Weathering
- Created by: Holl van Driel
- Created on: 17-01-15 20:38
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- Weathering
- Mechanical
- Freeze-Thaw - water expands 9% when freezes to form ice
- Salt-crystal growth - as crystals grow they expert pressure
- Exfoliation - surface layers flake off
- wet/dry - expands when wet and contracts when dry
- granular disintegration - rock crystals expand and contract
- block disintegration - jointed rocks expand and contract
- Pressure-release - weight is taken off the rocks
- Biological
- by plants and animals involving both mechanical inputs, such as root growth and chemical impacts such as release of organic acids
- Chemical
- Oxidation - oxygen reacts with minerals like iron
- Carbonic Acid - rainwater is carbonic acid
- Hydrolysis
- Hydration
- Mechanical
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