John Huntsman, associate professor of geology at the University of North Carolina Wilmington, thinks that area might be what geologists call a “terrace deposit” — remains of a former beach.
In other words, those hills or ridges might mark where sea level was, back a few thousand to 60,000 years ago, when the Atlantic Ocean covered more of eastern North Carolina than it does today.
As hills go, of course, the area around Greenfield Lake isn’t very high. Topographical maps show the highest elevation in that area is only about 23 feet (7 meters). According to surveys done by N.C. State University in Raleigh, the highest point in New Hanover County is only about 75 feet above sea level.
Date posted: November 10, 2010
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