Question

What causes fault block mountains to form? What

causes valleys to form?
Mountains: when two normal faults pull away due to
tension leaving a block of rock.
Valley: when a reverse fault due to tension pull away
causing a block of rock to sink.
Mountains: when two plates slide past each other
Valley: when two plates collide into each other
Mountains: when two reverse faults pull away due to
compression
Valley: when two reverse faults push together due to
compression

Answer 1

Fault block mountains are formed when two normal faults separate, while valleys are formed when a reverse fault causes a block of rock to sink.

Step-by-step explanation:

Fault block mountains are formed when two normal faults pull away from each other due to tension, leaving a block of rock. This creates a mountain range with steep, uplifted blocks and relatively flat valleys. On the other hand, valleys are formed when a reverse fault due to tension pulls away, causing a block of rock to sink. This creates a depression between two uplifted blocks.

For example, the Sierra Nevada mountain range in California is a fault block mountain range. The normal faulting along the eastern edge of the range has uplifted the Sierra Nevada, while the valleys like the Central Valley have subsided between the faults.

Learn more about Formation of fault block mountains and valleys