Usage:
Flint Ridge flint (informal, unranked) in Princess Formation of Breathitt Group (KY)
Flint Ridge flint (informal, unranked) in Breathitt Formation (KY*)
[Possibly same as Kilgore Flint Member of Breathitt Formation (USGS usage), or Kilgore Flint Member of Princess Formation (KY Geol. Survey usage). See also Kilgore.]
Informal and unranked. The lithologic term should not be capitalized.
Geologic age:
Middle Pennsylvanian (Moscovian; Westphalian C; late Atokan)*
Type section, locality, area and/or origin of name:
[Named from] exposures lying 30 feet below top of Flint Ridge at head of Leatherwood Branch of South Quicksand Creek, Troublesome quadrangle, Breathitt Co., eastern KY (Morse, 1931).
AAPG geologic province:
Appalachian 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 ([ ]).