The following diagrams show structures of deformation - Leaving Cert Geography - Question 20 - 2006
Question 20
The following diagrams show structures of deformation.
In your answer-book, match each of the structures below with the correct label A to D in the diagrams above:
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Worked Solution & Example Answer:The following diagrams show structures of deformation - Leaving Cert Geography - Question 20 - 2006
Step 1
Normal fault
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Answer
Label A represents a normal fault, characterized by the hanging wall moving down relative to the footwall due to extensional forces.
Step 2
Reverse or thrust fault
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Answer
Label D corresponds to a reverse or thrust fault, where the hanging wall moves up relative to the footwall, resulting from compressional forces.
Step 3
Doming
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Answer
Label C illustrates doming, where layers of rock are pushed upwards, creating a bulge typically associated with intrusions or tectonic uplift.
Step 4
Transverse or tear fault
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Answer
Label B depicts a transverse or tear fault, identified by lateral movements of rock masses, where the fault plane is primarily horizontal.
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