Relationship between mass wasting and weathering erosion

relationship between mass wasting and weathering erosion

Weathering and erosion break down surface structures. Deposition builds them up. Mass wasting is the downslope movement of rock, soil, or other materials due to gravity. Mass wasting can occur very rapidly or very slowly. this presentation is all about weathering, erosion, & mass wasting. this may AGENTS OF WEATHERING:change of the environment

If you run your hands through it, it feels very soft.

Mass Wasting (Mass Movement)

You could squish it through your fingers! This happens because the water has found its way between all the particles in the soil. The soil becomes almost likealiquid! This same thing happens often in nature.

Mass Wasting (Mass Movement) - Weathering and Erosion - Geology for Kids

A slope will weaken if it absorbs too much water, such as when a storm passes over a mountain. The more water the slope absorbs, the weaker it gets. Eventually, loose material will fall down the slope.

This slope collapsed after a heavy rain. Vegetation plays a big role in stabilizing slopes.

relationship between mass wasting and weathering erosion

The strong root systems of trees and other plants help hold the soil in place. When these trees are removed, the soil becomes weak.

Mass wasting

This is why deforested areas are likely to be sites of mass wasting. Types of Mass Wasting Events A creep occurs when the material on a slope moves very slowly.

Soil and rocks will inch their way down a slope due to the force of gravity. A slide is when a mass of sediment sticks together and moves down a slope.

relationship between mass wasting and weathering erosion

The steeper the slope, the faster the creep. The creep makes trees and shrubs curve to maintain their perpendicularity, and they can trigger landslides if they lose their root footing.

relationship between mass wasting and weathering erosion

The surface soil can migrate under the influence of cycles of freezing and thawing, or hot and cold temperatures, inching its way towards the bottom of the slope forming terracettes. Landslides[ edit ] A landslidealso called a landslip, is a slow or rapid movement of a large mass of earth and rocks down a hill or a mountainside.

Little or no flowage of the materials occurs on a given slope until heavy rain and resultant lubrication by the same rainwater facilitate the movement of the materials, causing a landslide to occur. In particular, if the main feature of the movement is a slide along a planar or curved surface, the landslide is termed slump, earth slide, debris slide or rock slide, depending on the prevailing material.

Movement of soil and regolith that more resembles fluid behavior is called a flow. These include avalanchesmudflowsdebris flowsearth flowlahars and sturzstroms. Water, air and ice are often involved in enabling fluid-like motion of the material.

Mass wasting - Wikipedia

A fall, including rockfall and debris fall, occurs where regolith cascades down a slope, but is not of sufficient volume or viscosity to behave as a flow. Falls are promoted in rocks which are characterized by the presence of vertical cracks.

Falls can also result from undercutting by running water as well as by waves.

relationship between mass wasting and weathering erosion

They usually occur at very steep slopes such as a cliff face. The rock material may be loosened by earthquakes, rain, plant-root wedging, and expanding ice, among other things.