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Callan Bentley

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Callan Bentley teaches geology at Northern Virginia Community College and is a contributing editor to EARTH Magazine. He is a GSA Fellow and the president of the two-year-college division of the National Association of Geoscience Teachers.

Geoscience

Travels in Geology: Touring the Capital Geology of Washington, D.C.

The nation's political center is also home to a rich geological history, found in both natural rock outcrops and the diverse suite of evocative building stones and monuments.

May 30, 2019