No current usage.
(Rocks of †Abbott Formation of †McCormick Group (IL*) reallocated to Tradewater Formation of Raccoon Creek Group. See Tradewater.)
Early to Middle Pennsylvanian (Morrowan to Atokan)
Type locality: exposures along the Illinois Central RR, in secs. 5, 6, 7, 18, and 19, T. 11 S., R. 5 E., Harrisburg quadrangle, Pope Co., southeastern IL. Named from Abbott Station (Kosanke and others, 1960).
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 ([ ]).