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caused by a sudden slip on a fault
earthquake
fracture or zone of fractures between two blocks of rock.
fault
“Occurs when the “hanging wall” moves down relative to the “foot wall”.
Normal Fault
“Occurs where the “hanging wall” moves up or is thrust over the “foot wall”.
Reverse Fault
A fault on which the two blocks slide past one another.
Strike - Slip Fault
Other term for reverse fault
Thrust
A force that holds the rocks together
Friction
causes the rocks to push or squeeze against one another.
Compression Stress
forces the rocks to pull apart
Tension Stress
happens when two plates rub against each other as they move in opposite directions.
Shear Stress
stress is applied to all sides of the crust
Confining Stress
type of stress causes the formation of mountains
Compression Stress
movement of a strike-slip fault
sideways
Give the three types of fault
normal fault, reverse fault, strike - slip fault
Four types of stresses
Compression, tension, shear, confining
point along the fault where movements first occur
Focus
