Understanding Normal Faults

What is the primary condition under which normal faults are formed?

• Compression of rocks

• Extension of rocks

• Shearing of rocks

• Folding of rocks

In a normal fault, what is the term used for the block that moves downward?

• Hanging wall

• Base block

• Foot wall

• Thrust block

What angle is typically formed by the displacement of layers in a normal fault?

• 90 degrees

• 45 degrees

• 30 degrees

• 60 degrees

In the context of normal faults, what role does gravity play?

• It causes the hanging wall to move upward.

• It compresses the rock layers.

• It has no effect on fault movement.

• It forces the hanging wall downward.

What is observed in a quarry face that indicates the presence of multiple normal faults?

• Uniform rock layers

• Multiple blocks sliding past each other

• No visible fault lines

• Only one large fault