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| Figure 2. Onlap-offlap history of the Atlantic Coastal Plain, based on onshore outcrop and subsurface data. Sea-level fluctuations in the Salisbury, Albemarle, and Charleston embayments are plotted against a chart of cycles and supercycles by Vail and Mitchum (1979). Data from the basins are combined to approximate global sea-level events as seen along the Atlantic Coastal margin. The marine climate curve represents conditions in the Salisbury embayment and is based on data from fossil molluscan assemblages. |