EROSION
Erosion is a natural process where rocks disintegrate over time. This article covers various types of erosion, including mass wasting, mechanical, and chemical erosion. It also discusses different processes of erosion, such as running water erosion, glacier erosion, wind erosion, and gravity-induced landslides. Learn about the impacts of erosion on landscapes and environments.
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Presentation Transcript
What is Erosion ? Process from which a rock disintegrates or breaks down Example when bigger rocks break into smaller rocks. It is also part of the weathering process !!!
Types of Erosion Can be classified as Mass Wasting. Mechanical similar to breaking a rock with a hammer Chemical similar to pouring acid on a rock to dissolve it. Example: Hydrochloric acid with limestone, limestone will start to erode away.
Process of Erosion https://www.slideshare.net/sherylwil/5-soil- erosion
Types of Erosion Running water ( Rivers, Streams etc.) Near Shore waves Ice Wind Gravity ( Land Slides)
Running Water Erosion http://www.scienceclarified.com/El- Ex/Erosion.html
Glacier or Ice https://opentextbc.ca/physicalgeologyearle/w p-content/uploads/sites/145/2016/03/aletsch- 2.png
3-D View of Glaciers https://opentextbc.ca/geology/wp- content/uploads/sites/110/2015/07/alpine- glaciation-erosion.png
Wind Erosion Also referred as Eolian http://www.scienceclarified.com/El- Ex/Erosion.html
Gravity Also referred as Landslides. Very Important. Gravity based erosion occurs mainly on mountainous regions such as the Northwest United States and the Rockies but are not restricted to these areas. States such as California, Colorado, Montana, Oregon and Washington State.
Gravity What is a landslide ? A sliding down of mass of earth or rock from a mountain or cliffs.
Gravity Types of Landsides 1. Fall 2. Topple 3. Flow 4. Slide 5. Spread
Landslide Types https://pubs.usgs.gov/fs/2004/3072/images/Fi g3grouping-2LG.jpg
Who analysis and make notes of these types of phenomena and bring solutions to prevention of erosion ? Geologists and Geotechnical Engineers
How do you prevent Erosion ? Place rip-rap around the banks of rivers or channels Retaining Walls Gabbion baskets Jetties in coastal areas. Other engineering methods (complex problems)
Important Websites www.usgs.gov https://winderosionnetwork.org/ http://www.ga.gov.au/scientific- topics/hazards/landslide/basics/what http://www.scienceclarified.com/El- Ex/Erosion.html
