Earthquake related hazards in California The Alquist-Priolo Earthquake Fault Zoning Act was signed into California law on
December 22, 1972 to mitigate the hazard of surface faulting to structures for human occupancy. It directs the State of California
Division of Mines and Geology (now known as the California Geological Survey) to compile detailed maps of the surface traces
of known active faults. These maps include both the best known location where faults cut the surface and a buffer zone around
the known trace(s). Earthquakes happen when two blocks of the Earth's crust move relative to one another. The place where
the blocks meet is called a fault, and faults tend to show up as relatively straight lines on maps. Any structure built directly
on top of the fault will be torn in two when the blocks move. It's not easy to build a building that can withstand this sort
of movement (often several feet in a matter of seconds), so it's best to avoid building directly on top of an active fault.
(See: Wikipedia http://en.wikipedia.org/wiki/Alquist_Priolo_Special_Studies_Zone_Act). IMPORTANT!: The liquefaction and earthquake
induced land slide data used for this map service are NOT statewide and are limited to select locations in the San Francisco
Bay Area and Southern California.Other sections: Spatial_Reference_Information:
Citation
Title Siesmic Hazards of California
publication Date
1900-01-01T12:00:00
presentationForm
mapDigital
cited responsible party
-
originator
organisation Name
California Dept. of Conservation - California Geological Survey
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard, version
FGDC-STD-001-1998 using the August 2011-REH version of the FGDC CSDGM to ISO 19115-2 transform modified and updatated by SMR
2018-05-26 to work with xslt v1.0; generates USGIN compatible ISO19139 XML. Most recent metadata content review date: indeterminate: