The San Andreas Fault is a continental transform fault that runs a length of roughly 810 miles (1,300 km) through California in the United States. The fault's motion is right-lateral strike-slip (horizontal motion). It forms the tectonic boundary between the Pacific Plate and the North American Plate.
The fault was first identified in Northern California by the UC Berkeley geology professor Andrew Lawson in 1895 and named by him after a small lake which lies in a linear valley formed by the fault just south of San Francisco, the Laguna de San Andreas. After the 1906 San Francisco Earthquake, Lawson also discovered that the San Andreas Fault stretched southward into southern California. Large-scale (hundreds of miles) lateral movement along the fault was first proposed in a 1953 paper by geologists Mason Hill and Thomas Dibblee.
Read more about San Andreas Fault: Evolution, Plate Movement, Notable Earthquakes, The Next One
Famous quotes containing the words san and/or fault:
“It is an odd thing, but every one who disappears is said to be seen at San Francisco. It must be a delightful city, and possess all the attractions of the next world.”
—Oscar Wilde (1854–1900)
“Jaques. The worst fault you have is to be in love.
Orlando. ‘Tis a fault I will not change for your best
virtue.”
—William Shakespeare (1564–1616)