Usage:
Atoka Formation (AR*,OK*)
(See also Atokan Series.)
Subunits:
(alphabetical): [?] Barnett Hill Member (OK), Blackjack School Sandstone Member (OK*), Coody Sandstone Member (OK*), Dirty Creek Sandstone Member (OK*), Georges Fork Sandstone Member (OK*), Greenland Sandstone Member (AR*), Pope Chapel Sandstone Member (OK*), Trace Creek Member or Trace Creek Shale Member (AR), Webber Falls Sandstone Member (OK*).
Geologic age:
Middle Pennsylvanian (Atokan)*
Type section, locality, area and/or origin of name:
Named from Atoka, Atoka Co., eastern OK, which is situated on outcrop of formation (Taff and Adams, 1900).
AAPG geologic province:
Arkoma basin*
Ouachita folded belt*
Chautauqua platform*
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 ([ ]).