The San Francisco Earthquake and Fire of April 18">
The San Francisco Earthquake and Fire of April 18, 1906, Use back bar to return or select Index Fence parted by earthquake fault, Marin County: The fault
trace or fracture accompanying the earthquake is inconspicuous, although the
horizontal displacement is considerable.
and their effects on structures and structural materials.
(USGS report, 1907)
photograph by G. K. Gilbert