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National Geologic Map Database

Geologic Unit: Pitkin

Usage:

Pitkin Limestone (AR*,OK*)


Subunits:

Imo interval (informal) (AR).


Geologic age:

Late Mississippian (Chesterian)*


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

Named from exposures near Pitkin Post Office, Washington Co., Ozark Plateaus, northern AR (Adams and Ulrich, 1904).


AAPG geologic province:

Arkoma basin*
Chautauqua platform*
Ozark uplift*


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 ([ ]).