records show that the fault produced a 6.7 quake in april 1968 .
the san jacinto is part of the larger san andreas fault , the dividing line between the pacific and north american plates .
the san jacinto system is a 130 - mile strike - slip fault that stretches from imperial county through anza , ocotillo wells and borrego springs into riverside county and the san bernardino valley .
sdsu 's tom rockwell is one of the world 's foremost authorities on the san jacinto fault .
a magnitude 7.5 was generally accepted to be the largest earthquake that would like occur on the fault , " said tom rockwell , an sdsu seismologist and the study 's leader . "
rockwell has played a major role in revealing the path of the san jacinto and reconstructing its history .
could san andreas quake destroy the hoover dam uc san diego shoots stark aerial image of salton sea these crawls are part of an effort to archive pages as they are created and archive the pages that they refer to .
we have shown that the central and northern sections of the san jacinto fault appear to fail together at times , and that would be in the magnitude 7.6 to 7.7 range .