Evidence for a Postglacial Low Relative Sea-Level Stand in the Drowned Delta of the Merrimack River, Western Gulf of Maine

A submerged delta of the Merrimack River, located offshore between Cape Ann, Massachusetts, and the New Hampshire border, indicates a postglacial low relative see-level stand of about −47 m. The low stand is inferred to date to 10,500 yr B.P., but a lack of age control makes this assignment uncertain. A curve based on a late Wisconsinan, high relative sea-level stand of +32m at 13,000 yr B.P., a low stand of −47m at 10,500 yr B.P., and younger radiocarbon dates related to sea-level rise indicates an early postglacial crustal rise of at least 5 m per century.

Delta · Geography · Physical geography · Radiocarbon dating · River delta · Sea level · Submarine pipeline · Geological formations and processes · Geology · Geology and Paleoclimatology Research · Marine and environmental studies · Oceanography · Paleontology

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  Open Access•Robert N Oldale, Steven M Colman et al.•Quaternary Research•1993

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  Open Access•David R Yesner, Nathan D Hamilton et al.•North American Archaeologist•1984

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• Rapid Postglacial Shoreline Changes in the Western Gulf of Maine and the Paleo-Indian Environment

  Open Access•Robert N Oldale•American Antiquity•1985

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