Slip rate, earthquake recurrence, and seismogenic potential of the Rodgers Creek Fault Zone, northern California: Initial results

Karin E. Budding; David P. Schwartz; David H. Oppenheimer

doi:10.1029/91gl00465

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Slip rate, earthquake recurrence, and seismogenic potential of the Rodgers Creek Fault Zone, northern California: Initial results

Karin E. Budding·David P. Schwartz·David H. Oppenheimer

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Abstract

Instrumental seismicity defines a seismic gap along the Rodgers Creek fault zone (RCFZ) between Santa Rosa and San Pablo Bay. Results of a paleoseismicity study within the gap, using offset channels in late Holocene alluvial deposits as piercing points, indicate a minimum slip rate of 2.1 to 5.8 mm/yr for the past 1300 years, a preferred range for the maximum recurrence interval of 248 to 679 years, and a surface offset of 2 +0.3, −0.2 m during the most recent event. The RCFZ has produced past M7 earthquakes, and historical seismicity data indicate a minimum elapsed time of 182 years since the most recent earthquake of this size.

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Source-reported bounding extent: 38.053878971224805° to 38.80232759324389° latitude; -123.02346838200202° to -121.90527996846316° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Karin E. Budding, David P. Schwartz, David H. Oppenheimer. 2012-12-07. Slip rate, earthquake recurrence, and seismogenic potential of the Rodgers Creek Fault Zone, northern California: Initial results. https://doi.org/10.1029/91gl00465

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