All clips show the deck of a barge in San Pablo Bay, California.
Coring the Hayward-Rodgers Creek fault zone in San Pablo Bay, California, to unravel the history of faulting beneath the bay
By Pacific Coastal and Marine Science Center
October 24, 2016
News from USGS Pacific Coastal and Marine Science Center
From October 17-21, 2016, USGS scientists collected 20 core samples of bayfloor sediment along the Hayward-Rodgers Creek fault zone in San Pablo Bay, a northern extension of San Francisco Bay, California. The longest core measures nearly 4 meters. Detailed radiocarbon dating of benthic forams (one-celled microorganisms) in the core samples will aid in unraveling the history of faulting in the bay and constraining the age of the most recent surface-rupturing earthquake along this part of the fault zone. Recent high-resolution acoustic imaging revealed a direct link between the Hayward and Rodgers Creek faults and provided a framework for targeted sampling of offset sediment layers, unconformities, and peculiar gas pockets.
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B-roll Sampling and Coring in San Pablo Bay
All clips show the deck of a barge in San Pablo Bay, California.
Related
Offshore Faults along Central and Northern California
From Point Conception to Cape Mendocino, seafloor faults have been, in the past, mapped in varying ways and without enough detail to assess their earthquake potential. To provide this important information, USGS uses advanced technology to image offshore faults that could trigger devastating earthquakes near densely populated areas and a nuclear power plant.
B-roll Sampling and Coring in San Pablo Bay
All clips show the deck of a barge in San Pablo Bay, California.
All clips show the deck of a barge in San Pablo Bay, California.
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