San Andreas Fault The fault, right, and the Carrizo Plain, left Arrows show relative motion of the two plates Named by Andrew Lawson Year defined 1895 Country United States State California Cities San Francisco Characteristics Segments Calaveras, Hayward, Elsinore, Imperial, Laguna Salada, San Jacinto Length 1,200 km (750 mi) Displacement 20 -- 35 mm (0.79 -- 1.38 in) / yr Tectonics Plate North American & Pacific Status Active Earthquakes 1857, 1906 (M ~ 7.8), 1957 (M 5.7), 1989 (M ~ 6.9), 2004 Type Transform fault Movement Dextral Age Neogene - Holocene Orogeny Gorda - California - Nevada
what type of plate boundary is the san andrea's fault
Transform fault