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New Geologic Maps Highlight Bay Area Earthquake Hazards
"The U.S. Geological Survey and the California Geological Survey announce [in February 2006] two new digital geologic maps of the densely populated section of the San Francisco Bay area. ... The first is a new map of the young geologic deposits in the low-lying sections of the Bay Area. ... The second of the maps shows the likelihood that these young deposits will liquefy [during an earthquake.]" Maps are available as PDF documents.
http://earthquake.usgs.gov/regional/nca/qmap/

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