U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Knifely

Usage:

Knifely Sandstone Member of Fort Payne Formation (KY*)


Geologic age:

Middle Mississippian (Visean; Osagean)*


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

Type section: high bluff on north side of Green River Lake opposite Fisher Bend, about 9 mi north of Columbia, Adair Co., KY. Named from Knifely, Adair Co., KY (Kepferle and Lewis, 1974).


AAPG geologic province:

Cincinnati arch*


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 ([ ]).