Usage:
Savanna Formation of Krebs Group (OK*)
Savanna Sandstone of Krebs Group (OK*)
Savanna Formation (AR*)
Subunits:
(alphabetical) --all in OK: Dickson Sandstone Member, Doneley Limestone Member, Sam Creek Limestone Member*, Spaniard Limestone Member*, Spiro Sandstone Member.
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Named from Savanna, Pittsburg Co., eastern OK, which is located on the formation (Taff, 1899).
AAPG geologic province:
Arkoma basin*
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 ([ ]).