Description: A map of the Blue Ridge, Catoctin Mountain and Bull Run Mountain in Virginia. Blank areas represent Tertiary peneplain; shaded areas represent remnants of Cretaceous peneplain now appearing as residuals above the Tertiary level.
Source: Isaiah Bowman, Ph. D, Forest Physiography (New York, NY: John Wiley and Sons, 1911) 621
Map Credit: The Private Collection of Roy Winkelman |
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