Earthquakes Along the Fault
The map shows the location of all earthquakes of magnitude 1.5 and larger
in the California-Nevada region during 1980. Literally thousands of small earthquakes
occur in California
each year, providing scientists with clear indications of places
where faults cut the Earth's crust.
Earthquakes of magnitude 1.5 and larger recorded in 1980 on the San
Andreas and other large faults in California and Nevada
(data compiled by Jerry P. Eaton, USGS, and others)
The largest historical
earthquakes that occurred along the San Andreas fault were those
in 1857 and 1906 (see map).