Which of the following statements is false?

a. in a dip-slip fault, movement along the fault plane is vertical.
b. in a strike-slip fault, movement along the fault plane is horizontal.
c. in an oblique fault, there's both vertical and horizontal movement along the fault plane.
d. a thrust fault is a reverse fault with an extremely high dip (close to 90°).

A thrust fault is a reverse fault with an extremely high dip (close to 90°). This is the false statement.

Option D

Explanation:

Faults are the fracture or fracture zone occurring on the rocks. These fractures can travel through the rocks leading to massive destruction. So, depending upon the direction of their travel, the faults can be classified as normal, reverse and strike slip fault. Also, the angle of dip along the fault is one of the important criteria for determining the type of faults.

There is dip-slip fault which has its movement along the vertical fault plane while the strike slip fault will be in horizontal direction. Similarly, an oblique fault will be acting in both vertical and the horizontal direction. So, the fourth statement related to thrust fault is false as in reverse fault or thrust fault the dip will be shallow and not high.

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