Forces in Earths Crust Flashcards
Normal Fault
Hanging wall moving downwards
Foot wall moving upwards
What kind of stress pulls apart Normal Faults
Tension
What do 2 parallel Normal Faults form
Fault block mountains
hot are Fault block mountains made?
2 Normal Faults leave an elevated area between them
How many footwalls do Fault Block Mountains have?
1
Where are Fault Block Mountains found?
The Great Basin
Reverse Fault
Hanging wall moves upwards
Foot wall moves downwards
What kind of stress make Fault block Mountains?
Tension
What kind of stress makes reverse Faults
Compression (Convergence)
Thrust Fault
A special type of reverse fault where the fault is less than 45 degrees, but otherwise same every other way
Rift Valley
2 normal faults leaving an open area between them as they are pushed outward
How may foot walls and hanging walls are there in a rift valley?
2 foot walls
1 hanging walll
Strike-slip vault
Caused by shearing
Very little up and down movement