GEOLOGY
GEOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hanging wall moves up relative to thefootwall
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Hanging wall moves down relative to thefootwall
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Extensional deformation triggers faulting
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Both B
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Detailed explanation-1: -normal fault-a dip-slip fault in which the block above the fault has moved downward relative to the block below. This type of faulting occurs in response to extension and is often observed in the Western United States Basin and Range Province and along oceanic ridge systems.
Detailed explanation-2: -Normal, or Dip-slip, faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed a Reverse fault.
Detailed explanation-3: -There are three main types of fault which can cause earthquakes: normal, reverse (thrust) and strike-slip.
Detailed explanation-4: -Normal faults occur where two blocks of rock are pulled apart, as by tension. hanging wall has moved upward relative to the footwall. Reverse faults occur where two blocks of rock are forced together by compression.