Abstract
Quartz grains from Pleistocene nearshore marine beach-dune and lagoonal-estuarine stratigraphic units in southeastern Virginia were studied with the transmission and scanning microscopes to determine if results of electron-microscopic studies correlate with independent field data. Relative ages of stratigraphic units were determined from the degree of etching and obliteration of mechanical features on quartz-grain surfaces. Superposed surface features indicated depositional histories and were used to determine maximum relative sea level along each shoreline. Shorelines with southward longshore drift were distinguished from those with northward longshore drift by the presence or absence of glacial surface features on quartz grains.
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