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National Geologic Map Database

Geologic Unit: Tar Springs

Usage:

Tar Springs Formation (IL,IN*,KY*,MO)
Tar Springs Formation of Buffalo Wallow Group (IN)
Tar Springs Sandstone (IL,IN,KY*,MO)
Tar Springs Sandstone of Pope Group (IL)
Tar Springs Sandstone Member of Leitchfield Formation (KY*)


Subunits:

Tick Ridge Sandstone Member (IN).


Geologic age:

Late Mississippian (Serpukhovian; late Chesterian)*


Type section, locality, area and/or origin of name:

Named from Tar Springs, 3 mi south of Cloverport, Brechinridge Co., KY (Owen, 1857).


AAPG geologic province:

Illinois basin*
Ozark uplift


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).