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Earthquake Fault Zones and Seismic Hazard Zones Hollywood 7.5 Minute Quadrangle
AP maps show the best known location of the surface trace of a fault at the time the map was published. When the exact location of a fault trace is not known, the AP map shows it's approximate location with dashes, dots, or a question mark where the location is unknown.
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The image above shows an example interpretation of an AP map.
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ALQUIST-PRIOLO (AP) FAULT ZONE MAP
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