Climate and Denudation

Climate and Denudation processes

• Mountain building processes change climates but climate can also change relief

• Ice, water and wind are all elements in the denudation process– They corrode the land surface– They transport the weathered the material– They deposit that material elsewhere– This modifies the landscape

Denudation processes

• The main denudation processes are– Weathering– Mass movement– Erosion – Deposition

• Most active at high altitudes– Vegetation is unable to protect steep, ash covered

volcanic slopes from the weather

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• The work of wind• The work of running water• Running water and the TVC

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• How do river patterns in volcanic areas differ from those of non-volcanic areas?

• What do these patterns tell you of the interactions between the processes of volcanism and erosion by running water

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• What differences are there between drainage patterns on Ngauruhoe and Tongariro?

• Suggest a reason for the difference in terms of volcanic processes

All spatial patterns are the result of a process

• Spatial pattern– An arrangement of information in terms of

physical space• What have we talked about today that

suggests this?– Patterns of drainage suggest landform shape• The process of drainage creates spatial patterns

– Patterns of andesite volcanoes suggest faultlines• The process of volcanism creates the pattern of

faultlines