THE SAN-FRANCISCO EARTHQUAKE OF 1906

Though among the most famous earthquakes in modern times, San Francisc o (18 April 1906) has almost always been presented as nothing more tha n a great human disaster. While certainly that, we should regard it al so as having had unusual significance in the development of seismology . Because the full extent of the San Andreas fault was thereafter reco gnized, and the association between faulting and earthquakes confirmed , we may consider the San Francisco earthquake of 1906 to be the first in which modern understanding of seismic causality prevailed.