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National Geologic Map Database

Geologic Unit: Hartford

Usage:

Hartford Limestone Member of Topeka Limestone of Shawnee Group (KS*)
Hartford Limestone Member of Topeka Formation of Shawnee Group (IA*,MO*,NE*)


Geologic age:

Late Pennsylvanian (Virgilian)*


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

Type locality: where member passes under Neosho River at Hartford, [Coffey] Co., eastern KS (Condra, 1949).
Named from exposures at Hartford, Lyon Co., KS. Present in Lyon and Coffey Cos., KS (Kirk, 1896).


AAPG geologic province:

Forest City basin*
Nemaha anticline*


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 ([ ]).