Mass wasting is the geomorphic process where soil, sand, and rock move downwards. This movement is mostly caused by gravity, but is frequently affected by water. The different types of mast wasting are called creeps, slides, flows. topples, and falls.Gravity pulls rock and debris down the slope of a mountain, but at the same time the restive forces from the mountain pull back against gravity. This process moves the debris down the side of the mountain.
Mass wasting is a type of erosion. They can happen quickly, or over a long period of time. People might of them as a landslide.
Types of Mass Wasting:
1. Creep: The slow movement of soil and rock downhill over time.
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| The result from the creep movement. |
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| Diagram of how the slide movement works. |
3. Flows: Occur when the material move more like liquid.
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| Diagram of the debris flow. |
4. Topples: The forward rotation and movement of a mass of rock out of a slope.
5. Falls: When rocks and other sediments fall through the air and land at the bottom of the slope.
To get a better understanding about the types of mass wasting and how they work, click here: https://youtu.be/WyGw1pk9YWo
Diagram of how the fall movement would look.
Preventing Mass Wasting:
To eliminate the possible for mass wasting, we can try to make sure our construction projects have the proper design. We can remove vegetation, add weight to the upper parts of the slopes, and build retaining walls and drainage pipes to reduce to steepness of the cuts.
Significant Events
In 1970, an earthquake triggered an avalanche in the Peruvian Andes. It started from the barren area at the near the top of the peak. The rock avalanche filled the bottom with rock and debris up to 300ft.
The picture to the left shows the highest peak in the Peruvian Andes. Some of the rocks continued moving into streams and into a ridge that was over 1,000 ft high. It buried 2 villages leaving over 20,000 people dead.
Rock avalanche pathways along the San View down an avalanche pathway in the
Gabriel Mountains of Southern California Gabriel Mountains of Southern California
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| Tilted rock means "topple failure" |
To get a better understanding about the types of mass wasting and how they work, click here: https://youtu.be/WyGw1pk9YWo
Diagram of how the fall movement would look.
Preventing Mass Wasting:
To eliminate the possible for mass wasting, we can try to make sure our construction projects have the proper design. We can remove vegetation, add weight to the upper parts of the slopes, and build retaining walls and drainage pipes to reduce to steepness of the cuts.
Significant Events
In 1970, an earthquake triggered an avalanche in the Peruvian Andes. It started from the barren area at the near the top of the peak. The rock avalanche filled the bottom with rock and debris up to 300ft.
The picture to the left shows the highest peak in the Peruvian Andes. Some of the rocks continued moving into streams and into a ridge that was over 1,000 ft high. It buried 2 villages leaving over 20,000 people dead. |
A large rock avalanche pathway and deposit in southern Alaska. |
Rock avalanche pathways along the San View down an avalanche pathway in the
Gabriel Mountains of Southern California Gabriel Mountains of Southern California
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