Question

Normal faults occur from _____ stress and reverse faults occur from _____ stress.

Answer 1

Normal faults occur from tension stress

Reverse faults occur from shear stress

Answer 2

Normal faults occur from negative stress

Reverse faults occur from positive stress

Step-by-step explanation:

Normal fault - also called distensive fault - occurs when the displaced block is positioned below the fault plane. The displaced block “descends” relative to the original plane, which is caused by the negative stress caused by the internal forces transforming the relief.

Reverse failure - also called compressive failure - manifests in the opposite way to the normal failure type, with the displaced block moving above the original plane. It occurs when tectonism exerts positive pressures on the rock block in question.