california’s san andreas fault is a plate tectonics boundary.
california’s san andreas fault is a plate tectonics boundary.
california’s san andreas fault is which type of plate boundary?
plate tectonics
san andreas fault









































the san andreas fault is a continental transform fault that extends roughly through california. it forms the tectonic boundary between the pacific plate and the north american plate, and its motion is right-lateral strike-slip (horizontal). the fault divides into three segments, each with different characteristics and a different degree of earthquake risk. the slip rate along the fault ranges from /yr.
san andreas fault
the history of earthquake investigations in california has been largely focused on the san andreas fault system, due to its strong influence in the state as the boundary between the pacific plate and the north american plate; it is the most studied fault on earth. andrew lawson, a geologist from the university of california, berkeley, had named the fault after the san andreas lake (prior to the occurrence of the 1906 san francisco earthquake) and later led an investigation into that event. the san andreas fault ruptured for a length of during the 1906 shock, both to the north of san francisco and to the south in the santa cruz mountains region. several long term forecasts for a large shock along the san andreas fault in that area had been made public prior to 1989 (the event and its aftershocks occurred within a recognized seismic gap) but the earthquake that transpired was not what had been anticipated. the 1989 loma prieta event originated on an undiscovered oblique-slip reverse fault that is located adjacent to the san andreas fault.
1989 loma prieta earthquake