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TYPES OF WEATHERING!!!
- FREEZE-THAW!
- Step 1 - Water - eg from rainfall or melting
snow and ice - becomes trapped in a
crack or joint in the rock.
- Step 2 - If the air temperature drops
below freezing, the water will freeze
and expand by 9-10 per cent putting
pressure on the rock.
- Step 3 - The ice will melt
when the temperature rises
above freezing.
- Step 4 - If this process happens
repeatedly, the rock will weaken
and eventually shatter into
angular fragments.
- Step 5 - The fragments
may then be deposited
as scree at the foot of a
slope.
- This process is most effective
where the temperature
fluctuates around 0°C
- This process is most effective
where the temperature
fluctuates around 0°C
- Step 5 - The fragments
may then be deposited
as scree at the foot of a
slope.
- Step 4 - If this process happens
repeatedly, the rock will weaken
and eventually shatter into
angular fragments.
- Step 3 - The ice will melt
when the temperature rises
above freezing.
- Step 2 - If the air temperature drops
below freezing, the water will freeze
and expand by 9-10 per cent putting
pressure on the rock.
- Step 1 - Water - eg from rainfall or melting
snow and ice - becomes trapped in a
crack or joint in the rock.
- Onion Skin/ Exfoliation
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