San Francisco ... North American and Pacific tectonic plates had moved past each other by more than 15 feet — compared to an annual average of two inches. The earthquake is estimated to ...

San Francisco ... North American and Pacific tectonic plates had moved past each other by more than 15 feet — compared to an annual average of two inches. The earthquake is estimated to ...

Hamilton obtained the only good record of local strong ground motion from the great earthquake that devastated San Francisco that day. Astronomers at Lick Observatory ... who found the tracing in the ...

as 4.7-magnitude earthquake struck the region Wednesday night. The tremor came at around 6.34pm Pacific time, with an ...

Getty Images/iStockphoto A 2.8-magnitude earthquake shook the San Francisco Bay Area in California, the U.S. Geological Survey reported. The 4-mile deep quake hit about 2 miles west of Orinda near ...

Southern California is seismically active due to its location on tectonic plate boundaries ... California's most infamous quake remains the 1906 San Francisco earthquake, which triggered ...

A ceremony was held in downtown San Francisco early Friday morning to mark 119 years since much of the city was destroyed from the 1906 earthquake and fire that followed. In a ceremony that began ...

The US West Coast is the confluence of several of the Earth's tectonic plates, and tremors are ... to homes and infrastructure. The San Francisco earthquake of 1906, which also caused a tsunami ...