Tag Archives: San Andreas Fault

ARTICLE: THE SAN ANDREAS FAULT


The San Andreas Fault

Formed around 30 million years ago, California’s San Andreas Fault is a major zone of fractures in the Earth’s crust extending from San Francisco to San Diego. The fault causes several thousand earthquakes a year, but few are serious. It was first identified in northern California by geology professor Andrew Lawson in 1895. After the 1906 San Francisco quake, he discovered that the fault continues through southern California. What city along the fault regularly endures magnitude 6.0 temblors? More… Discuss