GEOLOGY

Detailed explanation-1: -Faults are cracks in the earth’s crust along which there is movement. These can be massive (the boundaries between the tectonic plates themselves) or very small. If tension builds up along a fault and then is suddenly released, the result is an earthquake.

Detailed explanation-2: -A joint is a fracture along which no movement has taken place. Tensional forces generally cause joints. A fault is a fracture or break in the rock along which movement has taken place.

Detailed explanation-3: -A fault is a fracture or zone of fractures between two blocks of rock. Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake-or may occur slowly, in the form of creep.

Detailed explanation-4: -There are three main types of fault which can cause earthquakes: normal, reverse (thrust) and strike-slip.

Detailed explanation-5: -A fault is formed in the Earth’s crust as a brittle response to stress. Generally, the movement of the tectonic plates provides the stress, and rocks at the surface break in response to this.