10 October 2012
Posted by Callan
Each one is the size (and shape) of a nice sourdough boule – Because they were in a glass case, I couldn’t get a good sense of scale in the same focal plane.
Callan Bentley is an assistant professor of geology at Northern Virginia Community College in Annandale, Virginia. He is particularly interested in structural geology and the evolution of the Appalachian mountain belt. Callan draws cartoons and writes for EARTH magazine. He lives in the Fort Valley of Virginia.
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