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USGS OFR 03-346
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Figure 2


The Pocomoke River drains a former barrier island-back bay complex. Sandy, quartz-rich barrier beach type deposits are to the east (ocean side) and organic-rich - fine sand to clayey silt estuarine/back bay deposits are to the west. The western divide is part of the old Delmarva Peninsula uplands adjacent to the Pleistocene coastal deposits. The barrier beach deposits are coarser and better drained than the finer grained bay deposits. Wind blown and sand dunes are distributed across the older deposits.

Higher resolution version of  Figure 2 (427 KB)
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