Usage:
Breathitt Group (KY)
Breathitt Formation (KY*)
Subunits:
FORMATION STATUS (alphabetical) --all in KY*: Betsie Shale Member, Cawood sandstone (informal, unranked), Crummies Member, Dwale shale (informal, unranked), Elkins Fork shale (informal, unranked), Frozen Sandstone Member, Jesse Sandstone Member, Kendrick Shale Member, Kilgore Flint Member, Magoffin Member, Naese Sandstone Member, Obryan Member, Reynolds Sandstone Member, Stoney Fork Member, Yellow Creek Sandstone Member.
GROUP STATUS (alphabetical) --all in KY: /Alvy Creek formation (informal), Bee Rock Sandstone, /Bottom Creek formation (informal), Corbin Sandstone, /Four Corners Formation, Grundy Formation, Hyden Formation, Pikeville Formation, Princess Formation, Sewanee Sandstone, Warren Point Sandstone.
Geologic age:
Early to Middle Pennsylvanian*
Type section, locality, area and/or origin of name:
Named from exposures in Breathitt Co., KY (Campbell, 1898).
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 ([ ]).