedly until the rock breaks apart.

What is slumping at the coast?

Slumping: involves a whole segment of the cliff moving down-slope along a saturated shear-plane. Soil Creep: the slowest of downhill movements, occurring on very gentle and well-vegetated slopes. Although material may move by less than 1 cm a year, its results can be seen in step-like terracettes on hillsides.

What landforms create weathering?

Terms in this set (7)

• Canyons. Formed from weathering and erosion by water.
• U-Shaped Valleys. Formed from weathering and erosion by ice.
• Sandstone Arch. Formed from weathering and erosion by wind.
• Sea Arches and Stacks. Formed from weathering and erosion by water (waves).
• Delta. ...
• Moraine/glacial lake. ...
• Cave/Sink Hole.

Is a slump a type of landslide?

Types of Landslides and Associated Processes. Landslide is a general term used for a variety of landscape processes including slumps, rockfalls, avalanches, debris flows, mudflows, and lahars.

Is a slump the same as a landslide?

Landslides involve rock and debris moving downslope along a planar surface, whereas slumping usually occurs along a curved interface and as a single large unit.

Is slump a landslide?

A landslide is the downhill movement of masses of soil and rock by gravity. ... Block slides and slumps occur where blocks or masses of intact soil or rock move downslope along a failure surface.