GEOLOGY

EARTH SCIENCE

EARTHQUAKES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A normal fault occurs at what type of plate boundary?
A
convergent
B
divergent
C
transform
D
none of these
Explanation: 

Detailed explanation-1: -Normal faults are often found along divergent plate boundaries, such as under the ocean where new crust is forming. Long, deep valleys can also be the result of normal faulting.

Detailed explanation-2: -Reverse faults occur at convergent plate boundaries, while normal faults occur at divergent plate boundaries.

Detailed explanation-3: -No, a normal fault is not a convergent boundary. In areas where the Earth’s crust is being compressed normal faults are rare as they tend to occur where the Earth’s crust is being stretched. It is more common to find a reverse-fault near a convergent boundary.

Detailed explanation-4: -A normal fault forms as a result of tensional stress, which occurs when two blocks of rock move away from one another. These types of faults form along divergent boundaries, which are boundaries where two tectonic plates separate from one another such as those found at seafloor ridges.

Detailed explanation-5: -Convergent plate boundaries are dominated by compression. The major faults found in convergent plate boundaries are usually reverse or thrust faults, including a master thrust fault at the boundary between the two plates and typically several more major thrust faults running roughly parallel to the plate boundary.

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