Types of weathering
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Transcript of Types of weathering
Organic Activity
This occurs when burrowing animals, humans, or plants interfere and work their way into rocks.
Chemical Weathering
• Hydrolysis
• Oxidation
• Dissolution
• Acid – Carbonation– Precipitation– Plant Acid
Hydrolysis
When rocks sit in water for extended periods of time they begin to break down and have a clay-like texture.
Dissolution
Rocks, when in water, react with acids in the water and dissolve. A clue that this has happened to a rock is the presence of small holes.
Acid 1
• Carbonation- water absorbs carbon dioxide when rain falls or from decaying organic material. The carbon dioxide dissolved in water forms carbonic acid that reacts with many common minerals.
Acid 2
• Precipitation- Water in the atmosphere absorbs sulfur oxides and nitrogen oxides. Through a series of chemical reactions these pollutants are converted into acids that are a cause of acid precipitation.