THE GREAT SAN FRANCISCO EARTHQUAKE OF 1906

WHAT HAPPENS IN AN EARTHQUAKE

• Transform fault boundaries occur when two plates grind past each other.

EARTHQUAKE OF 1906

• Located in San Francisco California
• The earthquake left over 200,000 people homeless.
• The death toll is unknown
• Some people think over 3,000 died in the quake.
• Another 500 looters were shot by police, and even greater damage was caused by the fire

WHICH PLATES WERE AT WORK

• The Pacific plate and the North American plate

WHAT CAUSES THIS PLATE MOTION

• Convection currents in the mantle provide the basic driving forces for plate motions