The Cause Of The 1906 San Francisco Earthquake

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1906 San Francisco Earthquake
Rachel Ziffer
3rd period

At 5:12 a.m. on April 18, 1906, the people of San Francisco were awakened by an earthquake that would devastate the city. The earthquake was caused by a rupture of the northernmost 296 miles of the San Andreas Fault, leaving 225,000 homeless, 3,000 dead and 500 city blocks gone.
This photograph, taken by George Lawrence from a series of kites five weeks after the great earthquake of April 18, 1906, shows the devastation brought on the city of San Francisco by the quake and subsequent fire.

The San Andreas Fault marks the place where the Pacific Plate and the North American Plate collide, forming a transform boundary. The earthquake occurred when the two plates collided. Pressure built up over time. Then, suddenly, the plates slipped and moved very fast. There’s no way to tell when this could happen. No one in San Francisco was expecting a disaster as great as this.
The diagram below shows the …show more content…

City officials of the time estimated the death toll around 700, but more modern calculations say the casualties were more around 3,000 deaths. City figures may have been downplaying the disaster, wanting to rebuild the city quickly. Almost 30,000 buildings and houses and 500 city blocks were destroyed. The government gave money to rebuild buildings that were destroyed by the fire and earthquake, but the earthquake did not lead to any better building codes and the city is still at risk if another earthquake hits. "There are still thousands of hastily rebuilt, unreinforced masonry buildings cheek-by-jowl with wooden structures with no fire-resistant walls between them," reported the San Francisco Chronicle in April 2006. One study by the Association of Bay Area Governments predicts that a magnitude 7.3 quake along the San Andreas Fault near San Francisco would seriously damage 66,000 homes and forced nearly a quarter of a million people into the

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