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USGS Earthquake Faults and Alquist-Priolo Fault Zones.

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Originator: Charles Real <>
Geospatial_Data_Presentation_Form: gis-service
Geospatial_Data_Presentation_Form: liveDataAndMaps
Geospatial_Data_Presentation_Form: gis-service
Publication_Date: 20090101
Title: USGS Earthquake Faults and Alquist-Priolo Fault Zones.
A map of earthquake faults and zones in California. EARTHQUAKE FAULT ZONE OF REQUIRED INVESTIGATION These zones are delineated to assist cities and counties in fulfilling their responsibilities for protecting the public safety from the effects of earthquake fault rupture as required by the Alquist-Priolo Earthquake Fault Zoning Act (Public Resources Code Sections 2623 et seq). For a general description of the Alquist-Priolo Earthquake Fault Zoning Act and regulations, downloadable official zones and related information, please refer to the California Geological Survey Website at (<>) FAULT TRACES Fault trace features are from the California Geological Survey 2010 Fault Map of California and show the location of the ground surface trace of faults that are categorized by age for the past 1.6 million years (previously-defined Quaternary Period). Users of this information should be aware that active faults and earthquakes are the subject of continuing research and that refinement of the interpretations given here are sure to come within a few years. California Geological Survey Bulletin 201, “An Explanatory Text to Accompany the Geologic Map of California,” published separately, contains detailed source index maps and references to all the published and unpublished reports and information used in compiling the 1975 Fault Map of California. For additional information about the 2010 version of this map go to the following (<>)
LIMITATIONS 1)This site is not designed for official natural hazards disclosure determination. “Official” natural hazard zones viewed on this site are of insufficient resolution to definitively determine in all cases whether an individual property lies within a earthquake fault zone for disclosure purposes pursuant to California Civil Code Section 1103 et seq. 2)This map may not show all potentially active faults, either within the earthquake fault zones or outside their boundaries. 3)Faults shown within earthquake fault zones are the basis for establishing the zone boundaries. 4)The identification of faults and the location of fault traces are based on based on available data at various scales of accuracy, and have not been field checked. Overlay of zones on other base maps can result in discordance with base map features. 5)DISCLAIMER: The State of California and the Department of Conservation make no representations or warranties regarding the accuracy of these zones or fault traces, or the data from which these zones and fault traces were derived. Neither the State nor the Department shall be liable under any circumstances for any direct, indirect, special, incidental or consequential damages with respect to any claim by any user or any third party on account of or arising from the use of this information.
Purpose: None Stated
Beginning_Date: unknown
Ending_Date: unknown
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
West_Bounding_Coordinate: -124.594
East_Bounding_Coordinate: -113.438
North_Bounding_Coordinate: 42.226
South_Bounding_Coordinate: 32.400
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword_Thesaurus: none
Theme_Keyword: Geoscientific
Theme_Keyword: Boundaries
Theme_Keyword: Planning & Cadastre Planning & Development
Theme_Keyword: earthquake faults
Theme_Keyword: fault zones


Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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