Earthquake Glossary - active fault

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  • active fault

    A fault that is likely to have another earthquake sometime in the future. Faults are commonly considered to be active if they have moved one or more times in the last 10,000 years.


    active fault

    The Emerson fault, one of the segments that ruptured in the M7.2 1992 Landers, Calfornia earthquake. (Photo by Kerry Sieh, Caltech)