Figure 26. Seismic reflection profile over Nearshore Ramp, Old Orchard Beach, Saco Bay (modified from Barber, 1995). (a) Original seismic record; (b) interpretation of the seismic record in which br is bedrock, Pgm is glacial-marine sediment, He is estuarine sediment and Hs is sand on the present seafloor; (c) vibracore through sand over estuarine mud resting on glacial-marine mud. Radiocarbon dates on shells and plants are shown.

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Last updated on October 6, 2005

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