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 Form 2 Geography Online Lessons on Internal Land Forming Processes

Lesson on Types of Faults

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Answer Text:
Types of Faults
Normal Faults
Type formed by tensional forces in which one block slides downwards in relation to the other.
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• Rocks are subjected to tensional forces
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• A normal fault develops
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• One block slides downwards.
Reverse Fault
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Type formed by compressional forces in which one block of land is pushed upwards in relation to the other.
• Rocks are subjected to compressional forces.
• A reverse fault develops.
• One block is pushed over the other.
Shear/Tear Fault
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Type formed by shear forces in which adjacent blocks of land slide past one another. If a shear fault occurs between continents it’s called a Transform fault e.g. San Andrean fault of California and great glen fault of Scotland.
Thrust Faults
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Type formed when very strong compressional forces cause almost horizontal faults to develop and one block of land is pushed over the other.
Anticlinal fault
Type formed when anticlines are compressed further and cracks form on the crest.


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