Types of Faults.

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Presentation transcript:

Types of Faults

Forces TENSION SHEAR COMPRESSION

Normal Fault Force: TENSION The exposed land can form a cliff or mountains The hanging wall moves downward and the footwall moves upward

The Teton Mountains were created by Normal Faulting.

Reverse Fault these fault blocks are moving towards each other. Force: COMPRESSION Hanging wall moves up and the footwall moves down.

Reverse Fault in marble - Jazida do Urubu, Brazil

Strike-Slip Fault Blocks slide past each other – usually in a horizontal motion San Andreas fault is an example FORCE: SHEAR

Thrust Fault One fault block is thrust over the other Can create plateaus and mountains Force: COMPRESSION

The Lewis Thrusts in southern California Notice how deformed the rocks under the thrusted block have become!