Usage:
Glen Dean Limestone (IL*,KY*,MO,TN*)
Glen Dean Formation (IL,IN,KY*,TN)
Glen Dean Limestone of Okaw Group (IL)
Glen Dean Formation of Okaw Group (IL)
Glen Dean Limestone of Stephensport Group (IN)
Glen Dean Formation of Stephensport Group (IN)
Glen Dean Limestone of Pope Group (IL)
Geologic age:
Middle Mississippian (late Visean; Chesterian)*
Type section, locality, area and/or origin of name:
Named from exposures along railroad on both sides of Glen Dean, Brechinridge Co., KY (Butts, 1917).
AAPG geologic province:
Illinois basin*
Ozark uplift
Cincinnati arch*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).