Usage:
Golconda Formation (GA*,IL*,KY*,MO,TN*)
Golconda Formation of Pope Group (IL)
Golconda Limestone (KY)
Golconda Limestone of Stephensport Group (IN)
Subunits:
(ascending): Beech Creek Limestone Member (IL*,IN*,KY*,MO) or Beech Creek Member (KY*), Big Clifty Sandstone Member (IL*,KY*) or Big Clifty Member (KY*), Fraileys Shale Member (IL*,KY*,MO), Haney Limestone Member (IL*,IN*,KY*,MO).
Geologic age:
Middle Mississippian (Visean; early Chesterian)*
Type section, locality, area and/or origin of name:
Named from Golconda, Pope Co., southeastern IL, just north of which the full thickness outcrops on the river bluff (Butts, 1917).
AAPG geologic province:
Appalachian basin*
Cincinnati arch*
Illinois basin*
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 ([ ]).