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6 Science WYNTK – Forces in Earth’s Crust
Stress:
Types of Stress
Three types of stress can occur in the crust Tension, compression and shearing work over
But if you could speed up time so a billion years passed by in minutes,
Tension:
The effect of tension on rock is somewhat like
Compression:
One plate pushing against another can
Shearing:
Shearing can cause rock to
Kinds of Faults
Recall that a fault is
Most faults occur along
There are three main types of faults:
Normal faults:
In a normal fault, the fault is at an
Hanging wall:
Footwall:
When movement occurs along a normal fault, the
Reverse fault:
The rock forming the hanging wall of a reverse fault slides
Strike-slip fault:
A strike-slip fault that forms the boundary between
The San Andreas fault in California is an
Changing Earth’s Surface
Over millions of years, the forces of plate movement can change a flat plain into
Folds are bends in that form
Anticline:
Syncline:
Anticlines and synclines are found in many
When two normal faults cut through a
When two of these normal faults form parallel to
Plateau:
Forces deforming the crust uplifted the