Geologic Unit: Dillsboro
Dillsboro Formation (IN*)
Dillsboro Formation of Maquoketa Group (IN)
Type area: southwestern Dearborn Co. and east-central Ripley Co., in vicinity of Dillsboro, Dearborn Co., IN (Brown and Lineback, 1966).
Unit Name History:
Named (Brown and Lineback, 1966).
Assigned to Maquoketa Group (Gray, 1972).
Overview (Wahlman, 1992).
Age modified (Frey, 1995).
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Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.
"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().
Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).
U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
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Last modified: 15-Jan-2013