Breathitt Group (KY)
Breathitt Formation (KY*)
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 (KY*), Kendrick Shale Member, Kilgore Flint Member, Magoffin Member, Naese Sandstone Member (local), Obryan Member, Reynolds Sandstone Member (KY*), Stoney Fork Member, Yellow Creek Sandstone Member (KY*).
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.
GROUP STATUS: Early to Middle Pennsylvanian (Namurian to Westphalian; Morrowan to Desmoinesian)
FORMATION STATUS: Early to Middle Pennsylvanian (Westphalian; Morrowan to Desmoinesian)
Named from exposures in Breathitt Co., KY (Campbell, 1898).
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 ([ ]).