North America's Impact Structures:

Chesapeake Bay

        Location: Virginia, U.S.A.

        Latitude: N37 17'

        Longitude: W76 1'

        Age (Ma): 35.5 0.6

        Diameter (km): 85

        Exposed at surface: no

Cross section of the Chesapeake Bay structure provided by C. Wylie Poag, US Geological Survey.