<Table> <Tr> <Th_colspan="2"> San Andreas Fault </Th> </Tr> <Tr> <Td_colspan="2"> The fault, right, and the Carrizo Plain, left </Td> </Tr> <Tr> <Td_colspan="2"> Arrows show relative motion of the two plates </Td> </Tr> <Tr> <Th> Named by </Th> <Td> Andrew Lawson </Td> </Tr> <Tr> <Th> Year defined </Th> <Td> 1895 </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> State </Th> <Td> California </Td> </Tr> <Tr> <Th> Cities </Th> <Td> San Francisco </Td> </Tr> <Tr> <Th_colspan="2"> Characteristics </Th> </Tr> <Tr> <Th> Segments </Th> <Td> Calaveras, Hayward, Elsinore, Imperial, Laguna Salada, San Jacinto </Td> </Tr> <Tr> <Th> Length </Th> <Td> 1,200 km (750 mi) </Td> </Tr> <Tr> <Th> Displacement </Th> <Td> 20--35 mm (0.79--1.38 in) / yr </Td> </Tr> <Tr> <Th_colspan="2"> Tectonics </Th> </Tr> <Tr> <Th> Plate </Th> <Td> North American & Pacific </Td> </Tr> <Tr> <Th> Status </Th> <Td> Active </Td> </Tr> <Tr> <Th> Earthquakes </Th> <Td> 1857, 1906 (M ~ 7.8), 1957 (M 5.7), 1989 (M ~ 6.9), 2004 </Td> </Tr> <Tr> <Th> Type </Th> <Td> Transform fault </Td> </Tr> <Tr> <Th> Movement </Th> <Td> Dextral </Td> </Tr> <Tr> <Th> Age </Th> <Td> Neogene - Holocene </Td> </Tr> <Tr> <Th> Orogeny </Th> <Td> Gorda - California - Nevada </Td> </Tr> </Table> <Tr> <Th_colspan="2"> San Andreas Fault </Th> </Tr>

What type of plate boundary is the san andrea's fault