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USGS scientists collected core samples along Hayward fault

By Coastal and Marine Hazards and Resources Program 2017 (approx.)
L, woman stands on ships deck next to plastic tubes of sediment with red caps; R, view of cores being collected at ship back
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Detailed Description

On the shallow-draft barge Retriever (right), USGS scientists led by Janet Watt (left) collected core samples of underwater sediment along the Hayward-Rodgers Creek fault zone in San Pablo Bay, California, to investigate the history of faulting beneath the bay.

Sources/Usage

Public Domain.